# MiniWebtool API > Ready-made JSON API for calculators, text utilities, hashes, and finance math. > Hosted formulas, validation, examples, docs, and stable response schemas. > One bearer token, one credit pool, one versioned schema per tool. ## What this API is A collection of small, pure-function HTTP endpoints. Each endpoint takes a JSON input, runs a deterministic computation, returns a JSON output. Low-risk tools are deterministic; random generators explicitly declare non-deterministic behavior. No LLMs or external-service dependencies are exposed in the core catalog. Use this API when an app or AI agent needs exact utility results without rebuilding arithmetic, formatting, hashing, or finance logic. - Docs: https://api.miniwebtool.com/docs.md - OpenAPI 3.1: https://api.miniwebtool.com/v1/openapi.json - MCP endpoint: https://api.miniwebtool.com/mcp - Sitemap: https://api.miniwebtool.com/sitemap.xml - Agent prompt: https://api.miniwebtool.com/prompt.md (integration prompt: search, dry-run, budget rules) - Tool search: https://api.miniwebtool.com/v1/tools?q= (public, no key) - Per-tool: https://api.miniwebtool.com/tools//prompt.md and https://api.miniwebtool.com/tools/.md ## Authentication Bearer token in the Authorization header: Authorization: Bearer mwt_live_... Keys are obtained by signing up at the portal. Free tier available. ## Billing model Every tool has a fixed `credit_weight`. Each successful call deducts that many credits from the organization's monthly pool. Failed calls (validation errors, 5xx) don't bill. ## Core docs - [Overview](https://api.miniwebtool.com/index.md): MiniWebtool API overview and entry points. - [Concepts](https://api.miniwebtool.com/docs.md): Authentication, errors, rate limits, credits, versioning, MCP, and privacy. - [Tool catalog](https://api.miniwebtool.com/tools.md): Searchable catalog of all API tools. - [Full documentation snapshot](https://api.miniwebtool.com/llms-full.txt): Single-file corpus for long-context agents. - [Agent skill](https://api.miniwebtool.com/skill.md): Product-specific operating guidance for agents. ## Tool categories - [Business](https://api.miniwebtool.com/tools/category/business.md): 15 endpoints. - [Color](https://api.miniwebtool.com/tools/category/color.md): 3 endpoints. - [Construction](https://api.miniwebtool.com/tools/category/construction.md): 19 endpoints. - [Conversion](https://api.miniwebtool.com/tools/category/conversion.md): 17 endpoints. - [Converters](https://api.miniwebtool.com/tools/category/converters.md): 1 endpoints. - [Cooking](https://api.miniwebtool.com/tools/category/cooking.md): 12 endpoints. - [Craft](https://api.miniwebtool.com/tools/category/craft.md): 5 endpoints. - [Creator](https://api.miniwebtool.com/tools/category/creator.md): 1 endpoints. - [Datetime](https://api.miniwebtool.com/tools/category/datetime.md): 2 endpoints. - [Dev](https://api.miniwebtool.com/tools/category/dev.md): 14 endpoints. - [Developer](https://api.miniwebtool.com/tools/category/developer.md): 19 endpoints. - [Education](https://api.miniwebtool.com/tools/category/education.md): 6 endpoints. - [Electronics](https://api.miniwebtool.com/tools/category/electronics.md): 7 endpoints. - [Engineering](https://api.miniwebtool.com/tools/category/engineering.md): 3 endpoints. - [Environment](https://api.miniwebtool.com/tools/category/environment.md): 1 endpoints. - [Event](https://api.miniwebtool.com/tools/category/event.md): 1 endpoints. - [Finance](https://api.miniwebtool.com/tools/category/finance.md): 191 endpoints. Exact interest, mortgage, APY, and other money math. - [Fitness](https://api.miniwebtool.com/tools/category/fitness.md): 3 endpoints. - [Food](https://api.miniwebtool.com/tools/category/food.md): 3 endpoints. - [Gaming](https://api.miniwebtool.com/tools/category/gaming.md): 1 endpoints. - [Geometry](https://api.miniwebtool.com/tools/category/geometry.md): 4 endpoints. - [Hash & Checksum](https://api.miniwebtool.com/tools/category/hash.md): 15 endpoints. SHA, MD5, HMAC, and digest utilities with stable JSON output. - [Health](https://api.miniwebtool.com/tools/category/health.md): 26 endpoints. - [Home](https://api.miniwebtool.com/tools/category/home.md): 6 endpoints. - [Lifestyle](https://api.miniwebtool.com/tools/category/lifestyle.md): 18 endpoints. - [Marketing](https://api.miniwebtool.com/tools/category/marketing.md): 12 endpoints. - [Math](https://api.miniwebtool.com/tools/category/math.md): 439 endpoints. Percentage, unit conversion, geometry, and sequences. - [Miscellaneous](https://api.miniwebtool.com/tools/category/miscellaneous.md): 13 endpoints. - [Network](https://api.miniwebtool.com/tools/category/network.md): 3 endpoints. - [Physics](https://api.miniwebtool.com/tools/category/physics.md): 2 endpoints. - [Productivity](https://api.miniwebtool.com/tools/category/productivity.md): 1 endpoints. - [Random](https://api.miniwebtool.com/tools/category/random.md): 14 endpoints. Random generators for apps, tests, and automations. - [Science](https://api.miniwebtool.com/tools/category/science.md): 87 endpoints. - [Sports](https://api.miniwebtool.com/tools/category/sports.md): 15 endpoints. - [Text](https://api.miniwebtool.com/tools/category/text.md): 56 endpoints. Word / character / line counters, whitespace, case, encoding. - [Time](https://api.miniwebtool.com/tools/category/time.md): 5 endpoints. - [Time Date](https://api.miniwebtool.com/tools/category/time-date.md): 21 endpoints. - [Webmaster](https://api.miniwebtool.com/tools/category/webmaster.md): 19 endpoints. DNS, HTTP, meta, robots, and other webmaster utilities. ## Available tools - [Employee Cost Calculator](https://api.miniwebtool.com/tools/employee-cost-calculator.md) (slug: `employee-cost-calculator`, category: Business · Cost Calculators, cost: 1cr) — True employer cost of a hire: salary plus payroll taxes, benefits, PTO, equipment, training, and recruiting. - [EOQ Calculator](https://api.miniwebtool.com/tools/eoq-calculator.md) (slug: `eoq-calculator`, category: Business · Cost Calculators, cost: 1cr) — Economic Order Quantity that minimizes combined ordering and holding cost, with orders/year, cycle length, and reorder point. - [Print Cost Calculator](https://api.miniwebtool.com/tools/print-cost-calculator.md) (slug: `print-cost-calculator`, category: Business · Cost Calculators, cost: 1cr) — Calculate ink, toner, paper, print job, monthly, and yearly printing costs. - [CSAT Score Calculator](https://api.miniwebtool.com/tools/csat-score-calculator.md) (slug: `csat-score-calculator`, category: Business · Customer Experience, cost: 1cr) — Calculate customer satisfaction percentage, average rating and rating distribution from 1–5 response counts. - [Bradford Factor Calculator](https://api.miniwebtool.com/tools/bradford-factor-calculator.md) (slug: `bradford-factor-calculator`, category: Business · Human Resources, cost: 1cr) — Calculate an attendance Bradford Factor from absence spells and total absent days. - [Compa-Ratio Calculator](https://api.miniwebtool.com/tools/compa-ratio-calculator.md) (slug: `compa-ratio-calculator`, category: Business · Human Resources, cost: 1cr) — Compare salary with a pay-range midpoint and calculate range penetration. - [Employee Turnover Rate Calculator](https://api.miniwebtool.com/tools/employee-turnover-rate-calculator.md) (slug: `employee-turnover-rate-calculator`, category: Business · Human Resources, cost: 1cr) — Calculate period and annualized employee turnover from average headcount and separations. - [FTE Calculator](https://api.miniwebtool.com/tools/fte-calculator.md) (slug: `fte-calculator`, category: Business · Human Resources, cost: 1cr) — Convert full-time and part-time headcount and hours into full-time equivalents. - [Billable Utilization Calculator](https://api.miniwebtool.com/tools/billable-utilization-calculator.md) (slug: `billable-utilization-calculator`, category: Business · Operations, cost: 1cr) — Calculate billable utilization, target gap, revenue and gross margin for a work period. - [Revenue Per Employee Calculator](https://api.miniwebtool.com/tools/revenue-per-employee-calculator.md) (slug: `revenue-per-employee-calculator`, category: Business · Productivity, cost: 1cr) — Calculate revenue per employee for a period and annualized basis. - [Contribution Margin Calculator](https://api.miniwebtool.com/tools/contribution-margin-calculator.md) (slug: `contribution-margin-calculator`, category: Business · Profitability, cost: 1cr) — Calculate unit and total contribution margin, ratio, profit, and break-even units. - [MTBF & MTTR Calculator](https://api.miniwebtool.com/tools/mtbf-mttr-calculator.md) (slug: `mtbf-mttr-calculator`, category: Business · Reliability, cost: 1cr) — Calculate MTBF, MTTR, availability and failure rate from operational totals or direct metrics. - [Survey Response Rate Calculator](https://api.miniwebtool.com/tools/survey-response-rate-calculator.md) (slug: `survey-response-rate-calculator`, category: Business · Research, cost: 1cr) — Calculate complete and overall survey response rates, completion rate and approximate margin of error. - [Lemonade Stand Calculator](https://api.miniwebtool.com/tools/lemonade-stand-calculator.md) (slug: `lemonade-stand-calculator`, category: Business · Small Business Calculators, cost: 1cr) — Calculate batch cost, cup cost, break-even cups, and daily lemonade stand profit. - [Follower Growth Rate Calculator](https://api.miniwebtool.com/tools/follower-growth-rate-calculator.md) (slug: `follower-growth-rate-calculator`, category: Business · Social Media, cost: 1cr) — Measure absolute, percentage, compound and annualized follower growth and estimate time to a goal. - [Color Contrast Checker](https://api.miniwebtool.com/tools/color-contrast-checker.md) (slug: `color-contrast-checker`, category: Color · Accessibility, cost: 1cr) — Check WCAG contrast ratio and AA/AAA compliance for two colors. - [Color Code Converter](https://api.miniwebtool.com/tools/color-code-converter-all-formats.md) (slug: `color-code-converter-all-formats`, category: Color · Conversion, cost: 1cr) — Convert HEX, RGB, HSL, HSV, CMYK, and common CSS named colors. - [Color Scheme Generator](https://api.miniwebtool.com/tools/color-scheme-generator.md) (slug: `color-scheme-generator`, category: Color · Palette, cost: 1cr) — Generate complementary, analogous, triadic, square, tetradic, and monochromatic palettes. - [Lumber Calculator](https://api.miniwebtool.com/tools/lumber-calculator.md) (slug: `lumber-calculator`, category: Construction · Construction And Diy Calculators, cost: 1cr) — Calculate board feet, coverage, waste, linear feet, and lumber cost. - [Miter Angle Calculator](https://api.miniwebtool.com/tools/miter-angle-calculator.md) (slug: `miter-angle-calculator`, category: Construction · Layout, cost: 1cr) — Miter and bevel saw angles for flat trim or compound crown-molding cuts, given the corner angle. - [Squareness Checker](https://api.miniwebtool.com/tools/squareness-checker.md) (slug: `squareness-checker`, category: Construction · Layout, cost: 1cr) — Check a corner against the Pythagorean 3-4-5 squareness rule. - [Stair Calculator](https://api.miniwebtool.com/tools/stair-calculator.md) (slug: `stair-calculator`, category: Construction · Layout, cost: 1cr) — Estimate stair risers, treads, run, stringer length, slope, and step profile data. - [Board Foot Calculator](https://api.miniwebtool.com/tools/board-foot-calculator.md) (slug: `board-foot-calculator`, category: Construction · Lumber, cost: 1cr) — Calculate lumber volume in board feet, cubic volume, weight, and optional cost. - [Asphalt Calculator](https://api.miniwebtool.com/tools/asphalt-calculator.md) (slug: `asphalt-calculator`, category: Construction · Materials, cost: 1cr) — Estimate asphalt volume, tonnage, waste buffer, truckloads, and material cost. - [Brick and Mortar Calculator](https://api.miniwebtool.com/tools/brick-and-mortar-calculator.md) (slug: `brick-and-mortar-calculator`, category: Construction · Materials, cost: 1cr) — Brick count and mortar volume/bag estimate for a wall, by brick type, bond thickness, and waste allowance. - [Carpet Calculator](https://api.miniwebtool.com/tools/carpet-calculator.md) (slug: `carpet-calculator`, category: Construction · Materials, cost: 1cr) — Estimate carpet area, waste, roll length, padding, installation, and cost. - [Concrete Calculator](https://api.miniwebtool.com/tools/concrete-calculator.md) (slug: `concrete-calculator`, category: Construction · Materials, cost: 1cr) — Concrete volume in cubic feet/yards/meters plus pre-mix bag counts for slabs, footings, round columns, and staircases. - [Decking Calculator](https://api.miniwebtool.com/tools/decking-calculator.md) (slug: `decking-calculator`, category: Construction · Materials, cost: 1cr) — Estimate decking boards, joists, beams, posts, fasteners, and waste. - [Drywall Calculator](https://api.miniwebtool.com/tools/drywall-calculator.md) (slug: `drywall-calculator`, category: Construction · Materials, cost: 1cr) — Drywall sheets, joint compound, tape, and screws needed for walls and ceilings with a waste allowance. - [Fence Calculator](https://api.miniwebtool.com/tools/fence-calculator.md) (slug: `fence-calculator`, category: Construction · Materials, cost: 1cr) — Fence posts, rails, pickets or panels, concrete, and gate hardware for privacy, picket, post-and-rail, or panel fence styles. - [Paint Calculator](https://api.miniwebtool.com/tools/paint-calculator.md) (slug: `paint-calculator`, category: Construction · Materials, cost: 1cr) — Paint quantity for walls, ceiling, and trim with door/window deductions, texture adjustment, and multi-coat coverage. - [Steel Weight Calculator](https://api.miniwebtool.com/tools/steel-weight-calculator.md) (slug: `steel-weight-calculator`, category: Construction · Materials, cost: 1cr) — Weight of steel and other metal bars, plates, pipes, tubes, and angles from shape dimensions, density, and quantity. - [Tile Calculator](https://api.miniwebtool.com/tools/tile-calculator.md) (slug: `tile-calculator`, category: Construction · Materials, cost: 1cr) — Estimate tile count, boxes, grout, adhesive, sealer, waste, and optional cost. - [Wallpaper Calculator](https://api.miniwebtool.com/tools/wallpaper-calculator.md) (slug: `wallpaper-calculator`, category: Construction · Materials, cost: 1cr) — Estimate wallpaper drops, rolls, waste, coverage, and optional cost. - [Roof Pitch Calculator](https://api.miniwebtool.com/tools/roof-pitch-calculator.md) (slug: `roof-pitch-calculator`, category: Construction · Roofing, cost: 1cr) — Calculate roof pitch, angle, slope percent, and rafter multiplier. - [Beam Load Calculator](https://api.miniwebtool.com/tools/beam-load-calculator.md) (slug: `beam-load-calculator`, category: Construction · Structural, cost: 1cr) — Beam bending moment, shear, stress, and deflection for common support/load cases with strength and serviceability checks. - [Rebar Calculator](https://api.miniwebtool.com/tools/rebar-calculator.md) (slug: `rebar-calculator`, category: Construction · Structural, cost: 1cr) — Rebar bar count, total linear footage, and weight for a concrete slab grid, sizes #3-#10 with cover and waste allowance. - [Square Feet to Square Meters Converter](https://api.miniwebtool.com/tools/square-feet-to-square-meters.md) (slug: `square-feet-to-square-meters`, category: Conversion · Area, cost: 1cr) — Convert square feet and square meters with exact international-foot conversion. - [Quarts to Cups Converter](https://api.miniwebtool.com/tools/quarts-to-cups-converter.md) (slug: `quarts-to-cups-converter`, category: Conversion · Cooking, cost: 1cr) — Convert US customary quarts and cups in either direction. - [Fuel Efficiency Converter](https://api.miniwebtool.com/tools/fuel-efficiency-converter-mpg-l-100km-km-l.md) (slug: `fuel-efficiency-converter-mpg-l-100km-km-l`, category: Conversion · Fuel, cost: 1cr) — Convert MPG, L/100km, km/L, and miles/L fuel-efficiency values. - [Centimeters to Feet and Inches Converter](https://api.miniwebtool.com/tools/cm-to-feet-and-inches-converter.md) (slug: `cm-to-feet-and-inches-converter`, category: Conversion · Length, cost: 1cr) — Convert centimeters to normalized feet and inches, or convert feet and inches to centimeters. - [FPS Converter](https://api.miniwebtool.com/tools/fps-converter.md) (slug: `fps-converter`, category: Conversion · Media, cost: 1cr) — Convert between frame counts, duration and timecode at a given frame rate. - [Pressure Converter](https://api.miniwebtool.com/tools/pressure-converter.md) (slug: `pressure-converter`, category: Conversion · Pressure, cost: 1cr) — Convert pressure among pascals, kilopascals, megapascals, bar, PSI and standard atmospheres. - [PSI to Bar Converter](https://api.miniwebtool.com/tools/psi-to-bar-converter.md) (slug: `psi-to-bar-converter`, category: Conversion · Pressure, cost: 1cr) — Convert pressure between pounds per square inch and bar. - [Scale Model Conversion Calculator](https://api.miniwebtool.com/tools/scale-model-conversion-calculator.md) (slug: `scale-model-conversion-calculator`, category: Conversion · Scale, cost: 1cr) — Convert a length from one model scale to another. - [Shoe Size Converter](https://api.miniwebtool.com/tools/shoe-size-converter.md) (slug: `shoe-size-converter`, category: Conversion · Size, cost: 1cr) — Estimate equivalent shoe sizes across US men's, US women's, UK, EU and centimeter systems. - [Knots to MPH Converter](https://api.miniwebtool.com/tools/knots-to-mph-converter.md) (slug: `knots-to-mph-converter`, category: Conversion · Speed, cost: 1cr) — Convert speed between nautical knots and miles per hour. - [MPH to KMH Converter](https://api.miniwebtool.com/tools/mph-to-kmh-kmh-to-mph.md) (slug: `mph-to-kmh-kmh-to-mph`, category: Conversion · Speed, cost: 1cr) — Convert miles per hour and kilometers per hour in either direction. - [Speed Converter](https://api.miniwebtool.com/tools/speed-converter.md) (slug: `speed-converter`, category: Conversion · Speed, cost: 1cr) — Convert speed among meters per second, kilometers per hour, miles per hour, knots and feet per second. - [Temperature Converter](https://api.miniwebtool.com/tools/temperature-converter.md) (slug: `temperature-converter`, category: Conversion · Temperature, cost: 1cr) — Convert temperatures among Celsius, Fahrenheit and Kelvin. - [Volume Converter](https://api.miniwebtool.com/tools/volume-converter.md) (slug: `volume-converter`, category: Conversion · Unit Converters, cost: 1cr) — Convert volume among metric, US customary, cooking, and cubic units. - [Weight (Mass) Converter](https://api.miniwebtool.com/tools/weight-converter.md) (slug: `weight-converter`, category: Conversion · Unit Converters, cost: 1cr) — Convert mass among metric, imperial, ton, stone, and carat units. - [Cubic Feet to Cubic Yards Converter](https://api.miniwebtool.com/tools/cubic-feet-to-cubic-yards.md) (slug: `cubic-feet-to-cubic-yards`, category: Conversion · Volume, cost: 1cr) — Convert cubic feet and cubic yards and optionally add material waste and order rounding. - [Pounds to Kilograms Converter](https://api.miniwebtool.com/tools/lbs-to-kg-converter.md) (slug: `lbs-to-kg-converter`, category: Conversion · Weight, cost: 1cr) — Convert mass between pounds and kilograms using the international avoirdupois pound. - [Torque Converter](https://api.miniwebtool.com/tools/torque-converter-nm-ft-lb-kgf-cm.md) (slug: `torque-converter-nm-ft-lb-kgf-cm`, category: Converters · Torque, cost: 1cr) — Convert torque between Nm, ft-lb, in-lb, kgf-cm, kgf-m, dyn-cm, oz-in, and oz-ft. - [Baking Pan Size Converter](https://api.miniwebtool.com/tools/baking-pan-size-converter.md) (slug: `baking-pan-size-converter`, category: Cooking · Baking, cost: 1cr) — Scale a recipe when switching between common baking pan sizes. - [Dough Hydration Calculator](https://api.miniwebtool.com/tools/dough-hydration-calculator.md) (slug: `dough-hydration-calculator`, category: Cooking · Baking, cost: 1cr) — Calculate dough hydration, required water, or a simple baker's percentage recipe. - [Sourdough Calculator](https://api.miniwebtool.com/tools/sourdough-calculator.md) (slug: `sourdough-calculator`, category: Cooking · Baking, cost: 1cr) — Calculate sourdough flour, water, starter, salt, and dough weight. - [Coffee Brew Ratio Calculator](https://api.miniwebtool.com/tools/coffee-brew-ratio-calculator.md) (slug: `coffee-brew-ratio-calculator`, category: Cooking · Coffee, cost: 1cr) — Calculate coffee and water amounts for common brewing methods and strengths. - [Cooking Unit Converter](https://api.miniwebtool.com/tools/cooking-unit-converter.md) (slug: `cooking-unit-converter`, category: Cooking · Conversion, cost: 1cr) — Convert cooking volume and weight units using ingredient density. - [Cups to Grams Converter](https://api.miniwebtool.com/tools/cups-to-grams-converter.md) (slug: `cups-to-grams-converter`, category: Cooking · Conversion, cost: 1cr) — Convert cups to grams for common cooking ingredients. - [Yeast Conversion Calculator](https://api.miniwebtool.com/tools/yeast-conversion-calculator.md) (slug: `yeast-conversion-calculator`, category: Cooking · Conversions, cost: 1cr) — Convert fresh, active dry, and instant yeast amounts. - [Brine and Salinity Calculator](https://api.miniwebtool.com/tools/brine-and-salinity-calculator.md) (slug: `brine-and-salinity-calculator`, category: Cooking · Fermentation, cost: 1cr) — Calculate salt, water, or salinity for brines and fermentation recipes. - [Fermentation Time Calculator](https://api.miniwebtool.com/tools/fermentation-time-calculator.md) (slug: `fermentation-time-calculator`, category: Cooking · Fermentation, cost: 1cr) — Estimate fermentation time using a Q10 temperature adjustment model. - [Spaghetti Portion Calculator](https://api.miniwebtool.com/tools/spaghetti-portion-calculator.md) (slug: `spaghetti-portion-calculator`, category: Cooking · Portions, cost: 1cr) — Calculate dry and cooked spaghetti portions for a serving count. - [Baker's Percentage Calculator](https://api.miniwebtool.com/tools/baker-s-percentage-calculator.md) (slug: `baker-s-percentage-calculator`, category: Cooking · Ratios, cost: 1cr) — Scale bread ingredients from flour weight and baker's percentages. - [Recipe Scaler](https://api.miniwebtool.com/tools/recipe-scaler.md) (slug: `recipe-scaler`, category: Cooking · Recipes, cost: 1cr) — Scale ingredient quantities from one serving count to another. - [Knitting Needle Size Converter](https://api.miniwebtool.com/tools/knitting-needle-size-converter.md) (slug: `knitting-needle-size-converter`, category: Craft · Craft Tools, cost: 1cr) — Convert knitting needle sizes among metric, US, UK/Canada, and Japanese systems. - [Origami Paper Size Calculator](https://api.miniwebtool.com/tools/origami-paper-size-calculator.md) (slug: `origami-paper-size-calculator`, category: Craft · Craft Tools, cost: 1cr) — Calculate paper square size from target origami model size and model ratio. - [Pottery Clay Shrinkage Calculator](https://api.miniwebtool.com/tools/pottery-clay-shrinkage-calculator.md) (slug: `pottery-clay-shrinkage-calculator`, category: Craft · Craft Tools, cost: 1cr) — Calculate fired clay dimensions, reverse wet sizing, or measured shrinkage rate. - [Quilt Binding Calculator](https://api.miniwebtool.com/tools/quilt-binding-calculator.md) (slug: `quilt-binding-calculator`, category: Craft · Craft Tools, cost: 1cr) — Calculate quilt binding length, strip count, finished width, and fabric yardage. - [Cross-Stitch Size Calculator](https://api.miniwebtool.com/tools/cross-stitch-size-calculator.md) (slug: `cross-stitch-size-calculator`, category: Craft · Sizing, cost: 1cr) — Calculate finished cross-stitch design and fabric sizes from stitch and fabric counts. - [YouTube Earnings Estimator](https://api.miniwebtool.com/tools/youtube-earnings-estimator.md) (slug: `youtube-earnings-estimator`, category: Creator · Revenue, cost: 1cr) — Estimate YouTube ad revenue from views, CPM range, monetized percentage, and revenue share. - [Autumnal Equinox Day](https://api.miniwebtool.com/tools/autumnal-equinox-day.md) (slug: `autumnal-equinox-day`, category: Datetime · Seasons, cost: 1cr) — Return autumn equinox date, UTC time, seasonal markers, and optional countdown data. - [Decimal to Time Converter](https://api.miniwebtool.com/tools/decimal-to-time-converter.md) (slug: `decimal-to-time-converter`, category: Datetime · Time, cost: 1cr) — Convert decimal hours to hours, minutes, and seconds. - [CMYK to Hex Converter](https://api.miniwebtool.com/tools/cmyk-to-hex-converter.md) (slug: `cmyk-to-hex-converter`, category: Dev · Color, cost: 1cr) — Convert CMYK percentages to RGB, HEX, HSL, HSV, and contrast text color. - [Hex to CMYK Converter](https://api.miniwebtool.com/tools/hex-to-cmyk-converter.md) (slug: `hex-to-cmyk-converter`, category: Dev · Color, cost: 1cr) — Convert a hex color to CMYK print percentages. - [Hex to RGB Converter](https://api.miniwebtool.com/tools/hex-to-rgb-converter.md) (slug: `hex-to-rgb-converter`, category: Dev · Color, cost: 1cr) — Convert a hex color to RGB, HSL, CMYK, and contrast metrics. - [RGB to Hex Converter](https://api.miniwebtool.com/tools/rgb-to-hex-converter.md) (slug: `rgb-to-hex-converter`, category: Dev · Color, cost: 1cr) — Convert RGB channels to hex, HSL, HSV, CMYK, and relative luminance. - [CSV to JSON Converter](https://api.miniwebtool.com/tools/csv-to-json-converter.md) (slug: `csv-to-json-converter`, category: Dev · Data Conversion, cost: 1cr) — Convert CSV text to JSON with delimiter auto-detection and type inference. - [JSON to CSV Converter](https://api.miniwebtool.com/tools/json-to-csv-converter.md) (slug: `json-to-csv-converter`, category: Dev · Data Conversion, cost: 1cr) — Flatten a JSON array into CSV with auto-detected record path, dot or bracket key flattening, configurable delimiter, quoting, and line endings. - [Base64 Decoder](https://api.miniwebtool.com/tools/base64-decoder.md) (slug: `base64-decoder`, category: Dev · Encoding, cost: 1cr) — Decode standard or URL-safe Base64 text and return byte and character analysis. - [Base64 Encoder](https://api.miniwebtool.com/tools/base64-encoder.md) (slug: `base64-encoder`, category: Dev · Encoding, cost: 1cr) — Encode UTF-8 text as standard, URL-safe, or MIME line-wrapped Base64. - [JWT Decoder](https://api.miniwebtool.com/tools/jwt-decoder.md) (slug: `jwt-decoder`, category: Dev · Encoding, cost: 1cr) — Decode a JWT header and payload without verifying the signature, with registered claims and UTC claim times. - [URL Decoder](https://api.miniwebtool.com/tools/url-decoder.md) (slug: `url-decoder`, category: Dev · Encoding, cost: 1cr) — Decode percent-encoded URL text with optional plus-as-space handling and multi-layer detection. - [URL Encoder](https://api.miniwebtool.com/tools/url-encoder.md) (slug: `url-encoder`, category: Dev · Encoding, cost: 1cr) — Percent-encode text for URLs using RFC 3986, query-string, path, or full encoding modes. - [URL Parser](https://api.miniwebtool.com/tools/url-parser.md) (slug: `url-parser`, category: Dev · Encoding, cost: 1cr) — Break a URL into scheme, host, port, path, decoded query parameters, and fragment. - [Cron Job Generator](https://api.miniwebtool.com/tools/cron-job-generator.md) (slug: `cron-job-generator`, category: Dev · Scheduling, cost: 1cr) — Generate a cron expression from common schedule presets. - [Crontab Expression Generator](https://api.miniwebtool.com/tools/crontab-expression-generator.md) (slug: `crontab-expression-generator`, category: Dev · Scheduling, cost: 1cr) — Build and validate a crontab expression from individual fields. - [CSS Grid Generator](https://api.miniwebtool.com/tools/css-grid-generator.md) (slug: `css-grid-generator`, category: Developer · Css, cost: 1cr) — Generate responsive or fixed CSS Grid styles and matching HTML markup. - [Color Inverter](https://api.miniwebtool.com/tools/color-inverter.md) (slug: `color-inverter`, category: Developer · Color, cost: 1cr) — Invert a hex colour and report luminance plus a readable text colour. - [cURL to JSON Converter](https://api.miniwebtool.com/tools/curl-to-json-converter.md) (slug: `curl-to-json-converter`, category: Developer · Data Conversion, cost: 1cr) — Parse a curl command into structured JSON (method, URL parts, headers, cookies, auth, body) and emit equivalent Python, Node.js, PHP, or Go code. - [JSON to YAML Converter](https://api.miniwebtool.com/tools/json-to-yaml-converter.md) (slug: `json-to-yaml-converter`, category: Developer · Data Conversion, cost: 1cr) — Convert a JSON document into block-style YAML, quoting only the scalars that need it. - [XML to JSON Converter](https://api.miniwebtool.com/tools/xml-to-json-converter.md) (slug: `xml-to-json-converter`, category: Developer · Data Conversion, cost: 1cr) — Convert XML into JSON using standard, compact, JsonML, or preserve styles. - [ISO 8601 Date Formatter](https://api.miniwebtool.com/tools/iso-8601-date-formatter.md) (slug: `iso-8601-date-formatter`, category: Developer · Data Formatting, cost: 1cr) — Render one instant as ISO 8601 extended, basic, week and ordinal dates, RFC 2822, HTTP-date, and Unix time. - [JSON Formatter/Validator](https://api.miniwebtool.com/tools/json-formatter-validator.md) (slug: `json-formatter-validator`, category: Developer · Data Formatting, cost: 1cr) — Validate, beautify, minify, or repair JSON with precise error positions, size savings, nesting depth, and element counts. - [JSON Schema Generator](https://api.miniwebtool.com/tools/json-schema-generator.md) (slug: `json-schema-generator`, category: Developer · Data Formatting, cost: 1cr) — Infer a JSON Schema (2020-12, 2019-09, or draft-07) from a sample document, with format detection, enum inference, and required-property control. - [SQL Formatter](https://api.miniwebtool.com/tools/sql-formatter.md) (slug: `sql-formatter`, category: Developer · Data Formatting, cost: 1cr) — Format or minify SQL with keyword casing, breaking clauses and joins onto their own lines. - [YAML Formatter/Validator](https://api.miniwebtool.com/tools/yaml-formatter-validator.md) (slug: `yaml-formatter-validator`, category: Developer · Data Formatting, cost: 1cr) — Validate, format, minify, or convert YAML to JSON. - [UUID Validator/Decoder](https://api.miniwebtool.com/tools/uuid-validator-decoder.md) (slug: `uuid-validator-decoder`, category: Developer · Data Validation, cost: 1cr) — Validate and decode UUIDs: version, variant, field breakdown, v1/v7 timestamps and MAC address, alternate encodings, and v3/v5 namespace verification. - [XML Validator](https://api.miniwebtool.com/tools/xml-validator.md) (slug: `xml-validator`, category: Developer · Data Validation, cost: 1cr) — Validate XML well-formedness and return document statistics. - [Text to Binary/Hex/ASCII Converter](https://api.miniwebtool.com/tools/text-to-binary-hex-ascii-converter.md) (slug: `text-to-binary-hex-ascii-converter`, category: Developer · Encoders, cost: 1cr) — Encode or decode text, binary, hex, and ASCII byte values. - [ASCII Table Reference](https://api.miniwebtool.com/tools/ascii-table-reference.md) (slug: `ascii-table-reference`, category: Developer · General Tools, cost: 1cr) — Full 7-bit ASCII table in decimal, hex, octal, and binary, with single-character lookup. - [cURL Command Builder](https://api.miniwebtool.com/tools/curl-command-builder.md) (slug: `curl-command-builder`, category: Developer · General Tools, cost: 1cr) — Assemble a shell-safe curl command from method, URL, query parameters, headers, body, and auth, in multi-line, one-line, CMD, or PowerShell style. - [HTTP Status Code Reference](https://api.miniwebtool.com/tools/http-status-code-reference.md) (slug: `http-status-code-reference`, category: Developer · General Tools, cost: 1cr) — Look up an HTTP status code or browse the registered codes by class with their defining RFCs. - [Unix Permission Calculator](https://api.miniwebtool.com/tools/unix-permission-calculator.md) (slug: `unix-permission-calculator`, category: Developer · General Tools, cost: 1cr) — Convert Unix permission digits into symbolic permissions and chmod notation. - [Logic Gate Simulator](https://api.miniwebtool.com/tools/logic-gate-simulator.md) (slug: `logic-gate-simulator`, category: Developer · Logic, cost: 1cr) — Evaluate Boolean gate expressions and return a truth table, minterms, classification, and gate counts. - [Text to SQL List Converter](https://api.miniwebtool.com/tools/text-to-sql-list-converter.md) (slug: `text-to-sql-list-converter`, category: Developer · Text Conversion, cost: 1cr) — Convert lines of text into quoted SQL IN-list or tuple syntax. - [Attendance Percentage Calculator](https://api.miniwebtool.com/tools/attendance-percentage-calculator.md) (slug: `attendance-percentage-calculator`, category: Education · Attendance, cost: 1cr) — Calculate attendance percentage, classes needed for a target, and safe skips. - [CGPA to Percentage Converter](https://api.miniwebtool.com/tools/cgpa-to-percentage-converter.md) (slug: `cgpa-to-percentage-converter`, category: Education · Grades, cost: 1cr) — Convert CGPA to percentage using common 10-, 5-, and 4-point formulas. - [GPA Calculator](https://api.miniwebtool.com/tools/gpa-calculator.md) (slug: `gpa-calculator`, category: Education · Grades, cost: 1cr) — Calculate term and cumulative GPA from letter grades and credits. - [Grade Calculator](https://api.miniwebtool.com/tools/grade-calculator.md) (slug: `grade-calculator`, category: Education · Grades, cost: 1cr) — Calculate weighted grades and the score needed on remaining work. - [Learning Curve Calculator](https://api.miniwebtool.com/tools/learning-curve-calculator.md) (slug: `learning-curve-calculator`, category: Education · Student Calculators, cost: 1cr) — Project time per repetition, cumulative practice time, and target repetitions with a power-law learning curve. - [Percentage to CGPA Converter](https://api.miniwebtool.com/tools/percentage-to-cgpa-converter.md) (slug: `percentage-to-cgpa-converter`, category: Education · Student Calculators, cost: 1cr) — Convert percentage to CGPA across common 10-point, 5-point, and 4-point formulas. - [3-Phase Power Calculator](https://api.miniwebtool.com/tools/3-phase-power-calculator.md) (slug: `3-phase-power-calculator`, category: Electronics · Ac Circuits, cost: 1cr) — Calculate balanced three-phase real, apparent, and reactive power. - [Amps to Watts Calculator](https://api.miniwebtool.com/tools/amps-to-watts-calculator.md) (slug: `amps-to-watts-calculator`, category: Electronics · Ac Circuits, cost: 1cr) — Convert current and voltage into real, apparent, and reactive power. - [Inductive Reactance Calculator](https://api.miniwebtool.com/tools/inductive-reactance-calculator.md) (slug: `inductive-reactance-calculator`, category: Electronics · Ac Circuits, cost: 1cr) — Solve XL = 2πfL for inductive reactance, frequency, or inductance. - [Transformer Calculator](https://api.miniwebtool.com/tools/transformer-calculator.md) (slug: `transformer-calculator`, category: Electronics · Circuits, cost: 1cr) — Calculate transformer turns ratio, secondary voltage, current, power, and impedance ratio. - [Voltage Divider Calculator](https://api.miniwebtool.com/tools/voltage-divider-calculator.md) (slug: `voltage-divider-calculator`, category: Electronics · Circuits, cost: 1cr) — Calculate voltage divider output or solve for R1 or R2. - [Battery Life Calculator](https://api.miniwebtool.com/tools/battery-life-calculator.md) (slug: `battery-life-calculator`, category: Electronics · Runtime, cost: 1cr) — Estimate battery runtime from capacity, consumption, and efficiency. - [Voltage Drop Calculator](https://api.miniwebtool.com/tools/voltage-drop-calculator.md) (slug: `voltage-drop-calculator`, category: Electronics · Wiring, cost: 1cr) — Calculate electrical voltage drop for AWG copper or aluminum wire runs. - [Wire Gauge Calculator](https://api.miniwebtool.com/tools/wire-gauge-calculator.md) (slug: `wire-gauge-calculator`, category: Engineering · Electrical, cost: 1cr) — Calculate AWG diameter, area, resistance, ampacity, and optional voltage drop. - [Impedance Calculator](https://api.miniwebtool.com/tools/impedance-calculator.md) (slug: `impedance-calculator`, category: Engineering · Electronics Tools, cost: 1cr) — Calculate series or parallel RLC impedance, phase, resonance, and power factor. - [Hydraulic Cylinder Force Calculator](https://api.miniwebtool.com/tools/hydraulic-cylinder-force-calculator.md) (slug: `hydraulic-cylinder-force-calculator`, category: Engineering · Physics Calculators, cost: 1cr) — Calculate hydraulic cylinder extend and retract force from pressure and diameters. - [Water Usage Calculator](https://api.miniwebtool.com/tools/water-usage-calculator.md) (slug: `water-usage-calculator`, category: Environment · Household, cost: 1cr) — Estimate household daily, monthly, and annual water use by activity. - [Wedding Alcohol Calculator](https://api.miniwebtool.com/tools/wedding-alcohol-calculator.md) (slug: `wedding-alcohol-calculator`, category: Event · Planning, cost: 1cr) — Estimate wine, beer, spirits, and champagne quantities for an event. - [Depreciation Calculator](https://api.miniwebtool.com/tools/depreciation-calculator.md) (slug: `depreciation-calculator`, category: Finance · Accounting, cost: 1cr) — Generate straight-line or declining-balance depreciation schedules with chart-ready book values. - [Car Depreciation Calculator](https://api.miniwebtool.com/tools/car-depreciation-calculator.md) (slug: `car-depreciation-calculator`, category: Finance · Auto, cost: 2cr) — Estimate vehicle depreciation using a declining-balance annual rate. - [Car Lease Calculator](https://api.miniwebtool.com/tools/car-lease-calculator.md) (slug: `car-lease-calculator`, category: Finance · Auto, cost: 2cr) — Estimate monthly auto lease payment from cap cost, residual value, money factor, tax, and fees. - [Tip Calculator](https://api.miniwebtool.com/tools/tip-calculator.md) (slug: `tip-calculator`, category: Finance · Bills, cost: 1cr) — Calculate tip, tax, total bill, split amounts, and chart-ready bill breakdown. - [Bond Convexity Calculator](https://api.miniwebtool.com/tools/bond-convexity-calculator.md) (slug: `bond-convexity-calculator`, category: Finance · Bonds, cost: 2cr) — Calculate bond price, duration, convexity, and a second-order yield-shock estimate. - [Bond Duration Calculator](https://api.miniwebtool.com/tools/bond-duration-calculator-macaulay-modified.md) (slug: `bond-duration-calculator-macaulay-modified`, category: Finance · Bonds, cost: 2cr) — Calculate Macaulay and modified duration, DV01, and exact versus estimated repricing. - [Bond Equivalent Yield Calculator](https://api.miniwebtool.com/tools/bond-equivalent-yield-calculator.md) (slug: `bond-equivalent-yield-calculator`, category: Finance · Bonds, cost: 2cr) — Calculate bond equivalent yield for a discount security. - [Bond Yield to Maturity Calculator](https://api.miniwebtool.com/tools/bond-yield-to-maturity-calculator.md) (slug: `bond-yield-to-maturity-calculator`, category: Finance · Bonds, cost: 2cr) — Calculate bond yield to maturity with current yield and return metrics. - [Treasury Inflation-Protected Securities (TIPS) Calculator](https://api.miniwebtool.com/tools/treasury-inflation-protected-securities-tips-calculator.md) (slug: `treasury-inflation-protected-securities-tips-calculator`, category: Finance · Bonds, cost: 2cr) — Inflation-adjusted principal, growing coupons and the deflation floor for a TIPS holding. - [Zero Coupon Bond Calculator](https://api.miniwebtool.com/tools/zero-coupon-bond-calculator.md) (slug: `zero-coupon-bond-calculator`, category: Finance · Bonds, cost: 2cr) — Calculate zero coupon bond price or yield to maturity. - [Cash Flow Calculator](https://api.miniwebtool.com/tools/cash-flow-calculator.md) (slug: `cash-flow-calculator`, category: Finance · Cash Flow, cost: 1cr) — Calculate net cash flow, ending cash, and optional month-by-month cash balance. - [Debt Service Coverage Ratio Calculator](https://api.miniwebtool.com/tools/debt-service-coverage-ratio-calculator.md) (slug: `debt-service-coverage-ratio-calculator`, category: Finance · Coverage, cost: 1cr) — Calculate DSCR and cash flow after annual debt service. - [Credit Card Interest Calculator](https://api.miniwebtool.com/tools/credit-card-interest-calculator.md) (slug: `credit-card-interest-calculator`, category: Finance · Credit, cost: 2cr) — Estimate credit card payoff time, interest cost, and payment strategy savings. - [Credit Card Payment Calculator](https://api.miniwebtool.com/tools/credit-card-payment-calculator.md) (slug: `credit-card-payment-calculator`, category: Finance · Credit Card Calculators, cost: 1cr) — Calculate the fixed monthly payment needed to pay off a credit card balance over a chosen number of months. - [Credit Card Payoff Calculator](https://api.miniwebtool.com/tools/credit-card-payoff-calculator.md) (slug: `credit-card-payoff-calculator`, category: Finance · Credit Card Calculators, cost: 1cr) — Estimate how long a credit card payoff plan will take and how much interest it costs. - [Credit Utilization Calculator](https://api.miniwebtool.com/tools/credit-utilization-calculator.md) (slug: `credit-utilization-calculator`, category: Finance · Credit Card Calculators, cost: 2cr) — Per-card and overall credit utilization with score-band ratings and pay-down targets to reach 30 and 10 percent. - [Bitcoin Investment Calculator](https://api.miniwebtool.com/tools/bitcoin-investment-calculator.md) (slug: `bitcoin-investment-calculator`, category: Finance · Crypto, cost: 2cr) — Project Bitcoin holdings, target value, profit, ROI, CAGR, and benchmark values. - [Crypto Arbitrage Calculator](https://api.miniwebtool.com/tools/crypto-arbitrage-calculator.md) (slug: `crypto-arbitrage-calculator`, category: Finance · Crypto, cost: 2cr) — Estimate cross-exchange crypto arbitrage profit after trading, withdrawal, and network fees. - [Crypto Leverage Calculator](https://api.miniwebtool.com/tools/crypto-leverage-calculator.md) (slug: `crypto-leverage-calculator`, category: Finance · Crypto, cost: 2cr) — Estimate leveraged crypto position size, liquidation price, P/L, ROI, and price scenarios. - [Crypto Profit/Loss Calculator](https://api.miniwebtool.com/tools/crypto-profit-loss-calculator.md) (slug: `crypto-profit-loss-calculator`, category: Finance · Crypto, cost: 2cr) — Calculate crypto trade profit, ROI, transaction fees, and break-even price. - [Debt Consolidation Calculator](https://api.miniwebtool.com/tools/debt-consolidation-calculator.md) (slug: `debt-consolidation-calculator`, category: Finance · Debt, cost: 2cr) — Estimate a consolidated debt payment and interest cost. - [Debt Coverage Ratio Calculator](https://api.miniwebtool.com/tools/debt-coverage-ratio-calculator.md) (slug: `debt-coverage-ratio-calculator`, category: Finance · Debt, cost: 2cr) — Calculate debt service coverage ratio from NOI and debt service, or build NOI from property inputs. - [Debt to Income Ratio Calculator](https://api.miniwebtool.com/tools/debt-to-income-ratio-calculator.md) (slug: `debt-to-income-ratio-calculator`, category: Finance · Debt, cost: 2cr) — Calculate debt-to-income ratio from monthly income and debt payments. - [Fixed Charge Coverage Ratio Calculator](https://api.miniwebtool.com/tools/fixed-charge-coverage-ratio-calculator.md) (slug: `fixed-charge-coverage-ratio-calculator`, category: Finance · Debt, cost: 2cr) — Calculate fixed charge coverage ratio with optional EBITDA and principal-payment adjustments. - [Interest Coverage Ratio Calculator](https://api.miniwebtool.com/tools/interest-coverage-ratio-calculator.md) (slug: `interest-coverage-ratio-calculator`, category: Finance · Debt, cost: 2cr) — Calculate EBIT or EBITDA based interest coverage ratio. - [Times Interest Earned Ratio Calculator](https://api.miniwebtool.com/tools/times-interest-earned-ratio-calculator.md) (slug: `times-interest-earned-ratio-calculator`, category: Finance · Debt, cost: 2cr) — Calculate times interest earned ratio and interest coverage safety margin. - [Debt Payoff Calculator](https://api.miniwebtool.com/tools/debt-payoff-calculator.md) (slug: `debt-payoff-calculator`, category: Finance · Debt Calculators, cost: 1cr) — Compare debt snowball and avalanche payoff strategies for a small list of debts. - [Actual Cash Value Calculator](https://api.miniwebtool.com/tools/actual-cash-value-calculator.md) (slug: `actual-cash-value-calculator`, category: Finance · Depreciation, cost: 1cr) — Calculate actual cash value from replacement cost, age, lifespan, salvage, and depreciation method. - [Discount Calculator](https://api.miniwebtool.com/tools/discount-calculator.md) (slug: `discount-calculator`, category: Finance · Discounts, cost: 1cr) — Calculate final price, savings, tax, stacked discounts, or BOGO deals. - [Percent Off Calculator](https://api.miniwebtool.com/tools/percent-off-calculator.md) (slug: `percent-off-calculator`, category: Finance · Discounts, cost: 1cr) — Calculate discount amount and sale price from original price and percent off. - [Sale Price Calculator](https://api.miniwebtool.com/tools/sale-price-calculator.md) (slug: `sale-price-calculator`, category: Finance · Discounts, cost: 1cr) — Calculate discounted sale price, tax, final price, and chart-ready price breakdown. - [Amazon FBA Calculator](https://api.miniwebtool.com/tools/amazon-fba-calculator.md) (slug: `amazon-fba-calculator`, category: Finance · Ecommerce, cost: 2cr) — Estimate Amazon referral, fulfillment, and storage fees from category, dimensions, and weight. - [eBay Fee Calculator](https://api.miniwebtool.com/tools/ebay-fee-calculator.md) (slug: `ebay-fee-calculator`, category: Finance · Ecommerce, cost: 2cr) — Estimate eBay final-value, order, promoted, and insertion fees plus net margin and target price. - [Average Collection Period Calculator](https://api.miniwebtool.com/tools/average-collection-period-calculator.md) (slug: `average-collection-period-calculator`, category: Finance · Efficiency, cost: 2cr) — Calculate average collection period, receivables turnover, and industry benchmark spread. - [Debtor Days Calculator](https://api.miniwebtool.com/tools/debtor-days-calculator.md) (slug: `debtor-days-calculator`, category: Finance · Efficiency, cost: 2cr) — Calculate debtor days, receivables ratio, and working capital above a 30-day target. - [Fixed Asset Turnover Calculator](https://api.miniwebtool.com/tools/fixed-asset-turnover-calculator.md) (slug: `fixed-asset-turnover-calculator`, category: Finance · Efficiency, cost: 2cr) — Measure revenue generated per dollar of net fixed assets. - [Inventory Turnover Calculator](https://api.miniwebtool.com/tools/inventory-turnover-calculator.md) (slug: `inventory-turnover-calculator`, category: Finance · Efficiency, cost: 2cr) — Calculate inventory turnover, days sales in inventory, and annualized turnover. - [Inventory Turnover Ratio Calculator](https://api.miniwebtool.com/tools/inventory-turnover-ratio-calculator.md) (slug: `inventory-turnover-ratio-calculator`, category: Finance · Efficiency, cost: 1cr) — Calculate inventory turnover ratio and days inventory outstanding. - [Receivables Turnover Ratio Calculator](https://api.miniwebtool.com/tools/receivables-turnover-ratio-calculator.md) (slug: `receivables-turnover-ratio-calculator`, category: Finance · Efficiency, cost: 2cr) — Calculate receivables turnover and days sales outstanding. - [Total Asset Turnover Calculator](https://api.miniwebtool.com/tools/total-asset-turnover-calculator.md) (slug: `total-asset-turnover-calculator`, category: Finance · Efficiency, cost: 2cr) — Measure revenue generated per dollar of average total assets. - [Pizza Value Calculator](https://api.miniwebtool.com/tools/pizza-value-calculator.md) (slug: `pizza-value-calculator`, category: Finance · Everyday Calculators, cost: 1cr) — Compare two pizzas by area, price per area, slice value, and savings percentage. - [Goodwill to Assets Ratio Calculator](https://api.miniwebtool.com/tools/goodwill-to-assets-ratio-calculator.md) (slug: `goodwill-to-assets-ratio-calculator`, category: Finance · Financial Ratio, cost: 2cr) — Calculate goodwill-to-assets ratio and tangible asset share. - [Retention Ratio Calculator](https://api.miniwebtool.com/tools/retention-ratio-calculator.md) (slug: `retention-ratio-calculator`, category: Finance · Financial Ratio, cost: 2cr) — Calculate retention ratio, payout ratio, and retained earnings. - [Home Affordability Calculator](https://api.miniwebtool.com/tools/home-affordability-calculator.md) (slug: `home-affordability-calculator`, category: Finance · Housing, cost: 2cr) — Maximum home price under the 28/36 rule with the full escrow breakdown and DTI ratios. - [Rent Affordability Calculator](https://api.miniwebtool.com/tools/rent-affordability-calculator.md) (slug: `rent-affordability-calculator`, category: Finance · Housing, cost: 1cr) — Estimate affordable monthly rent from income, debt, utilities, and rent budget percent. - [Rent vs Buy Calculator](https://api.miniwebtool.com/tools/rent-vs-buy-calculator.md) (slug: `rent-vs-buy-calculator`, category: Finance · Housing, cost: 2cr) — Year-by-year wealth comparison of renting and investing versus buying, with the breakeven year. - [APR Calculator](https://api.miniwebtool.com/tools/apr-calculator.md) (slug: `apr-calculator`, category: Finance · Interest, cost: 2cr) — Calculate true APR from loan amount, rolled-in fees, nominal rate, and term. - [APR to APY Calculator](https://api.miniwebtool.com/tools/apr-to-apy-calculator.md) (slug: `apr-to-apy-calculator`, category: Finance · Interest, cost: 2cr) — Convert APR to APY for a selected compounding frequency. - [APY Calculator](https://api.miniwebtool.com/tools/apy-calculator.md) (slug: `apy-calculator`, category: Finance · Interest, cost: 2cr) — Calculate annual percentage yield and compound growth. - [APY to APR Calculator](https://api.miniwebtool.com/tools/apy-to-apr-calculator.md) (slug: `apy-to-apr-calculator`, category: Finance · Interest, cost: 2cr) — Convert APY back to nominal APR for a compounding frequency. - [Compound Daily Interest Calculator](https://api.miniwebtool.com/tools/compound-daily-interest-calculator.md) (slug: `compound-daily-interest-calculator`, category: Finance · Interest, cost: 2cr) — Daily compounding growth of a trading account vs linear gains, with doubling time, milestones, and target days. - [Compound Interest Calculator](https://api.miniwebtool.com/tools/compound-interest-calculator.md) (slug: `compound-interest-calculator`, category: Finance · Interest, cost: 2cr) — Compound-interest formula with selectable compounding frequency. - [Continuous Compounding Calculator](https://api.miniwebtool.com/tools/continuous-compounding-calculator.md) (slug: `continuous-compounding-calculator`, category: Finance · Interest, cost: 1cr) — Calculate future value and interest with continuous compounding. - [Doubling Time Calculator](https://api.miniwebtool.com/tools/doubling-time-calculator.md) (slug: `doubling-time-calculator`, category: Finance · Interest, cost: 1cr) — Calculate exact doubling time, Rule of 72 estimates, or the rate required to double. - [Effective Interest Rate Calculator](https://api.miniwebtool.com/tools/effective-interest-rate-calculator.md) (slug: `effective-interest-rate-calculator`, category: Finance · Interest, cost: 2cr) — Convert a nominal interest rate to its effective annual rate. - [Effective Yield Calculator](https://api.miniwebtool.com/tools/effective-yield-calculator.md) (slug: `effective-yield-calculator`, category: Finance · Interest, cost: 2cr) — Calculate effective annual yield from nominal APR and compounding frequency. - [Forward Rate Calculator](https://api.miniwebtool.com/tools/forward-rate-calculator.md) (slug: `forward-rate-calculator`, category: Finance · Interest, cost: 2cr) — Implied forward rates from a spot curve, as a full matrix plus the consecutive forward curve and shape diagnosis. - [Interest Rate Calculator](https://api.miniwebtool.com/tools/interest-rate-calculator.md) (slug: `interest-rate-calculator`, category: Finance · Interest, cost: 2cr) — Solve the implied annual interest rate from principal, term, and monthly payment. - [Nominal Interest Rate Calculator](https://api.miniwebtool.com/tools/nominal-interest-rate-calculator.md) (slug: `nominal-interest-rate-calculator`, category: Finance · Interest, cost: 2cr) — Convert an effective annual rate to a nominal annual rate. - [Rule of 72 Calculator](https://api.miniwebtool.com/tools/rule-of-72-calculator.md) (slug: `rule-of-72-calculator`, category: Finance · Interest, cost: 1cr) — Estimate investment doubling time with the Rule of 72 and exact compound formula. - [Simple Interest Calculator](https://api.miniwebtool.com/tools/simple-interest-calculator.md) (slug: `simple-interest-calculator`, category: Finance · Interest, cost: 2cr) — Simple-interest formula: I = P * r * t. - [CAPM Calculator](https://api.miniwebtool.com/tools/capm-calculator.md) (slug: `capm-calculator`, category: Finance · Investing, cost: 2cr) — Solve the Capital Asset Pricing Model for expected return, risk-free rate, market return, or beta. - [Dollar Cost Averaging Calculator](https://api.miniwebtool.com/tools/dollar-cost-averaging-calculator.md) (slug: `dollar-cost-averaging-calculator`, category: Finance · Investing, cost: 2cr) — Simulate portfolio growth from regular periodic investments with compounding returns. - [ESPP Calculator](https://api.miniwebtool.com/tools/espp-calculator.md) (slug: `espp-calculator`, category: Finance · Investing, cost: 2cr) — Estimate ESPP shares, lookback discount, sale proceeds, taxes, and after-tax return. - [Holding Period Return Calculator](https://api.miniwebtool.com/tools/holding-period-return-calculator.md) (slug: `holding-period-return-calculator`, category: Finance · Investing, cost: 2cr) — Holding period return with income and capital-gains yield split, return multiple, and optional annualized return. - [IRR Calculator](https://api.miniwebtool.com/tools/irr-calculator.md) (slug: `irr-calculator`, category: Finance · Investing, cost: 2cr) — Internal rate of return solved by bisection for uniform or variable cash flows, with rating and profit summary. - [NPV Calculator](https://api.miniwebtool.com/tools/npv-calculator.md) (slug: `npv-calculator`, category: Finance · Investing, cost: 2cr) — Net present value with IRR, profitability index, payback periods, decision guidance, and rate sensitivity. - [Real Rate of Return Calculator](https://api.miniwebtool.com/tools/real-rate-of-return-calculator.md) (slug: `real-rate-of-return-calculator`, category: Finance · Investing, cost: 2cr) — Inflation-adjusted real return via the Fisher equation, vs the simple approximation, with optional projection. - [Sharpe Ratio Calculator](https://api.miniwebtool.com/tools/sharpe-ratio-calculator.md) (slug: `sharpe-ratio-calculator`, category: Finance · Investing, cost: 2cr) — Sharpe ratio from summary statistics or a series of periodic returns (annualized), with performance rating. - [SIP Calculator](https://api.miniwebtool.com/tools/sip-calculator.md) (slug: `sip-calculator`, category: Finance · Investing, cost: 2cr) — Systematic investment plan projection with optional annual step-up and initial lump sum, month-by-month compounding. - [Stock Average Calculator](https://api.miniwebtool.com/tools/stock-average-calculator.md) (slug: `stock-average-calculator`, category: Finance · Investing, cost: 2cr) — Average cost per share after buying more shares, with breakeven price and optional profit/loss at the current price. - [Stock Profit Loss Calculator](https://api.miniwebtool.com/tools/stock-profit-loss-calculator.md) (slug: `stock-profit-loss-calculator`, category: Finance · Investing, cost: 2cr) — Calculate stock trade profit, loss, ROI, and breakeven price. - [Stock Split Calculator](https://api.miniwebtool.com/tools/stock-split-calculator.md) (slug: `stock-split-calculator`, category: Finance · Investing, cost: 2cr) — Post-split shares, price, cost basis, and fractional-share handling for forward and reverse stock splits. - [Capital Employed Calculator](https://api.miniwebtool.com/tools/capital-employed-calculator.md) (slug: `capital-employed-calculator`, category: Finance · Investment, cost: 2cr) — Calculate capital employed by common balance-sheet methods and optional ROCE. - [WACC Calculator](https://api.miniwebtool.com/tools/wacc-calculator.md) (slug: `wacc-calculator`, category: Finance · Investment, cost: 1cr) — Calculate weighted average cost of capital and component contributions. - [Debt to Asset Ratio Calculator](https://api.miniwebtool.com/tools/debt-to-asset-ratio-calculator.md) (slug: `debt-to-asset-ratio-calculator`, category: Finance · Leverage, cost: 2cr) — Calculate debt-to-asset ratio, equity ratio, and optional industry benchmark spread. - [Debt to Equity Ratio Calculator](https://api.miniwebtool.com/tools/debt-to-equity-ratio-calculator.md) (slug: `debt-to-equity-ratio-calculator`, category: Finance · Leverage, cost: 2cr) — Calculate debt-to-equity ratio, equity multiplier, and capital structure shares. - [Equity Ratio Calculator](https://api.miniwebtool.com/tools/equity-ratio-calculator.md) (slug: `equity-ratio-calculator`, category: Finance · Leverage, cost: 2cr) — Calculate equity ratio, debt ratio, equity multiplier, and industry benchmark spread. - [Cash Ratio Calculator](https://api.miniwebtool.com/tools/cash-ratio-calculator.md) (slug: `cash-ratio-calculator`, category: Finance · Liquidity, cost: 2cr) — Calculate cash ratio from cash, marketable securities, and current liabilities. - [Current Ratio Calculator](https://api.miniwebtool.com/tools/current-ratio-calculator.md) (slug: `current-ratio-calculator`, category: Finance · Liquidity, cost: 2cr) — Calculate current ratio and working capital from current assets and liabilities. - [Loan to Deposit Ratio Calculator](https://api.miniwebtool.com/tools/loan-to-deposit-ratio-calculator.md) (slug: `loan-to-deposit-ratio-calculator`, category: Finance · Liquidity, cost: 2cr) — Calculate bank loan-to-deposit ratio, deposit coverage, and liquidity status. - [Quick Ratio Calculator](https://api.miniwebtool.com/tools/quick-ratio-calculator.md) (slug: `quick-ratio-calculator`, category: Finance · Liquidity, cost: 2cr) — Calculate quick ratio, quick assets, current ratio, and liquidity rating. - [Amortization Calculator](https://api.miniwebtool.com/tools/amortization-calculator.md) (slug: `amortization-calculator`, category: Finance · Loan Calculators, cost: 1cr) — Calculate loan payment, interest, payoff timing, and savings from extra monthly principal. - [HELOC Calculator](https://api.miniwebtool.com/tools/heloc-calculator.md) (slug: `heloc-calculator`, category: Finance · Loan Calculators, cost: 1cr) — Estimate HELOC draw-period and repayment-period payments, interest cost, and combined loan-to-value. - [ARM Mortgage Calculator](https://api.miniwebtool.com/tools/arm-mortgage-calculator.md) (slug: `arm-mortgage-calculator`, category: Finance · Loans, cost: 2cr) — Worst-case payment path of an adjustable-rate mortgage under its initial, periodic, and lifetime caps. - [Auto Loan Calculator](https://api.miniwebtool.com/tools/auto-loan-calculator.md) (slug: `auto-loan-calculator`, category: Finance · Loans, cost: 2cr) — Calculate auto loan amount, monthly payment, tax, and total interest. - [Balloon Loan Calculator](https://api.miniwebtool.com/tools/balloon-loan-calculator.md) (slug: `balloon-loan-calculator`, category: Finance · Loans, cost: 2cr) — Monthly payment and final balloon payment for amortized or interest-only balloon loans. - [Biweekly Mortgage Payment Calculator](https://api.miniwebtool.com/tools/biweekly-mortgage-payment-calculator.md) (slug: `biweekly-mortgage-payment-calculator`, category: Finance · Loans, cost: 2cr) — Biweekly versus monthly mortgage payments with interest saved and time cut from the term. - [Business Loan Calculator](https://api.miniwebtool.com/tools/business-loan-calculator.md) (slug: `business-loan-calculator`, category: Finance · Loans, cost: 2cr) — Estimate business loan payments, fees, payoff time, and interest. - [Car Affordability Calculator](https://api.miniwebtool.com/tools/car-affordability-calculator.md) (slug: `car-affordability-calculator`, category: Finance · Loans, cost: 2cr) — Maximum affordable car price under the 20/4/10 rule with the binding constraint identified. - [Car Loan Payoff Calculator](https://api.miniwebtool.com/tools/car-loan-payoff-calculator.md) (slug: `car-loan-payoff-calculator`, category: Finance · Loans, cost: 2cr) — Compare standard and accelerated payoff for a car loan. - [Down Payment Calculator](https://api.miniwebtool.com/tools/down-payment-calculator.md) (slug: `down-payment-calculator`, category: Finance · Loans, cost: 2cr) — Estimate mortgage down payment, loan amount, monthly payment, PMI, and comparison scenarios. - [EMI Calculator](https://api.miniwebtool.com/tools/emi-calculator.md) (slug: `emi-calculator`, category: Finance · Loans, cost: 2cr) — Calculate equated monthly installment and total interest for a loan. - [FHA Loan Calculator](https://api.miniwebtool.com/tools/fha-loan-calculator.md) (slug: `fha-loan-calculator`, category: Finance · Loans, cost: 2cr) — FHA payment with upfront and annual mortgage insurance premiums from the HUD MIP schedule. - [Interest-Only Mortgage Calculator](https://api.miniwebtool.com/tools/interest-only-mortgage-calculator.md) (slug: `interest-only-mortgage-calculator`, category: Finance · Loans, cost: 2cr) — Interest-only payment, the payment jump when the IO period ends, and the extra interest versus a standard loan. - [Loan Payoff Calculator](https://api.miniwebtool.com/tools/loan-payoff-calculator.md) (slug: `loan-payoff-calculator`, category: Finance · Loans, cost: 2cr) — Calculate loan payoff months and savings from extra monthly payments. - [Mortgage Calculator](https://api.miniwebtool.com/tools/mortgage-calculator.md) (slug: `mortgage-calculator`, category: Finance · Loans, cost: 5cr) — Monthly payment, total interest, LTV, and optional amortization schedule. - [Mortgage Payoff Calculator](https://api.miniwebtool.com/tools/mortgage-payoff-calculator.md) (slug: `mortgage-payoff-calculator`, category: Finance · Loans, cost: 2cr) — Early mortgage payoff simulation with extra monthly, yearly, and one-time payments; time and interest saved. - [Mortgage Recast Calculator](https://api.miniwebtool.com/tools/mortgage-recast-calculator.md) (slug: `mortgage-recast-calculator`, category: Finance · Loans, cost: 2cr) — New payment after a lump-sum recast, versus prepaying without recasting. - [Personal Loan Calculator](https://api.miniwebtool.com/tools/personal-loan-calculator.md) (slug: `personal-loan-calculator`, category: Finance · Loans, cost: 2cr) — Calculate personal loan payment, payoff time, interest, and extra-payment savings. - [VA Loan Calculator](https://api.miniwebtool.com/tools/va-loan-calculator.md) (slug: `va-loan-calculator`, category: Finance · Loans, cost: 2cr) — VA loan payment with the funding fee by use type and down payment, financed or paid at closing. - [ROAS Calculator](https://api.miniwebtool.com/tools/roas-calculator.md) (slug: `roas-calculator`, category: Finance · Marketing, cost: 2cr) — Calculate return on ad spend, profit, ROI, or target revenue. - [Mortgage Comparison Calculator](https://api.miniwebtool.com/tools/mortgage-comparison-calculator.md) (slug: `mortgage-comparison-calculator`, category: Finance · Mortgage, cost: 2cr) — Compare two to four fixed-rate mortgages by payment, total interest, total cost, and annual amortization. - [Black-Scholes Calculator](https://api.miniwebtool.com/tools/black-scholes-calculator.md) (slug: `black-scholes-calculator`, category: Finance · Options, cost: 2cr) — Price European call and put options with dividend-adjusted Black-Scholes and full Greeks. - [Options Profit Calculator](https://api.miniwebtool.com/tools/options-profit-calculator.md) (slug: `options-profit-calculator`, category: Finance · Options, cost: 2cr) — Calculate long call or put break-even, maximum risk, expiration P/L, and payoff curve. - [Time Card Calculator](https://api.miniwebtool.com/tools/time-card-calculator.md) (slug: `time-card-calculator`, category: Finance · Payroll, cost: 1cr) — Calculate regular hours, overtime hours, gross pay, and daily hour chart data. - [Budget Calculator](https://api.miniwebtool.com/tools/budget-calculator.md) (slug: `budget-calculator`, category: Finance · Planning, cost: 2cr) — Allocate income into needs, wants, and savings using the 50/30/20 budgeting rule. - [Cost of Raising a Child Calculator](https://api.miniwebtool.com/tools/cost-of-raising-a-child-calculator.md) (slug: `cost-of-raising-a-child-calculator`, category: Finance · Planning, cost: 2cr) — Project the cost of raising a child to 18 by spending category with income tier, siblings, inflation, and optional college. - [Emergency Fund Calculator](https://api.miniwebtool.com/tools/emergency-fund-calculator.md) (slug: `emergency-fund-calculator`, category: Finance · Planning, cost: 2cr) — Emergency fund target by employment profile and dependents, with 3/6/9/12-month tiers and time to reach each. - [Net Worth Calculator](https://api.miniwebtool.com/tools/net-worth-calculator.md) (slug: `net-worth-calculator`, category: Finance · Planning, cost: 2cr) — Net worth from itemized assets and liabilities with debt-to-asset ratio, health rating, and milestone tracking. - [Break-Even Calculator](https://api.miniwebtool.com/tools/break-even-calculator.md) (slug: `break-even-calculator`, category: Finance · Profit, cost: 1cr) — Calculate break-even units, revenue, contribution margin, and target-profit units. - [EBIT Calculator](https://api.miniwebtool.com/tools/ebit-calculator.md) (slug: `ebit-calculator`, category: Finance · Profit, cost: 2cr) — Calculate EBIT and EBIT margin from revenue, expenses, and non-operating income. - [EBITDA Calculator](https://api.miniwebtool.com/tools/ebitda-calculator.md) (slug: `ebitda-calculator`, category: Finance · Profit, cost: 2cr) — Calculate EBITDA using net income or operating income inputs. - [Break Even Point Calculator](https://api.miniwebtool.com/tools/break-even-point-calculator.md) (slug: `break-even-point-calculator`, category: Finance · Profitability, cost: 1cr) — Calculate break-even units, revenue, costs, and rounded-unit profit. - [Cash Flow Margin Calculator](https://api.miniwebtool.com/tools/cash-flow-margin-calculator.md) (slug: `cash-flow-margin-calculator`, category: Finance · Profitability, cost: 2cr) — Calculate operating cash flow margin as a percentage of net sales. - [Earnings per Share Calculator](https://api.miniwebtool.com/tools/earnings-per-share-calculator.md) (slug: `earnings-per-share-calculator`, category: Finance · Profitability, cost: 2cr) — Calculate basic, diluted, or weighted earnings per share. - [EBIT Margin Calculator](https://api.miniwebtool.com/tools/ebit-margin-calculator.md) (slug: `ebit-margin-calculator`, category: Finance · Profitability, cost: 2cr) — Calculate EBIT margin and EBIT-to-revenue ratio. - [EBITDA Margin Calculator](https://api.miniwebtool.com/tools/ebitda-margin-calculator.md) (slug: `ebitda-margin-calculator`, category: Finance · Profitability, cost: 2cr) — Calculate EBITDA margin from direct EBITDA or component inputs. - [Gross Profit Margin Calculator](https://api.miniwebtool.com/tools/gross-profit-margin-calculator.md) (slug: `gross-profit-margin-calculator`, category: Finance · Profitability, cost: 2cr) — Calculate gross profit, gross margin, markup, and cost ratio. - [Margin Calculator](https://api.miniwebtool.com/tools/margin-calculator.md) (slug: `margin-calculator`, category: Finance · Profitability, cost: 1cr) — Calculate gross profit, margin percent, markup percent, and chart-ready revenue breakdown. - [Net Profit Margin Calculator](https://api.miniwebtool.com/tools/net-profit-margin-calculator.md) (slug: `net-profit-margin-calculator`, category: Finance · Profitability, cost: 2cr) — Calculate net profit margin and profit per revenue dollar. - [Operating Margin Calculator](https://api.miniwebtool.com/tools/operating-margin-calculator.md) (slug: `operating-margin-calculator`, category: Finance · Profitability, cost: 2cr) — Calculate operating margin from operating income or detailed operating components. - [Operating Profit Percentage Calculator](https://api.miniwebtool.com/tools/operating-profit-percentage-calculator.md) (slug: `operating-profit-percentage-calculator`, category: Finance · Profitability, cost: 2cr) — Calculate operating profit percentage from operating income or a revenue cost breakdown. - [Profit Calculator](https://api.miniwebtool.com/tools/profit-calculator.md) (slug: `profit-calculator`, category: Finance · Profitability, cost: 2cr) — Solve profit, margin, markup, revenue, or cost from the known values. - [Profit to Sales Ratio Calculator](https://api.miniwebtool.com/tools/profit-to-sales-ratio-calculator.md) (slug: `profit-to-sales-ratio-calculator`, category: Finance · Profitability, cost: 2cr) — Calculate profit-to-sales ratio and compare it with an industry benchmark. - [Return on Assets Ratio Calculator](https://api.miniwebtool.com/tools/return-on-assets-ratio-calculator.md) (slug: `return-on-assets-ratio-calculator`, category: Finance · Profitability, cost: 2cr) — Calculate ROA with optional DuPont margin and asset-turnover breakdown. - [Return On Equity Calculator](https://api.miniwebtool.com/tools/return-on-equity-calculator.md) (slug: `return-on-equity-calculator`, category: Finance · Profitability, cost: 2cr) — Calculate ROE with optional 3- or 5-component DuPont analysis. - [Return On Sales Calculator](https://api.miniwebtool.com/tools/return-on-sales-calculator.md) (slug: `return-on-sales-calculator`, category: Finance · Profitability, cost: 2cr) — Calculate return on sales, operating cost ratio, and ROS decimal. - [Cap Rate Calculator](https://api.miniwebtool.com/tools/cap-rate-calculator.md) (slug: `cap-rate-calculator`, category: Finance · Real Estate, cost: 1cr) — Calculate net operating income, cap rate, expense ratio, and monthly NOI. - [Capitalization Rate Calculator](https://api.miniwebtool.com/tools/capitalization-rate-calculator.md) (slug: `capitalization-rate-calculator`, category: Finance · Real Estate, cost: 2cr) — Solve cap rate, property value, or required NOI for real estate income analysis. - [Closing Costs Calculator](https://api.miniwebtool.com/tools/closing-costs-calculator.md) (slug: `closing-costs-calculator`, category: Finance · Real Estate, cost: 2cr) — Generic national-average estimate of home purchase or refinance closing costs by fee category. - [Gross Rent Multiplier Calculator](https://api.miniwebtool.com/tools/gross-rent-multiplier-calculator.md) (slug: `gross-rent-multiplier-calculator`, category: Finance · Real Estate, cost: 2cr) — Calculate gross rent multiplier and rental yield for a property. - [Home Equity Calculator](https://api.miniwebtool.com/tools/home-equity-calculator.md) (slug: `home-equity-calculator`, category: Finance · Real Estate, cost: 2cr) — Calculate home equity, LTV, CLTV, and optional five-year equity projection. - [Loan to Cost Calculator](https://api.miniwebtool.com/tools/loan-to-cost-calculator.md) (slug: `loan-to-cost-calculator`, category: Finance · Real Estate, cost: 1cr) — Calculate loan-to-cost percent and equity required for a project. - [Loan to Value Calculator](https://api.miniwebtool.com/tools/loan-to-value-calculator.md) (slug: `loan-to-value-calculator`, category: Finance · Real Estate, cost: 1cr) — Calculate loan-to-value percent, equity, and equity percent for a property. - [Moving Cost Estimator](https://api.miniwebtool.com/tools/moving-cost-estimator.md) (slug: `moving-cost-estimator`, category: Finance · Real Estate, cost: 2cr) — Estimate moving costs from home size, distance, service level, and access factors. - [Prorated Rent Calculator](https://api.miniwebtool.com/tools/prorated-rent-calculator.md) (slug: `prorated-rent-calculator`, category: Finance · Real Estate, cost: 2cr) — Prorate rent for a partial month from a move date, comparing actual-days, banker's 30-day, and annual-basis methods. - [Real Estate Commission Calculator](https://api.miniwebtool.com/tools/real-estate-commission-calculator.md) (slug: `real-estate-commission-calculator`, category: Finance · Real Estate, cost: 2cr) — Calculate total real-estate commission, agent split, rate comparisons, and seller net proceeds. - [BRRRR Method Calculator](https://api.miniwebtool.com/tools/brrrr-method-calculator.md) (slug: `brrrr-method-calculator`, category: Finance · Real Estate Calculators, cost: 1cr) — Analyze a BRRRR real estate deal, including all-in cost, refinance proceeds, capital recycled, equity, and cash flow. - [Cash-on-Cash Return Calculator](https://api.miniwebtool.com/tools/cash-on-cash-return-calculator.md) (slug: `cash-on-cash-return-calculator`, category: Finance · Real Estate Calculators, cost: 1cr) — Estimate rental property cash-on-cash return, cap rate, NOI, cash flow, and DSCR. - [House Flipping Profit Calculator](https://api.miniwebtool.com/tools/house-flipping-profit-calculator.md) (slug: `house-flipping-profit-calculator`, category: Finance · Real Estate Calculators, cost: 1cr) — Estimate house flip net profit, ROI, financing effects, and the 70 percent rule threshold. - [Housing Appreciation Calculator](https://api.miniwebtool.com/tools/housing-appreciation-calculator.md) (slug: `housing-appreciation-calculator`, category: Finance · Real Estate Calculators, cost: 1cr) — Calculate total home value change, annualized appreciation, and a future value projection. - [Markup Calculator](https://api.miniwebtool.com/tools/markup-calculator.md) (slug: `markup-calculator`, category: Finance · Retail, cost: 1cr) — Calculate markup percentage, selling price, cost, profit, and margin. - [401(k) Calculator](https://api.miniwebtool.com/tools/401-k-calculator.md) (slug: `401-k-calculator`, category: Finance · Retirement, cost: 2cr) — Project 401(k) growth to retirement with employer matching, IRS contribution limits, salary raises, and year-by-year balances. - [EPF Calculator](https://api.miniwebtool.com/tools/epf-calculator.md) (slug: `epf-calculator`, category: Finance · Retirement, cost: 2cr) — India Employees Provident Fund maturity corpus, splitting the employer's 12% into EPF and the EPS pension slice, with year-end interest compounding. - [Retirement Calculator](https://api.miniwebtool.com/tools/retirement-calculator.md) (slug: `retirement-calculator`, category: Finance · Retirement, cost: 1cr) — Estimate retirement savings growth, inflation-adjusted value, and contribution breakdown. - [Roth IRA Calculator](https://api.miniwebtool.com/tools/roth-ira-calculator.md) (slug: `roth-ira-calculator`, category: Finance · Retirement, cost: 1cr) — Project Roth IRA growth with contributions, earnings, and chart-ready year-by-year data. - [CAGR Calculator](https://api.miniwebtool.com/tools/cagr-calculator.md) (slug: `cagr-calculator`, category: Finance · Return, cost: 2cr) — Calculate the compound annual growth rate between a beginning and ending value. - [Dividend Payout Ratio Calculator](https://api.miniwebtool.com/tools/dividend-payout-ratio-calculator.md) (slug: `dividend-payout-ratio-calculator`, category: Finance · Return, cost: 2cr) — Calculate dividend payout ratio and retention ratio from total or per-share inputs. - [Dividend Yield Calculator](https://api.miniwebtool.com/tools/dividend-yield-calculator.md) (slug: `dividend-yield-calculator`, category: Finance · Return, cost: 2cr) — Calculate dividend yield, per-payment dividend, and optional annual income. - [ROI Calculator](https://api.miniwebtool.com/tools/roi-calculator.md) (slug: `roi-calculator`, category: Finance · Return, cost: 2cr) — Calculate ROI, annualized ROI, CAGR, and investment term from fixed dates. - [Tax-Equivalent Yield Calculator](https://api.miniwebtool.com/tools/tax-equivalent-yield-calculator.md) (slug: `tax-equivalent-yield-calculator`, category: Finance · Return, cost: 2cr) — Tax-equivalent yield of a municipal bond from federal and state marginal rates, with a bracket table. - [Hourly to Salary Calculator](https://api.miniwebtool.com/tools/hourly-to-salary-calculator.md) (slug: `hourly-to-salary-calculator`, category: Finance · Salary, cost: 2cr) — Convert an hourly wage to weekly, monthly, and annual salary. - [Hourly Wage Calculator](https://api.miniwebtool.com/tools/hourly-wage-calculator.md) (slug: `hourly-wage-calculator`, category: Finance · Salary, cost: 2cr) — Convert annual salary to equivalent hourly wage. - [Salary Conversion Calculator](https://api.miniwebtool.com/tools/salary-conversion-calculator.md) (slug: `salary-conversion-calculator`, category: Finance · Salary, cost: 2cr) — Convert wage amounts across hourly, daily, weekly, monthly, and annual pay periods. - [Salary Raise Calculator](https://api.miniwebtool.com/tools/salary-raise-calculator.md) (slug: `salary-raise-calculator`, category: Finance · Salary, cost: 2cr) — New salary after a raise by percent, target salary, or flat amount, with per-period breakdown and inflation-adjusted real raise. - [Weekly Wage Calculator](https://api.miniwebtool.com/tools/weekly-wage-calculator.md) (slug: `weekly-wage-calculator`, category: Finance · Salary, cost: 2cr) — Convert annual salary to weekly wage. - [Commission Calculator](https://api.miniwebtool.com/tools/commission-calculator.md) (slug: `commission-calculator`, category: Finance · Sales, cost: 2cr) — Calculate flat, tiered, or bonus-based sales commission. - [PayPal Fee Calculator](https://api.miniwebtool.com/tools/paypal-fee-calculator.md) (slug: `paypal-fee-calculator`, category: Finance · Sales, cost: 2cr) — PayPal fee and net for a received payment, or the gross-up invoice amount needed to net a target after fees. - [Compound Savings Calculator](https://api.miniwebtool.com/tools/compound-savings-calculator.md) (slug: `compound-savings-calculator`, category: Finance · Savings, cost: 1cr) — Project savings growth with compound interest and regular contributions. - [Fixed Deposit Calculator](https://api.miniwebtool.com/tools/fixed-deposit-calculator.md) (slug: `fixed-deposit-calculator`, category: Finance · Savings, cost: 2cr) — Fixed deposit maturity value and interest for simple, periodic, or continuous compounding with effective annual rate. - [Recurring Deposit Calculator](https://api.miniwebtool.com/tools/recurring-deposit-calculator.md) (slug: `recurring-deposit-calculator`, category: Finance · Savings, cost: 1cr) — Project recurring monthly deposits with compound interest and chart-ready balance data. - [Savings Calculator](https://api.miniwebtool.com/tools/savings-calculator.md) (slug: `savings-calculator`, category: Finance · Savings, cost: 1cr) — Project savings growth with recurring contributions and chart-ready balance data. - [Burn Rate Calculator](https://api.miniwebtool.com/tools/burn-rate-calculator.md) (slug: `burn-rate-calculator`, category: Finance · Startup, cost: 1cr) — Calculate gross burn, net burn, and estimated runway from cash flow. - [Runway Calculator](https://api.miniwebtool.com/tools/runway-calculator.md) (slug: `runway-calculator`, category: Finance · Startup, cost: 1cr) — Calculate cash runway in months and chart the cash balance decline. - [Future Value Calculator](https://api.miniwebtool.com/tools/future-value-calculator.md) (slug: `future-value-calculator`, category: Finance · Tvm, cost: 2cr) — Calculate future value from a lump sum plus optional recurring contributions. - [Future Value Factor Calculator](https://api.miniwebtool.com/tools/future-value-factor-calculator.md) (slug: `future-value-factor-calculator`, category: Finance · Tvm, cost: 2cr) — Calculate the future value factor for a rate and number of periods. - [Future Value of Annuity Calculator](https://api.miniwebtool.com/tools/future-value-of-annuity-calculator.md) (slug: `future-value-of-annuity-calculator`, category: Finance · Tvm, cost: 2cr) — Calculate future value for ordinary annuities and annuities due. - [Future Value of Annuity Due Calculator](https://api.miniwebtool.com/tools/future-value-of-annuity-due-calculator.md) (slug: `future-value-of-annuity-due-calculator`, category: Finance · Tvm, cost: 2cr) — Calculate future value of an annuity due and compare it with an ordinary annuity. - [Future Value of Growing Annuity Calculator](https://api.miniwebtool.com/tools/future-value-of-growing-annuity-calculator.md) (slug: `future-value-of-growing-annuity-calculator`, category: Finance · Tvm, cost: 2cr) — Calculate future value for payments that grow each period. - [Future Value of Lump Sum Calculator](https://api.miniwebtool.com/tools/future-value-of-lump-sum-calculator.md) (slug: `future-value-of-lump-sum-calculator`, category: Finance · Tvm, cost: 2cr) — Calculate compound future value for a single lump-sum investment. - [FVIFA Calculator](https://api.miniwebtool.com/tools/fvifa-calculator.md) (slug: `fvifa-calculator`, category: Finance · Tvm, cost: 2cr) — Calculate the future value interest factor of an annuity. - [Present Value Annuity Due Calculator](https://api.miniwebtool.com/tools/present-value-annuity-due-calculator.md) (slug: `present-value-annuity-due-calculator`, category: Finance · Tvm, cost: 2cr) — Calculate the present value of an annuity due and compare it with an ordinary annuity. - [Present Value of Annuity Calculator](https://api.miniwebtool.com/tools/present-value-of-annuity-calculator.md) (slug: `present-value-of-annuity-calculator`, category: Finance · Tvm, cost: 2cr) — Calculate present value for ordinary annuities and annuities due. - [Present Value of Lump Sum Calculator](https://api.miniwebtool.com/tools/present-value-of-lump-sum-calculator.md) (slug: `present-value-of-lump-sum-calculator`, category: Finance · Tvm, cost: 2cr) — Discount a future lump sum back to present value. - [PVIF Calculator](https://api.miniwebtool.com/tools/pvif-calculator.md) (slug: `pvif-calculator`, category: Finance · Tvm, cost: 2cr) — Calculate the present value interest factor and discounted future value. - [PVIFA Calculator](https://api.miniwebtool.com/tools/pvifa-calculator.md) (slug: `pvifa-calculator`, category: Finance · Tvm, cost: 2cr) — Calculate the present value interest factor of an annuity and optional present value. - [Estate Tax Calculator](https://api.miniwebtool.com/tools/estate-tax-calculator.md) (slug: `estate-tax-calculator`, category: Finance · Tax, cost: 2cr) — Estimate federal estate tax from gross estate, deductions, gifts, exemption, and graduated brackets. - [Sales Tax Calculator](https://api.miniwebtool.com/tools/sales-tax-calculator.md) (slug: `sales-tax-calculator`, category: Finance · Tax, cost: 1cr) — Calculate sales tax, tax-inclusive totals, pre-tax prices or an implied tax rate. - [VAT Calculator](https://api.miniwebtool.com/tools/vat-calculator.md) (slug: `vat-calculator`, category: Finance · Tax, cost: 2cr) — Add, remove, or extract VAT from an amount using a preset or custom rate. - [Property Tax Calculator](https://api.miniwebtool.com/tools/property-tax-calculator.md) (slug: `property-tax-calculator`, category: Finance · Taxes, cost: 2cr) — Annual and monthly property tax from home value, assessment ratio, tax rate (percent or mills), exemptions, and a 10-year projection. - [Tax Calculator](https://api.miniwebtool.com/tools/tax-calculator.md) (slug: `tax-calculator`, category: Finance · Taxes, cost: 1cr) — Estimate taxable income, tax, take-home income, and effective rate from user-supplied flat rates. - [Discount Factor Calculator](https://api.miniwebtool.com/tools/discount-factor-calculator.md) (slug: `discount-factor-calculator`, category: Finance · Time Value, cost: 2cr) — Discount factor and present value for discrete or continuous compounding with a period-by-period table. - [Present Value Calculator](https://api.miniwebtool.com/tools/present-value-calculator.md) (slug: `present-value-calculator`, category: Finance · Time Value, cost: 1cr) — Discount a future value to present value with configurable compounding and chart-ready series. - [Short Selling Profit Calculator](https://api.miniwebtool.com/tools/short-selling-profit-calculator.md) (slug: `short-selling-profit-calculator`, category: Finance · Trading, cost: 2cr) — Calculate short-sale net profit after borrow fees, margin interest, and commissions. - [Stop Loss Take Profit Calculator](https://api.miniwebtool.com/tools/stop-loss-take-profit-calculator.md) (slug: `stop-loss-take-profit-calculator`, category: Finance · Trading, cost: 2cr) — Calculate stop-loss and take-profit levels, risk/reward, and risk-based position size. - [Fuel Cost Calculator](https://api.miniwebtool.com/tools/fuel-cost-calculator.md) (slug: `fuel-cost-calculator`, category: Finance · Travel, cost: 1cr) — Estimate trip fuel usage, total fuel cost, and per-person cost. - [Book Value per Share Calculator](https://api.miniwebtool.com/tools/book-value-per-share-calculator.md) (slug: `book-value-per-share-calculator`, category: Finance · Valuation, cost: 2cr) — Calculate book value per share, common equity, and optional price-to-book ratio. - [P/E Ratio Calculator](https://api.miniwebtool.com/tools/p-e-ratio-calculator.md) (slug: `p-e-ratio-calculator`, category: Finance · Valuation, cost: 2cr) — Calculate price-to-earnings ratio, earnings yield, and sector benchmark premium. - [Price to Book Ratio Calculator](https://api.miniwebtool.com/tools/price-to-book-ratio-calculator.md) (slug: `price-to-book-ratio-calculator`, category: Finance · Valuation, cost: 2cr) — Calculate price-to-book ratio and compare it to industry benchmark ranges. - [Cost Per Mile Calculator](https://api.miniwebtool.com/tools/cost-per-mile-calculator.md) (slug: `cost-per-mile-calculator`, category: Finance · Vehicle Costs, cost: 1cr) — Estimate total annual driving cost and the true cost per mile from fuel and ownership costs. - [Running Pace Calculator](https://api.miniwebtool.com/tools/running-pace-calculator.md) (slug: `running-pace-calculator`, category: Fitness · Pace, cost: 1cr) — Calculate running pace per kilometer and mile plus speed. - [Swimming Pace Calculator](https://api.miniwebtool.com/tools/swimming-pace-calculator.md) (slug: `swimming-pace-calculator`, category: Fitness · Sports Calculators, cost: 1cr) — Calculate swim pace per 100m/100yd, speed, lap splits, race estimates, and pace zone. - [Vertical Jump Calculator](https://api.miniwebtool.com/tools/vertical-jump-calculator.md) (slug: `vertical-jump-calculator`, category: Fitness · Sports Calculators, cost: 1cr) — Calculate vertical jump height, rating, percentile estimate, and optional power estimates. - [Coffee Ratio by Cups Calculator](https://api.miniwebtool.com/tools/coffee-ratio-by-cups-calculator.md) (slug: `coffee-ratio-by-cups-calculator`, category: Food · Coffee, cost: 1cr) — Calculate coffee and water amounts by cup count using standard, strong, light or custom brew ratios. - [Pizza Party Planner](https://api.miniwebtool.com/tools/pizza-party-planner.md) (slug: `pizza-party-planner`, category: Food · Planning Calculators, cost: 1cr) — Estimate pizzas, slices, vegetarian split, leftovers, and optional cost for a group. - [Taco Bar Calculator](https://api.miniwebtool.com/tools/taco-bar-calculator.md) (slug: `taco-bar-calculator`, category: Food · Planning Calculators, cost: 1cr) — Estimate taco bar shells, protein, toppings, sides, and extras for a group. - [Game Sensitivity Converter](https://api.miniwebtool.com/tools/game-sensitivity-converter.md) (slug: `game-sensitivity-converter`, category: Gaming · Mouse Sensitivity, cost: 1cr) — Convert FPS mouse sensitivity using cm per 360 degrees. - [Surface Area Calculator](https://api.miniwebtool.com/tools/surface-area-calculator.md) (slug: `surface-area-calculator`, category: Geometry · Surface Area, cost: 1cr) — Calculate the surface area of spheres, cylinders, cuboids and cones. - [Surface Area of a Sphere Calculator](https://api.miniwebtool.com/tools/surface-area-of-sphere-calculator.md) (slug: `surface-area-of-sphere-calculator`, category: Geometry · Surface Area, cost: 1cr) — Calculate the surface area, volume and diameter of a sphere from its radius. - [Volume Calculator](https://api.miniwebtool.com/tools/volume-calculator.md) (slug: `volume-calculator`, category: Geometry · Volume, cost: 1cr) — Calculate the volume of spheres, cylinders, cuboids, cones and rectangular pyramids. - [Volume of a Sphere Calculator](https://api.miniwebtool.com/tools/volume-of-sphere-calculator.md) (slug: `volume-of-sphere-calculator`, category: Geometry · Volume, cost: 1cr) — Calculate the volume, surface area and diameter of a sphere from its radius. - [Adler-32 Checksum Calculator](https://api.miniwebtool.com/tools/adler32-checksum-calculator.md) (slug: `adler32-checksum-calculator`, category: Hash · Checksum, cost: 1cr) — Calculate the Adler-32 checksum of UTF-8 text with A and B component breakdown. - [CRC32 Checksum Calculator](https://api.miniwebtool.com/tools/crc32-checksum-calculator.md) (slug: `crc32-checksum-calculator`, category: Hash · Checksum, cost: 1cr) — Calculate the IEEE CRC32 checksum of text in hex, decimal, and binary form. - [CRC64 Checksum Calculator](https://api.miniwebtool.com/tools/crc64-checksum-calculator.md) (slug: `crc64-checksum-calculator`, category: Hash · Checksum, cost: 1cr) — Calculate the CRC64 checksum of text using ECMA-182, WE, or Jones polynomial variants. - [FNV-1a Hash Generator](https://api.miniwebtool.com/tools/fnv1a-hash-generator.md) (slug: `fnv1a-hash-generator`, category: Hash · Checksum, cost: 1cr) — Generate a fast non-cryptographic FNV-1a hash in 32, 64, 128, or 256-bit variants. - [MurmurHash3 Generator](https://api.miniwebtool.com/tools/murmurhash3-generator.md) (slug: `murmurhash3-generator`, category: Hash · Checksum, cost: 1cr) — 32-bit MurmurHash3 (x86) of the input text, in decimal, hex, and binary, with a configurable seed. - [BLAKE2b Hash Generator](https://api.miniwebtool.com/tools/blake2b-hash-generator.md) (slug: `blake2b-hash-generator`, category: Hash · Digest, cost: 1cr) — Generate a BLAKE2b digest with 256, 384, or 512-bit output. - [MD5 Hash Generator](https://api.miniwebtool.com/tools/md5-hash-generator.md) (slug: `md5-hash-generator`, category: Hash · Digest, cost: 1cr) — Generate an MD5 hex digest for checksum and legacy compatibility. - [SHA1 Hash Generator](https://api.miniwebtool.com/tools/sha1-hash-generator.md) (slug: `sha1-hash-generator`, category: Hash · Digest, cost: 1cr) — Generate the SHA-1 hash (160-bit) of text. - [SHA-224 Hash Generator](https://api.miniwebtool.com/tools/sha224-hash-generator.md) (slug: `sha224-hash-generator`, category: Hash · Digest, cost: 1cr) — Generate the SHA-224 hash (224-bit) of text. - [SHA-256 Hash Generator](https://api.miniwebtool.com/tools/sha256-hash-generator.md) (slug: `sha256-hash-generator`, category: Hash · Digest, cost: 1cr) — Generate a SHA-256 hex digest of a UTF-8 string. - [SHA3-256 Hash Generator](https://api.miniwebtool.com/tools/sha3-256-hash-generator.md) (slug: `sha3-256-hash-generator`, category: Hash · Digest, cost: 1cr) — Generate the SHA3-256 hash (256-bit Keccak) of text. - [SHA3-384 Hash Generator](https://api.miniwebtool.com/tools/sha3-384-hash-generator.md) (slug: `sha3-384-hash-generator`, category: Hash · Digest, cost: 1cr) — Generate the SHA3-384 hash (384-bit Keccak) of text. - [SHA3-512 Hash Generator](https://api.miniwebtool.com/tools/sha3-512-hash-generator.md) (slug: `sha3-512-hash-generator`, category: Hash · Digest, cost: 1cr) — Generate a SHA3-512 hex digest of a UTF-8 string. - [SHA-384 Hash Generator](https://api.miniwebtool.com/tools/sha384-hash-generator.md) (slug: `sha384-hash-generator`, category: Hash · Digest, cost: 1cr) — Generate a SHA-384 hex digest of a UTF-8 string. - [SHA-512 Hash Generator](https://api.miniwebtool.com/tools/sha512-hash-generator.md) (slug: `sha512-hash-generator`, category: Hash · Digest, cost: 1cr) — Generate a SHA-512 hex digest of a UTF-8 string. - [BMI Calculator](https://api.miniwebtool.com/tools/bmi-calculator.md) (slug: `bmi-calculator`, category: Health · Body Metrics, cost: 1cr) — Calculate Body Mass Index, BMI Prime, and healthy weight range in metric or imperial units. - [Body Fat Percentage Calculator](https://api.miniwebtool.com/tools/body-fat-percentage-calculator.md) (slug: `body-fat-percentage-calculator`, category: Health · Body Metrics, cost: 1cr) — Estimate body fat percentage with the US Navy method and age-adjusted healthy ranges. - [Body Surface Area Calculator](https://api.miniwebtool.com/tools/body-surface-area-calculator.md) (slug: `body-surface-area-calculator`, category: Health · Body Metrics, cost: 1cr) — Estimate body surface area using Mosteller, Du Bois, or Haycock formulas. - [Child Height Predictor](https://api.miniwebtool.com/tools/child-height-predictor.md) (slug: `child-height-predictor`, category: Health · Body Metrics, cost: 1cr) — Predicted adult height from parents' heights via the mid-parental (Tanner) method with range and adult percentile. - [Ideal Weight Calculator](https://api.miniwebtool.com/tools/ideal-weight-calculator.md) (slug: `ideal-weight-calculator`, category: Health · Body Metrics, cost: 1cr) — Ideal body weight via Devine, Robinson, Miller, and Hamwi formulas with frame-size adjustment and healthy BMI range. - [Lean Body Mass Calculator](https://api.miniwebtool.com/tools/lean-body-mass-calculator.md) (slug: `lean-body-mass-calculator`, category: Health · Body Metrics, cost: 1cr) — Lean body mass via Boer, James, and Hume equations with estimated body fat percentage and category. - [Waist to Hip Ratio Calculator](https://api.miniwebtool.com/tools/waist-to-hip-ratio-calculator.md) (slug: `waist-to-hip-ratio-calculator`, category: Health · Body Metrics, cost: 1cr) — Waist-to-hip ratio with WHO risk category, body shape pattern, and the waist target for a healthy ratio. - [Blood Sugar Converter](https://api.miniwebtool.com/tools/blood-sugar-converter.md) (slug: `blood-sugar-converter`, category: Health · Diabetes, cost: 1cr) — Convert blood glucose between mg/dL and mmol/L with fasting-range category and reference table. - [HbA1c Calculator](https://api.miniwebtool.com/tools/hba1c-calculator.md) (slug: `hba1c-calculator`, category: Health · Diabetes, cost: 1cr) — Convert between HbA1c percentage and estimated average glucose (mg/dL and mmol/L) with ADA interpretation. - [Heart Rate Zone Calculator](https://api.miniwebtool.com/tools/heart-rate-zone-calculator.md) (slug: `heart-rate-zone-calculator`, category: Health · Fitness, cost: 1cr) — Estimate heart-rate training zones using max-heart-rate or Karvonen formulas. - [Max Heart Rate Calculator](https://api.miniwebtool.com/tools/max-heart-rate-calculator.md) (slug: `max-heart-rate-calculator`, category: Health · Fitness, cost: 1cr) — Maximum heart rate from six validated formulas (Fox, Tanaka, Gellish, Gulati, Nes, Arena) with training zones. - [One Rep Max (1RM) Calculator](https://api.miniwebtool.com/tools/one-rep-max-calculator.md) (slug: `one-rep-max-calculator`, category: Health · Fitness, cost: 1cr) — One-rep max estimated by seven formulas (Brzycki, Epley, Lander, Lombardi, Mayhew, O'Conner, Wathan) with training zones and warm-up sets. - [Steps to Distance Calculator](https://api.miniwebtool.com/tools/steps-to-distance-calculator.md) (slug: `steps-to-distance-calculator`, category: Health · Fitness, cost: 1cr) — Estimate distance walked or run from a step count and height. - [Water Intake Calculator](https://api.miniwebtool.com/tools/water-intake-calculator.md) (slug: `water-intake-calculator`, category: Health · Hydration, cost: 1cr) — Estimate daily water intake from body weight, activity, and hot-weather adjustment. - [Creatinine Clearance Calculator](https://api.miniwebtool.com/tools/creatinine-clearance-calculator.md) (slug: `creatinine-clearance-calculator`, category: Health · Kidney Function, cost: 1cr) — Estimate creatinine clearance with the Cockcroft-Gault equation and CKD stage. - [FENa Calculator](https://api.miniwebtool.com/tools/fena-calculator.md) (slug: `fena-calculator`, category: Health · Kidney Function, cost: 1cr) — Fractional excretion of sodium (FENa) with prerenal / indeterminate / intrinsic-renal interpretation. - [GFR Calculator](https://api.miniwebtool.com/tools/gfr-calculator.md) (slug: `gfr-calculator`, category: Health · Kidney Function, cost: 1cr) — Estimated GFR via CKD-EPI 2021 (primary), CKD-EPI 2009, MDRD, and Cockcroft-Gault with CKD staging. - [ANC Calculator](https://api.miniwebtool.com/tools/anc-calculator.md) (slug: `anc-calculator`, category: Health · Lab Values, cost: 1cr) — Absolute neutrophil count from CBC values with NCI CTCAE neutropenia grading. - [BUN to Creatinine Ratio Calculator](https://api.miniwebtool.com/tools/bun-to-creatinine-ratio-calculator.md) (slug: `bun-to-creatinine-ratio-calculator`, category: Health · Lab Values, cost: 1cr) — Calculate the BUN to creatinine ratio with unit conversion and reference range. - [Corrected Calcium Calculator](https://api.miniwebtool.com/tools/corrected-calcium-calculator.md) (slug: `corrected-calcium-calculator`, category: Health · Lab Values, cost: 1cr) — Albumin-corrected calcium (Payne 0.8 or modified 0.6 coefficient) with clinical interpretation. - [Corrected Sodium Calculator](https://api.miniwebtool.com/tools/corrected-sodium-calculator.md) (slug: `corrected-sodium-calculator`, category: Health · Lab Values, cost: 1cr) — Hyperglycemia-corrected sodium via Katz and Hillier formulas with severity interpretation. - [Caffeine Limit Calculator](https://api.miniwebtool.com/tools/caffeine-overdose-calculator.md) (slug: `caffeine-overdose-calculator`, category: Health · Nutrition, cost: 1cr) — Estimate a safe daily caffeine limit and what it equals in drinks. - [Calorie Deficit Calculator](https://api.miniwebtool.com/tools/calorie-deficit-calculator.md) (slug: `calorie-deficit-calculator`, category: Health · Nutrition, cost: 1cr) — Estimate daily calorie deficit, target intake, and projected weight-loss trend. - [Protein Intake Calculator](https://api.miniwebtool.com/tools/protein-intake-calculator.md) (slug: `protein-intake-calculator`, category: Health · Nutrition, cost: 1cr) — Estimate daily protein intake and per-meal targets from weight and training goal. - [Due Date Calculator](https://api.miniwebtool.com/tools/due-date-calculator.md) (slug: `due-date-calculator`, category: Health · Pregnancy, cost: 1cr) — Pregnancy due date via Naegele's rule from LMP, conception date, or ultrasound, with trimester milestones. - [Gestational Age Calculator](https://api.miniwebtool.com/tools/gestational-age-calculator.md) (slug: `gestational-age-calculator`, category: Health · Pregnancy, cost: 1cr) — Work out gestational age in weeks and days plus the estimated due date. - [Appliance Energy Cost Calculator](https://api.miniwebtool.com/tools/appliance-energy-cost-calculator.md) (slug: `appliance-energy-cost-calculator`, category: Home · Energy Calculators, cost: 1cr) — Daily, monthly, and annual electricity cost for an appliance from wattage, usage hours, and rate. - [Light Bulb Savings Calculator](https://api.miniwebtool.com/tools/light-bulb-savings-calculator.md) (slug: `light-bulb-savings-calculator`, category: Home · Energy Calculators, cost: 1cr) — Compare bulb energy, replacement cost, total savings, and payback period. - [Mulch, Soil & Gravel Calculator](https://api.miniwebtool.com/tools/mulch-soil-gravel-calculator.md) (slug: `mulch-soil-gravel-calculator`, category: Home · Garden Calculators, cost: 1cr) — Volume, weight, bag count, and truck-load estimate for mulch, topsoil, gravel, or sand over a rectangular area. - [Plant Spacing Calculator](https://api.miniwebtool.com/tools/plant-spacing-calculator.md) (slug: `plant-spacing-calculator`, category: Home · Garden Calculators, cost: 1cr) — Estimate plant counts for square and triangular garden spacing layouts. - [Gas vs Electric Cost Comparison](https://api.miniwebtool.com/tools/gas-vs-electric-cost-comparison.md) (slug: `gas-vs-electric-cost-comparison`, category: Home · Utilities, cost: 1cr) — Compare gas and electric annual running costs and CO2 estimates. - [Shower Cost Calculator](https://api.miniwebtool.com/tools/shower-cost-calculator.md) (slug: `shower-cost-calculator`, category: Home · Utilities, cost: 1cr) — Estimate water use, energy use, and cost for showers. - [What Is My Zodiac Sign](https://api.miniwebtool.com/tools/what-is-my-zodiac-sign.md) (slug: `what-is-my-zodiac-sign`, category: Lifestyle · Astrology, cost: 1cr) — Return the western zodiac sign, element and modality for a birth date. - [Beading Pattern Calculator](https://api.miniwebtool.com/tools/beading-pattern-calculator.md) (slug: `beading-pattern-calculator`, category: Lifestyle · Crafts, cost: 1cr) — Calculate beads needed from strand length and a repeating bead pattern. - [Yarn Calculator](https://api.miniwebtool.com/tools/yarn-calculator.md) (slug: `yarn-calculator`, category: Lifestyle · Crafts, cost: 1cr) — Estimate yarn yards, meters, grams, and skeins for common knitting/crochet projects. - [Bench Press Calculator](https://api.miniwebtool.com/tools/bench-press-calculator.md) (slug: `bench-press-calculator`, category: Lifestyle · Fitness, cost: 1cr) — Estimate bench press one-rep max, formula comparisons, and training zones. - [BMR Calculator](https://api.miniwebtool.com/tools/bmr-calculator.md) (slug: `bmr-calculator`, category: Lifestyle · Fitness, cost: 1cr) — Calculate BMR, RMR estimate, TDEE, macro estimates, and activity-level calorie needs. - [Love Compatibility Calculator](https://api.miniwebtool.com/tools/love-compatibility-calculator.md) (slug: `love-compatibility-calculator`, category: Lifestyle · Fun, cost: 1cr) — Deterministic name-based compatibility score, for entertainment. - [BAC Calculator](https://api.miniwebtool.com/tools/bac-calculator.md) (slug: `bac-calculator`, category: Lifestyle · Health, cost: 1cr) — Estimate blood alcohol content using standard-drink counts and the Widmark formula. - [Biological Age Calculator](https://api.miniwebtool.com/tools/biological-age-calculator.md) (slug: `biological-age-calculator`, category: Lifestyle · Health, cost: 1cr) — Estimate biological age from lifestyle and health-factor adjustments. - [Dishwasher Load Optimizer](https://api.miniwebtool.com/tools/dishwasher-load-optimizer.md) (slug: `dishwasher-load-optimizer`, category: Lifestyle · Home, cost: 1cr) — Estimate dishwasher rack utilization, cycles needed, and item placement. - [Angel Number Calculator](https://api.miniwebtool.com/tools/angel-number-calculator.md) (slug: `angel-number-calculator`, category: Lifestyle · Numerology, cost: 1cr) — Find recurring angel-number interpretations or derive one from a birth date. - [Numerology Calculator](https://api.miniwebtool.com/tools/numerology-calculator.md) (slug: `numerology-calculator`, category: Lifestyle · Numerology, cost: 1cr) — Life path, expression and soul urge numbers from a birth date and name. - [What Is My Lucky Number](https://api.miniwebtool.com/tools/what-is-my-lucky-number.md) (slug: `what-is-my-lucky-number`, category: Lifestyle · Numerology, cost: 1cr) — Derive a lucky number deterministically from a birth date. - [Aquarium Heater Wattage Calculator](https://api.miniwebtool.com/tools/aquarium-heater-wattage-calculator.md) (slug: `aquarium-heater-wattage-calculator`, category: Lifestyle · Pets, cost: 1cr) — Estimate aquarium heater wattage from tank size and temperature gap. - [Bird Cage Size Calculator](https://api.miniwebtool.com/tools/bird-cage-size-calculator.md) (slug: `bird-cage-size-calculator`, category: Lifestyle · Pets, cost: 1cr) — Recommend minimum bird cage dimensions and bar spacing by species. - [Cat Litter Box Calculator](https://api.miniwebtool.com/tools/cat-litter-box-calculator.md) (slug: `cat-litter-box-calculator`, category: Lifestyle · Pets, cost: 1cr) — Estimate recommended cat litter boxes, placement, and monthly litter use. - [Cat Years Calculator](https://api.miniwebtool.com/tools/cat-years-calculator.md) (slug: `cat-years-calculator`, category: Lifestyle · Pets, cost: 1cr) — Convert cat age into human-equivalent years and life stage. - [Dog Years Calculator](https://api.miniwebtool.com/tools/dog-years-calculator.md) (slug: `dog-years-calculator`, category: Lifestyle · Pets, cost: 1cr) — Convert dog age to human-equivalent years by breed size. - [Clothing Size Converter](https://api.miniwebtool.com/tools/clothing-size-converter.md) (slug: `clothing-size-converter`, category: Lifestyle · Size Conversion, cost: 1cr) — Convert clothing sizes between alpha, US, UK, EU, JP, KR, and measurements. - [CTR Calculator](https://api.miniwebtool.com/tools/ctr-calculator.md) (slug: `ctr-calculator`, category: Marketing · Advertising, cost: 1cr) — Calculate click-through rate, required clicks for a target CTR, or bulk campaign CTR. - [Email Open Rate Calculator](https://api.miniwebtool.com/tools/email-open-rate-calculator.md) (slug: `email-open-rate-calculator`, category: Marketing · Email, cost: 1cr) — Calculate email delivery rate and open rate from campaign counts. - [Unsubscribe Rate Calculator](https://api.miniwebtool.com/tools/unsubscribe-rate-calculator.md) (slug: `unsubscribe-rate-calculator`, category: Marketing · Email, cost: 1cr) — Calculate campaign unsubscribe rate and subscriber-list loss rate. - [Conversion Rate Calculator](https://api.miniwebtool.com/tools/conversion-rate-calculator.md) (slug: `conversion-rate-calculator`, category: Marketing · Funnels, cost: 1cr) — Calculate conversion rate from visitors and conversions. - [Social Media ROI Calculator](https://api.miniwebtool.com/tools/social-media-roi-calculator.md) (slug: `social-media-roi-calculator`, category: Marketing · Roi, cost: 2cr) — Calculate social media campaign ROI, ROAS, conversion rate, and unit costs. - [Churn Rate Calculator](https://api.miniwebtool.com/tools/churn-rate-calculator.md) (slug: `churn-rate-calculator`, category: Marketing · Retention, cost: 1cr) — Calculate churn, retention, ending customers, and net customer growth. - [ARPU Calculator](https://api.miniwebtool.com/tools/arpu-calculator.md) (slug: `arpu-calculator`, category: Marketing · Saas Metrics, cost: 1cr) — Calculate ARPU for a period plus monthly and annualized ARPU. - [Net Promoter Score Calculator](https://api.miniwebtool.com/tools/net-promoter-score-calculator.md) (slug: `net-promoter-score-calculator`, category: Marketing · Surveys, cost: 1cr) — Calculate NPS from promoter, passive, and detractor counts. - [Cost Per Lead Calculator](https://api.miniwebtool.com/tools/cost-per-lead-calculator.md) (slug: `cost-per-lead-calculator`, category: Marketing · Unit Costs, cost: 1cr) — Calculate cost per lead and optional funnel metrics. - [Customer Acquisition Cost Calculator](https://api.miniwebtool.com/tools/customer-acquisition-cost-calculator.md) (slug: `customer-acquisition-cost-calculator`, category: Marketing · Unit Economics, cost: 1cr) — Calculate CAC from marketing spend, sales spend, and new customers. - [Customer Lifetime Value Calculator](https://api.miniwebtool.com/tools/customer-lifetime-value-calculator.md) (slug: `customer-lifetime-value-calculator`, category: Marketing · Unit Economics, cost: 1cr) — Estimate LTV from order value, purchase frequency, gross margin, and lifespan. - [Customer Lifetime Value (CLV) Calculator](https://api.miniwebtool.com/tools/customer-lifetime-value-clv-calculator.md) (slug: `customer-lifetime-value-clv-calculator`, category: Marketing · Unit Economics, cost: 1cr) — Customer lifetime value from ARPU, gross margin, and retention rate via a discounted-perpetuity model, with CLV:CAC health rating. - [Complementary Error Function Calculator](https://api.miniwebtool.com/tools/complementary-error-function-calculator.md) (slug: `complementary-error-function-calculator`, category: Math · Advanced, cost: 1cr) — Calculate erf(x), erfc(x), and related error-function values. - [Exponential Decay Calculator](https://api.miniwebtool.com/tools/exponential-decay-calculator.md) (slug: `exponential-decay-calculator`, category: Math · Advanced, cost: 1cr) — Solve continuous exponential decay equations for final amount, initial amount, rate, or time. - [Exponential Growth Calculator](https://api.miniwebtool.com/tools/exponential-growth-calculator.md) (slug: `exponential-growth-calculator`, category: Math · Advanced, cost: 1cr) — Solve continuous exponential growth equations for final amount, initial amount, rate, or time. - [Antilog Calculator](https://api.miniwebtool.com/tools/antilog-calculator.md) (slug: `antilog-calculator`, category: Math · Advanced Math, cost: 1cr) — Calculate an antilogarithm as base raised to an exponent. - [Error Function Calculator](https://api.miniwebtool.com/tools/error-function-calculator.md) (slug: `error-function-calculator`, category: Math · Advanced Math, cost: 1cr) — Evaluate erf, erfc, inverse erf, and inverse erfc for bounded inputs. - [Gamma Function Calculator](https://api.miniwebtool.com/tools/gamma-function-calculator.md) (slug: `gamma-function-calculator`, category: Math · Advanced Math, cost: 1cr) — Evaluate the gamma function for bounded real inputs. - [Absolute Value Equation Solver](https://api.miniwebtool.com/tools/absolute-value-equation-solver.md) (slug: `absolute-value-equation-solver`, category: Math · Algebra, cost: 1cr) — Solve equations of the form |a*x + b| = c. - [Absolute Value Inequality Solver](https://api.miniwebtool.com/tools/absolute-value-inequality-solver.md) (slug: `absolute-value-inequality-solver`, category: Math · Algebra, cost: 1cr) — Solve inequalities of the form |a*x + b| compared with c. - [Binomial Theorem Expansion Calculator](https://api.miniwebtool.com/tools/binomial-theorem-expansion-calculator.md) (slug: `binomial-theorem-expansion-calculator`, category: Math · Algebra, cost: 1cr) — Expand (a + b)^n for n up to 50 with every coefficient and term listed. - [Completing the Square Calculator](https://api.miniwebtool.com/tools/completing-the-square-calculator.md) (slug: `completing-the-square-calculator`, category: Math · Algebra, cost: 1cr) — Convert a quadratic to vertex form and solve by completing the square. - [Cubic Equation Solver](https://api.miniwebtool.com/tools/cubic-equation-solver.md) (slug: `cubic-equation-solver`, category: Math · Algebra, cost: 1cr) — Solve ax^3 + bx^2 + cx + d = 0 and return all real or complex roots. - [Descartes' Rule of Signs Calculator](https://api.miniwebtool.com/tools/descartes-rule-of-signs-calculator.md) (slug: `descartes-rule-of-signs-calculator`, category: Math · Algebra, cost: 1cr) — Possible counts of positive and negative real roots of a polynomial via sign changes in f(x) and f(-x), with the full root-count table. - [Distance-Speed-Time Triangle Calculator](https://api.miniwebtool.com/tools/distance-speed-time-triangle-calculator.md) (slug: `distance-speed-time-triangle-calculator`, category: Math · Algebra, cost: 1cr) — Solve distance, speed, or time from the other two, plus multi-leg average speed and round-trip harmonic mean. - [Expand Polynomials Calculator](https://api.miniwebtool.com/tools/expand-polynomials-calculator.md) (slug: `expand-polynomials-calculator`, category: Math · Algebra, cost: 1cr) — Expand a product of polynomial factors (optionally raised to a power) into standard form with exact rational coefficients. - [Linear Equation Solver](https://api.miniwebtool.com/tools/linear-equation-solver.md) (slug: `linear-equation-solver`, category: Math · Algebra, cost: 1cr) — Solve a linear equation in the form ax + b = c. - [Linear Programming Solver](https://api.miniwebtool.com/tools/linear-programming-solver.md) (slug: `linear-programming-solver`, category: Math · Algebra, cost: 1cr) — Solve a linear program by two-phase simplex in exact rational arithmetic, with slacks and binding constraints. - [Parabola Calculator](https://api.miniwebtool.com/tools/parabola-calculator.md) (slug: `parabola-calculator`, category: Math · Algebra, cost: 1cr) — Analyze a quadratic parabola from coefficients a, b, and c. - [Partial Fraction Decomposition Calculator](https://api.miniwebtool.com/tools/partial-fraction-decomposition-calculator.md) (slug: `partial-fraction-decomposition-calculator`, category: Math · Algebra, cost: 1cr) — Decompose a rational expression into partial fractions. - [Point Slope Form Calculator](https://api.miniwebtool.com/tools/point-slope-form-calculator.md) (slug: `point-slope-form-calculator`, category: Math · Algebra, cost: 1cr) — Build point-slope, slope-intercept, and standard-form line equations. - [Polynomial Factoring Calculator](https://api.miniwebtool.com/tools/polynomial-factoring-calculator.md) (slug: `polynomial-factoring-calculator`, category: Math · Algebra, cost: 1cr) — Factor a polynomial over the rationals: content, rational roots with multiplicity, linear factors, and any irreducible remainder. - [Polynomial Long Division Calculator](https://api.miniwebtool.com/tools/polynomial-long-division-calculator.md) (slug: `polynomial-long-division-calculator`, category: Math · Algebra, cost: 1cr) — Divide one polynomial by another with exact rational arithmetic, returning quotient, remainder, and step-by-step subtraction. - [Polynomial Roots Calculator](https://api.miniwebtool.com/tools/polynomial-roots-calculator.md) (slug: `polynomial-roots-calculator`, category: Math · Algebra, cost: 1cr) — Real and complex roots of a polynomial (degree up to 12) via exact formulas or Durand-Kerner iteration. - [Quadratic Formula Calculator](https://api.miniwebtool.com/tools/quadratic-formula-calculator.md) (slug: `quadratic-formula-calculator`, category: Math · Algebra, cost: 1cr) — Solve quadratic roots with discriminant and vertex details. - [Slope Intercept Form Calculator](https://api.miniwebtool.com/tools/slope-intercept-form-calculator.md) (slug: `slope-intercept-form-calculator`, category: Math · Algebra, cost: 1cr) — Build slope-intercept and standard-form line equations from m and b. - [Square Root Calculator](https://api.miniwebtool.com/tools/square-root-calculator.md) (slug: `square-root-calculator`, category: Math · Algebra, cost: 1cr) — Calculate the principal and negative square roots of a non-negative number. - [Standard Form to Slope Intercept Converter](https://api.miniwebtool.com/tools/standard-form-to-slope-intercept-converter.md) (slug: `standard-form-to-slope-intercept-converter`, category: Math · Algebra, cost: 1cr) — Convert Ax + By = C into slope-intercept form when possible. - [Synthetic Division Calculator](https://api.miniwebtool.com/tools/synthetic-division-calculator.md) (slug: `synthetic-division-calculator`, category: Math · Algebra, cost: 1cr) — Divide polynomial coefficients by x minus a using synthetic division. - [System of Linear Equations Solver](https://api.miniwebtool.com/tools/system-of-linear-equations-solver.md) (slug: `system-of-linear-equations-solver`, category: Math · Algebra, cost: 1cr) — Solve n x n linear systems (2 to 8 unknowns) exactly, including parametric infinite-solution forms. - [X and Y Intercept Calculator](https://api.miniwebtool.com/tools/x-y-intercept-calculator.md) (slug: `x-y-intercept-calculator`, category: Math · Algebra, cost: 1cr) — Find x- and y-intercepts for a linear equation ax + by + c = 0. - [Vertex and Axis of Symmetry Calculator](https://api.miniwebtool.com/tools/vertex-axis-calculator.md) (slug: `vertex-axis-calculator`, category: Math · Algebra Calculators, cost: 1cr) — Find the vertex and axis of symmetry for a quadratic ax^2 + bx + c. - [Parallel and Perpendicular Line Calculator](https://api.miniwebtool.com/tools/parallel-and-perpendicular-line-calculator.md) (slug: `parallel-and-perpendicular-line-calculator`, category: Math · Analytic Geometry, cost: 1cr) — Find parallel and perpendicular lines through a given point. - [Radian to Degree Converter](https://api.miniwebtool.com/tools/radian-to-degree-converter.md) (slug: `radian-to-degree-converter`, category: Math · Angles, cost: 1cr) — Convert radians, fractions, or pi expressions to degrees. - [Acreage Calculator](https://api.miniwebtool.com/tools/acreage-calculator.md) (slug: `acreage-calculator`, category: Math · Area, cost: 1cr) — Calculate land acreage from rectangle, triangle, or circle dimensions. - [Hectares to Acres Converter](https://api.miniwebtool.com/tools/hectares-to-acres-converter.md) (slug: `hectares-to-acres-converter`, category: Math · Area, cost: 1cr) — Convert hectares to acres and related land-area units. - [Square Feet to Acres Converter](https://api.miniwebtool.com/tools/square-feet-to-acres-converter.md) (slug: `square-feet-to-acres-converter`, category: Math · Area, cost: 1cr) — Convert square feet to acres and related land-area units. - [Square Footage Calculator](https://api.miniwebtool.com/tools/square-footage-calculator.md) (slug: `square-footage-calculator`, category: Math · Area, cost: 1cr) — Calculate square footage for common room, lot, and curved shapes. - [Square Meters to Acres Converter](https://api.miniwebtool.com/tools/square-meters-to-acres-converter.md) (slug: `square-meters-to-acres-converter`, category: Math · Area, cost: 1cr) — Convert square meters to acres and related land-area units. - [Square Miles to Acres Converter](https://api.miniwebtool.com/tools/square-miles-to-acres-converter.md) (slug: `square-miles-to-acres-converter`, category: Math · Area, cost: 1cr) — Convert square miles to acres and related land-area units. - [Long Addition and Subtraction Calculator](https://api.miniwebtool.com/tools/long-addition-and-subtraction-calculator.md) (slug: `long-addition-and-subtraction-calculator`, category: Math · Arithmetic, cost: 1cr) — Add or subtract large integers and return aligned column output. - [Multiplication Calculator](https://api.miniwebtool.com/tools/multiplication-calculator.md) (slug: `multiplication-calculator`, category: Math · Arithmetic, cost: 1cr) — Multiply a list of numbers exactly, without floating-point drift. - [Order of Operations Calculator PEMDAS](https://api.miniwebtool.com/tools/order-of-operations-calculator-pemdas.md) (slug: `order-of-operations-calculator-pemdas`, category: Math · Arithmetic, cost: 1cr) — Evaluate arithmetic expressions using standard PEMDAS precedence. - [BPM to Millisecond Delay Calculator](https://api.miniwebtool.com/tools/bpm-to-ms-delay-calculator.md) (slug: `bpm-to-ms-delay-calculator`, category: Math · Audio, cost: 1cr) — Convert tempo in BPM into synchronized straight, dotted, and triplet delay times. - [Absolute Value Calculator](https://api.miniwebtool.com/tools/absolute-value-calculator.md) (slug: `absolute-value-calculator`, category: Math · Basic Math, cost: 1cr) — Calculate the absolute value of a real or complex number. - [Cube and Cube Root Calculator](https://api.miniwebtool.com/tools/cube-and-cube-root-calculator.md) (slug: `cube-and-cube-root-calculator`, category: Math · Basic Math, cost: 1cr) — Calculate a number's cube and cube root. - [Cube Root Calculator](https://api.miniwebtool.com/tools/cube-root-calculator.md) (slug: `cube-root-calculator`, category: Math · Basic Math, cost: 1cr) — Calculate the real cube root of a finite number. - [Even or Odd Number Checker](https://api.miniwebtool.com/tools/even-or-odd-number-checker.md) (slug: `even-or-odd-number-checker`, category: Math · Basic Math, cost: 1cr) — Check whether one or more integers are even or odd. - [First n Digits of e](https://api.miniwebtool.com/tools/first-n-digits-of-e.md) (slug: `first-n-digits-of-e`, category: Math · Basic Math, cost: 1cr) — First n digits of Euler's number e (Decimal series sum 1/n!) with digit-frequency analysis. - [First n Digits of Pi](https://api.miniwebtool.com/tools/first-n-digits-of-pi.md) (slug: `first-n-digits-of-pi`, category: Math · Basic Math, cost: 1cr) — First n digits of pi (Chudnovsky series, exact via Decimal) with digit-frequency analysis. - [Long Division Calculator](https://api.miniwebtool.com/tools/long-division-calculator.md) (slug: `long-division-calculator`, category: Math · Basic Math, cost: 1cr) — Calculate quotient, remainder, decimal expansion, and long division steps. - [Long Multiplication Calculator](https://api.miniwebtool.com/tools/long-multiplication-calculator.md) (slug: `long-multiplication-calculator`, category: Math · Basic Math, cost: 1cr) — Calculate a product with long multiplication partial products. - [Nth Root Calculator](https://api.miniwebtool.com/tools/nth-root-calculator.md) (slug: `nth-root-calculator`, category: Math · Basic Math, cost: 1cr) — High-precision nth roots (up to 100 decimals) with exact-root detection and verification. - [Number of Digits](https://api.miniwebtool.com/tools/number-of-digits.md) (slug: `number-of-digits`, category: Math · Basic Math, cost: 1cr) — Count the digits of any integer with digit frequency, palindrome check, and scientific notation. - [Quotient and Remainder Calculator](https://api.miniwebtool.com/tools/quotient-and-remainder-calculator.md) (slug: `quotient-and-remainder-calculator`, category: Math · Basic Math, cost: 1cr) — Compute the integer quotient and remainder of a division with verification. - [Sum Calculator](https://api.miniwebtool.com/tools/sum-calculator.md) (slug: `sum-calculator`, category: Math · Basic Math, cost: 1cr) — High-precision decimal sum of up to 5000 numbers with average, median, and sign statistics. - [Average Rate of Change Calculator](https://api.miniwebtool.com/tools/average-rate-of-change-calculator.md) (slug: `average-rate-of-change-calculator`, category: Math · Calculus, cost: 1cr) — Compute the average rate of change of f(x) on [a, b] with the secant line equation. - [Bernoulli ODE Solver](https://api.miniwebtool.com/tools/bernoulli-ode-solver.md) (slug: `bernoulli-ode-solver`, category: Math · Calculus, cost: 1cr) — Solve y' + p·y = q·y^n by the v = y^(1-n) substitution, with the linearised form and an RK4 cross-check. - [Curl Calculator](https://api.miniwebtool.com/tools/curl-calculator.md) (slug: `curl-calculator`, category: Math · Calculus, cost: 1cr) — Compute the curl of a 3D vector field (or the scalar curl in 2D) with optional evaluation at a point. - [Curvature Calculator](https://api.miniwebtool.com/tools/curvature-calculator.md) (slug: `curvature-calculator`, category: Math · Calculus, cost: 1cr) — Calculate curvature and radius of curvature for a quadratic function. - [Directional Derivative Calculator](https://api.miniwebtool.com/tools/directional-derivative-calculator.md) (slug: `directional-derivative-calculator`, category: Math · Calculus, cost: 1cr) — Compute the directional derivative of a function along a direction vector, with the maximum rate of change. - [Divergence Calculator](https://api.miniwebtool.com/tools/divergence-calculator.md) (slug: `divergence-calculator`, category: Math · Calculus, cost: 1cr) — Compute the divergence of a 2D or 3D vector field, with per-term partials and source/sink classification. - [Double Integral Calculator](https://api.miniwebtool.com/tools/double-integral-calculator.md) (slug: `double-integral-calculator`, category: Math · Calculus, cost: 1cr) — Evaluate an iterated double integral over rectangular or variable-limit regions. - [Euler's Method Calculator](https://api.miniwebtool.com/tools/euler-s-method-calculator.md) (slug: `euler-s-method-calculator`, category: Math · Calculus, cost: 1cr) — Step an initial value problem forward with explicit Euler, with a full table and optional exact-solution error. - [Fast Fourier Transform (FFT) Calculator](https://api.miniwebtool.com/tools/fast-fourier-transform-fft-calculator.md) (slug: `fast-fourier-transform-fft-calculator`, category: Math · Calculus, cost: 1cr) — Discrete Fourier transform of a sample list by radix-2 FFT, with magnitude, phase and the dominant frequency. - [First Order ODE Solver](https://api.miniwebtool.com/tools/first-order-ode-solver.md) (slug: `first-order-ode-solver`, category: Math · Calculus, cost: 1cr) — Classify and solve y' = f(x, y): closed form for constant-coefficient linear equations plus an RK4 solution table and slope field. - [Fourier Series Coefficients Calculator](https://api.miniwebtool.com/tools/fourier-series-coefficients-calculator.md) (slug: `fourier-series-coefficients-calculator`, category: Math · Calculus, cost: 1cr) — Fourier coefficients a0, a_n and b_n for a function over one period, with amplitude, phase and symmetry detection. - [Gradient Calculator (Multivariable)](https://api.miniwebtool.com/tools/gradient-calculator-multivariable.md) (slug: `gradient-calculator-multivariable`, category: Math · Calculus, cost: 1cr) — Compute the gradient vector of a multivariable function, with optional evaluation, magnitude, and direction at a point. - [Implicit Derivative Calculator](https://api.miniwebtool.com/tools/implicit-derivative-calculator.md) (slug: `implicit-derivative-calculator`, category: Math · Calculus, cost: 1cr) — Differentiate an implicit equation to first, second, or third order using the partial-derivative quotient. - [Infinite Series Sum Calculator](https://api.miniwebtool.com/tools/infinite-series-sum-calculator.md) (slug: `infinite-series-sum-calculator`, category: Math · Calculus, cost: 1cr) — Closed-form sums for classic infinite series: geometric, p-series, telescoping, alternating harmonic, Leibniz, Basel, e^x, and alternating p-series. - [Inverse Laplace Transform Calculator](https://api.miniwebtool.com/tools/inverse-laplace-transform-calculator.md) (slug: `inverse-laplace-transform-calculator`, category: Math · Calculus, cost: 1cr) — Invert a proper rational Laplace transform by exact partial fractions, including repeated and complex poles. - [Jacobian Matrix Calculator](https://api.miniwebtool.com/tools/jacobian-matrix-calculator.md) (slug: `jacobian-matrix-calculator`, category: Math · Calculus, cost: 1cr) — Build the Jacobian matrix of a vector-valued function, with the symbolic determinant when it is square. - [L'Hopital's Rule Calculator](https://api.miniwebtool.com/tools/l-h-pital-s-rule-calculator.md) (slug: `l-h-pital-s-rule-calculator`, category: Math · Calculus, cost: 1cr) — Resolve 0/0 and infinity/infinity limits by repeated differentiation, showing each application of the rule. - [Laplace Transform Calculator](https://api.miniwebtool.com/tools/laplace-transform-calculator.md) (slug: `laplace-transform-calculator`, category: Math · Calculus, cost: 1cr) — Laplace transform of a sum of powers, exponentials and trigonometric terms, with the region of convergence. - [Line Integral Calculator](https://api.miniwebtool.com/tools/line-integral-calculator.md) (slug: `line-integral-calculator`, category: Math · Calculus, cost: 1cr) — Evaluate scalar or vector line integrals along a parametric curve, with arc length and conservative-field check. - [Maclaurin Series Calculator](https://api.miniwebtool.com/tools/maclaurin-series-calculator.md) (slug: `maclaurin-series-calculator`, category: Math · Calculus, cost: 1cr) — Exact-coefficient Maclaurin (Taylor at 0) series expansion for common functions, with optional evaluation. - [Partial Derivative Calculator](https://api.miniwebtool.com/tools/partial-derivative-calculator.md) (slug: `partial-derivative-calculator`, category: Math · Calculus, cost: 1cr) — Differentiate a symbolic expression with respect to x, y, z, or t. - [Second Order ODE Solver](https://api.miniwebtool.com/tools/second-order-ode-solver.md) (slug: `second-order-ode-solver`, category: Math · Calculus, cost: 1cr) — Solve a·y'' + b·y' + c·y = 0 from the characteristic equation, with the initial-value constants and damping ratio. - [Series Convergence Test Calculator](https://api.miniwebtool.com/tools/series-convergence-test-calculator.md) (slug: `series-convergence-test-calculator`, category: Math · Calculus, cost: 1cr) — Convergence verdict (absolute/conditional/divergent) for common series families with ratio, root, and divergence test estimates. - [Taylor Series Calculator](https://api.miniwebtool.com/tools/taylor-series-calculator.md) (slug: `taylor-series-calculator`, category: Math · Calculus, cost: 1cr) — Taylor series expansion of common functions about any center a, using exact shifted-derivative formulas, with optional evaluation. - [Bar Graph Maker](https://api.miniwebtool.com/tools/bar-graph-maker.md) (slug: `bar-graph-maker`, category: Math · Charts, cost: 1cr) — Prepare normalized bar-chart data from labels and numeric values. - [Binomial Coefficient Calculator](https://api.miniwebtool.com/tools/binomial-coefficient-calculator.md) (slug: `binomial-coefficient-calculator`, category: Math · Combinatorics, cost: 1cr) — Calculate C(n, k), the number of combinations choosing k items from n. - [Combination Calculator](https://api.miniwebtool.com/tools/combination-calculator.md) (slug: `combination-calculator`, category: Math · Combinatorics, cost: 1cr) — Calculate combinations C(n, k). - [Derangement (Subfactorial) Calculator](https://api.miniwebtool.com/tools/derangement-subfactorial-calculator.md) (slug: `derangement-subfactorial-calculator`, category: Math · Combinatorics, cost: 1cr) — Calculate the number of derangements (subfactorial !n) for n elements. - [Permutation Calculator](https://api.miniwebtool.com/tools/permutation-calculator.md) (slug: `permutation-calculator`, category: Math · Combinatorics, cost: 1cr) — Calculate P(n,r), where order matters and repetition is not allowed. - [Permutations with Repetition Calculator](https://api.miniwebtool.com/tools/permutations-with-repetition-calculator.md) (slug: `permutations-with-repetition-calculator`, category: Math · Combinatorics, cost: 1cr) — Calculate n^r ordered arrangements where items can repeat. - [Stirling Numbers Calculator](https://api.miniwebtool.com/tools/stirling-numbers-calculator.md) (slug: `stirling-numbers-calculator`, category: Math · Combinatorics, cost: 1cr) — Calculate unsigned Stirling numbers of the first kind and Stirling numbers of the second kind. - [Complex Numbers Calculator](https://api.miniwebtool.com/tools/complex-numbers-calculator.md) (slug: `complex-numbers-calculator`, category: Math · Complex Numbers, cost: 1cr) — Add, subtract, multiply, or divide two complex numbers. - [Hyperbola Calculator](https://api.miniwebtool.com/tools/hyperbola-calculator.md) (slug: `hyperbola-calculator`, category: Math · Conics, cost: 1cr) — Calculate standard-form hyperbola vertices, foci, eccentricity, and asymptotes. - [Flooring Calculator](https://api.miniwebtool.com/tools/flooring-calculator.md) (slug: `flooring-calculator`, category: Math · Construction, cost: 1cr) — Estimate flooring material units, waste allowance, and optional cost. - [Insulation Calculator](https://api.miniwebtool.com/tools/insulation-calculator.md) (slug: `insulation-calculator`, category: Math · Construction, cost: 1cr) — Estimate insulation R-value target, thickness, material quantity, and cost range. - [Paver Calculator](https://api.miniwebtool.com/tools/paver-calculator.md) (slug: `paver-calculator`, category: Math · Construction, cost: 1cr) — Estimate paving stones needed for a rectangular project area. - [Butter to Oil Converter](https://api.miniwebtool.com/tools/butter-to-oil-converter.md) (slug: `butter-to-oil-converter`, category: Math · Cooking, cost: 1cr) — Convert butter quantities to practical oil equivalents for baking. - [Polar to Cartesian Converter](https://api.miniwebtool.com/tools/polar-to-cartesian-converter.md) (slug: `polar-to-cartesian-converter`, category: Math · Coordinate Geometry, cost: 1cr) — Convert polar coordinates to Cartesian x and y coordinates. - [Final Grade Calculator](https://api.miniwebtool.com/tools/final-grade-calculator.md) (slug: `final-grade-calculator`, category: Math · Education, cost: 1cr) — Calculate the final exam score needed to reach a target course grade. - [LED Resistor Calculator](https://api.miniwebtool.com/tools/led-resistor-calculator.md) (slug: `led-resistor-calculator`, category: Math · Electronics, cost: 1cr) — Calculate LED current-limiting resistor values and power ratings. - [PCB Trace Width Calculator](https://api.miniwebtool.com/tools/pcb-trace-width-calculator.md) (slug: `pcb-trace-width-calculator`, category: Math · Electronics, cost: 1cr) — Estimate PCB trace width using the IPC-2221 current capacity formula. - [Exponents Calculator](https://api.miniwebtool.com/tools/exponents-calculator.md) (slug: `exponents-calculator`, category: Math · Exponents, cost: 1cr) — Raise a base to any power: exact decimal arithmetic for integer exponents up to ±500. - [Half Life Calculator](https://api.miniwebtool.com/tools/half-life-calculator.md) (slug: `half-life-calculator`, category: Math · Exponents, cost: 1cr) — Solve exponential decay for remaining amount, initial amount, elapsed time, or half-life. - [Payback Period Calculator](https://api.miniwebtool.com/tools/payback-period-calculator.md) (slug: `payback-period-calculator`, category: Math · Finance, cost: 1cr) — Calculate the payback period from an initial investment and annual cash flows. - [Comparing Fractions Calculator](https://api.miniwebtool.com/tools/comparing-fractions-calculator.md) (slug: `comparing-fractions-calculator`, category: Math · Fractions, cost: 1cr) — Compare two fractions or mixed numbers using a common denominator. - [Decimal to Fraction Calculator](https://api.miniwebtool.com/tools/decimal-to-fraction-calculator.md) (slug: `decimal-to-fraction-calculator`, category: Math · Fractions, cost: 1cr) — Convert a decimal or parenthesized repeating decimal to a fraction. - [Equivalent Fractions Calculator](https://api.miniwebtool.com/tools/equivalent-fractions-calculator.md) (slug: `equivalent-fractions-calculator`, category: Math · Fractions, cost: 1cr) — Generate equivalent fractions or check whether two fractions are equivalent. - [Fraction Calculator](https://api.miniwebtool.com/tools/fraction-calculator.md) (slug: `fraction-calculator`, category: Math · Fractions, cost: 1cr) — Add, subtract, multiply, divide, compare, or simplify fractions. - [Fraction Simplifier](https://api.miniwebtool.com/tools/fraction-simplifier.md) (slug: `fraction-simplifier`, category: Math · Fractions, cost: 1cr) — Reduce a fraction to lowest terms and return GCF, mixed number, decimal, percentage, and equivalents. - [Fraction to Decimal Calculator](https://api.miniwebtool.com/tools/fraction-to-decimal-calculator.md) (slug: `fraction-to-decimal-calculator`, category: Math · Fractions, cost: 1cr) — Convert proper, improper, or mixed fractions to decimals and detect repeating decimal patterns. - [Fraction to Mixed Number Converter](https://api.miniwebtool.com/tools/fraction-to-mixed-number-converter.md) (slug: `fraction-to-mixed-number-converter`, category: Math · Fractions, cost: 1cr) — Convert an improper fraction to a simplified mixed number. - [Fraction to Percent Converter](https://api.miniwebtool.com/tools/fraction-to-percent-converter.md) (slug: `fraction-to-percent-converter`, category: Math · Fractions, cost: 1cr) — Convert proper, improper, or mixed fractions to percentages with configurable decimal places. - [Mixed Number to Fraction Converter](https://api.miniwebtool.com/tools/mixed-number-to-fraction-converter.md) (slug: `mixed-number-to-fraction-converter`, category: Math · Fractions, cost: 1cr) — Convert a mixed number to an improper fraction and simplified form. - [Multiple Fraction Calculator](https://api.miniwebtool.com/tools/multiple-fraction-calculator.md) (slug: `multiple-fraction-calculator`, category: Math · Fractions, cost: 1cr) — Apply one arithmetic operation across a list of fractions. - [Number to Fraction Converter](https://api.miniwebtool.com/tools/number-to-fraction-converter.md) (slug: `number-to-fraction-converter`, category: Math · Fractions, cost: 1cr) — Convert decimals, percentages, mixed numbers, and repeating decimals to fractions. - [Reduce Fractions Calculator](https://api.miniwebtool.com/tools/reduce-fractions-calculator.md) (slug: `reduce-fractions-calculator`, category: Math · Fractions, cost: 1cr) — Reduce a proper, improper, or mixed fraction to lowest terms. - [Ceiling and Floor Function Calculator](https://api.miniwebtool.com/tools/ceiling-and-floor-function-calculator.md) (slug: `ceiling-and-floor-function-calculator`, category: Math · Functions, cost: 1cr) — Evaluate floor, ceiling, fractional part, and nearest integer of a value. - [Function Composition Calculator](https://api.miniwebtool.com/tools/function-composition-calculator.md) (slug: `function-composition-calculator`, category: Math · Functions, cost: 1cr) — Evaluate f(x), g(x), f(g(x)), and g(f(x)) for arithmetic functions. - [Function Odd Even Neither Checker](https://api.miniwebtool.com/tools/function-odd-even-neither-checker.md) (slug: `function-odd-even-neither-checker`, category: Math · Functions, cost: 1cr) — Classify a function as odd, even, both, or neither over sample points. - [Hyperbolic Functions Calculator](https://api.miniwebtool.com/tools/hyperbolic-functions-calculator.md) (slug: `hyperbolic-functions-calculator`, category: Math · Functions, cost: 1cr) — Calculate sinh, cosh, tanh and reciprocal hyperbolic functions. - [DPS Calculator](https://api.miniwebtool.com/tools/dps-calculator.md) (slug: `dps-calculator`, category: Math · Games, cost: 1cr) — Calculate raw, sustained, critical-hit, and headshot damage per second. - [3D Distance Calculator](https://api.miniwebtool.com/tools/3d-distance-calculator.md) (slug: `3d-distance-calculator`, category: Math · Geometry, cost: 1cr) — Calculate 3D Euclidean distance, midpoint, direction cosines, and related distances. - [Angle Bisector Calculator](https://api.miniwebtool.com/tools/angle-bisector-calculator.md) (slug: `angle-bisector-calculator`, category: Math · Geometry, cost: 1cr) — Calculate triangle angle bisectors, angles, area, and inradius from side lengths. - [Arc Length Calculator](https://api.miniwebtool.com/tools/arc-length-calculator.md) (slug: `arc-length-calculator`, category: Math · Geometry, cost: 1cr) — Solve arc length, radius, or central angle for a circle sector. - [Area of a Circle Calculator](https://api.miniwebtool.com/tools/area-of-a-circle-calculator.md) (slug: `area-of-a-circle-calculator`, category: Math · Geometry, cost: 1cr) — Calculate circle radius, diameter, circumference, and area from one value. - [Area of a Parallelogram Calculator](https://api.miniwebtool.com/tools/area-of-a-parallelogram-calculator.md) (slug: `area-of-a-parallelogram-calculator`, category: Math · Geometry, cost: 1cr) — Find parallelogram area from base-height, sides-angle, or diagonals-angle inputs. - [Area of a Sector Calculator](https://api.miniwebtool.com/tools/area-of-a-sector-calculator.md) (slug: `area-of-a-sector-calculator`, category: Math · Geometry, cost: 1cr) — Calculate sector area, arc length, perimeter, chord, and segment area. - [Area of a Trapezoid Calculator](https://api.miniwebtool.com/tools/area-of-a-trapezoid-calculator.md) (slug: `area-of-a-trapezoid-calculator`, category: Math · Geometry, cost: 1cr) — Calculate trapezoid area from two parallel bases and height. - [Area of an Ellipse Calculator](https://api.miniwebtool.com/tools/area-of-an-ellipse-calculator.md) (slug: `area-of-an-ellipse-calculator`, category: Math · Geometry, cost: 1cr) — Calculate ellipse area, Ramanujan perimeter, foci, and eccentricity. - [Area of Equilateral Triangle Calculator](https://api.miniwebtool.com/tools/area-of-equilateral-triangle-calculator.md) (slug: `area-of-equilateral-triangle-calculator`, category: Math · Geometry, cost: 1cr) — Calculate equilateral-triangle side, area, height, perimeter, and radii. - [Cartesian to Polar Coordinates Converter](https://api.miniwebtool.com/tools/cartesian-to-polar-converter.md) (slug: `cartesian-to-polar-converter`, category: Math · Geometry, cost: 1cr) — Convert Cartesian x-y coordinates to polar radius and angle. - [Circle Calculator](https://api.miniwebtool.com/tools/circle-calculator.md) (slug: `circle-calculator`, category: Math · Geometry, cost: 1cr) — Calculate circle radius, diameter, circumference, area, and optional arc/sector values. - [Circumscribed Circle Circumcircle Calculator](https://api.miniwebtool.com/tools/circumscribed-circle-circumcircle-calculator.md) (slug: `circumscribed-circle-circumcircle-calculator`, category: Math · Geometry, cost: 1cr) — Calculate the circumcircle of a triangle from side lengths or coordinates. - [Cone Flat Pattern Template Generator](https://api.miniwebtool.com/tools/cone-flat-pattern-template-generator.md) (slug: `cone-flat-pattern-template-generator`, category: Math · Geometry, cost: 1cr) — Calculate unrolled cone or frustum flat-pattern dimensions. - [Conic Section Identifier](https://api.miniwebtool.com/tools/conic-section-identifier.md) (slug: `conic-section-identifier`, category: Math · Geometry, cost: 1cr) — Classify a general second-degree equation as a conic section. - [Coordinate Geometry Distance Calculator](https://api.miniwebtool.com/tools/coordinate-geometry-distance-calculator.md) (slug: `coordinate-geometry-distance-calculator`, category: Math · Geometry, cost: 1cr) — Calculate distance, midpoint, slope, and line equations between two points. - [Cylinder Calculator](https://api.miniwebtool.com/tools/cylinder-calculator.md) (slug: `cylinder-calculator`, category: Math · Geometry, cost: 1cr) — Calculate cylinder volume, base area, lateral area, and total surface area. - [Distance Between Two Points Calculator](https://api.miniwebtool.com/tools/distance-between-two-points-calculator.md) (slug: `distance-between-two-points-calculator`, category: Math · Geometry, cost: 1cr) — Calculate 2D point distance, midpoint, slope, and line equation. - [Ellipse Circumference Calculator](https://api.miniwebtool.com/tools/ellipse-circumference-calculator.md) (slug: `ellipse-circumference-calculator`, category: Math · Geometry, cost: 1cr) — Calculate ellipse circumference with several common approximations. - [Euler Characteristic Calculator](https://api.miniwebtool.com/tools/euler-characteristic-calculator.md) (slug: `euler-characteristic-calculator`, category: Math · Geometry, cost: 1cr) — Calculate Euler characteristic V - E + F and classify common surfaces. - [Frustum Calculator](https://api.miniwebtool.com/tools/frustum-calculator.md) (slug: `frustum-calculator`, category: Math · Geometry, cost: 1cr) — Calculate volume and surface area for a conical frustum. - [General Triangle Solver](https://api.miniwebtool.com/tools/general-triangle-solver.md) (slug: `general-triangle-solver`, category: Math · Geometry, cost: 1cr) — Solve any triangle (SSS, SAS, ASA, AAS, or the ambiguous SSA case) for all sides, angles, and area. - [Golden Ratio Calculator](https://api.miniwebtool.com/tools/golden-ratio-calculator.md) (slug: `golden-ratio-calculator`, category: Math · Geometry, cost: 1cr) — Calculate golden-ratio segments from total, larger, or smaller segment. - [Golden Rectangle Calculator](https://api.miniwebtool.com/tools/golden-rectangle-calculator.md) (slug: `golden-rectangle-calculator`, category: Math · Geometry, cost: 1cr) — Calculate golden rectangle dimensions, area, perimeter, and aspect ratio. - [Golden Section Calculator](https://api.miniwebtool.com/tools/golden-section-calculator.md) (slug: `golden-section-calculator`, category: Math · Geometry, cost: 1cr) — Find the golden-section points within an interval. - [Great Circle Distance Calculator](https://api.miniwebtool.com/tools/great-circle-distance-calculator.md) (slug: `great-circle-distance-calculator`, category: Math · Geometry, cost: 1cr) — Calculate great-circle distance, bearing, and midpoint between two coordinates. - [Heron's Formula Calculator](https://api.miniwebtool.com/tools/heron-s-formula-calculator.md) (slug: `heron-s-formula-calculator`, category: Math · Geometry, cost: 1cr) — Calculate triangle area from three side lengths using Heron's formula. - [Hypotenuse Calculator](https://api.miniwebtool.com/tools/hypotenuse-calculator.md) (slug: `hypotenuse-calculator`, category: Math · Geometry, cost: 1cr) — Calculate the hypotenuse and basic right-triangle measures from two legs. - [Inscribed Circle (Incircle) Calculator](https://api.miniwebtool.com/tools/inscribed-circle-incircle-calculator.md) (slug: `inscribed-circle-incircle-calculator`, category: Math · Geometry, cost: 1cr) — Incircle radius (and incenter, from vertex coordinates) of a triangle from side lengths or points. - [Midpoint Calculator](https://api.miniwebtool.com/tools/midpoint-calculator.md) (slug: `midpoint-calculator`, category: Math · Geometry, cost: 1cr) — Find the midpoint, distance, slope, and angle between two points. - [Point to Plane Distance Calculator](https://api.miniwebtool.com/tools/point-to-plane-distance-calculator.md) (slug: `point-to-plane-distance-calculator`, category: Math · Geometry, cost: 1cr) — Calculate the distance from a 3D point to a plane Ax + By + Cz + D = 0. - [Polygon Diagonals Calculator](https://api.miniwebtool.com/tools/polygon-diagonals-calculator.md) (slug: `polygon-diagonals-calculator`, category: Math · Geometry, cost: 1cr) — Calculate the number of diagonals and angle facts for a polygon. - [Pythagorean Theorem Calculator](https://api.miniwebtool.com/tools/pythagorean-theorem-calculator.md) (slug: `pythagorean-theorem-calculator`, category: Math · Geometry, cost: 1cr) — Find a missing right-triangle side and calculate area, perimeter, and angles. - [Rectangle Calculator](https://api.miniwebtool.com/tools/rectangle-calculator.md) (slug: `rectangle-calculator`, category: Math · Geometry, cost: 1cr) — Calculate rectangle area, perimeter, diagonal, radii, and aspect ratio from two known values. - [Regular Polygon Calculator](https://api.miniwebtool.com/tools/regular-polygon-calculator.md) (slug: `regular-polygon-calculator`, category: Math · Geometry, cost: 1cr) — Calculate regular polygon area, perimeter, apothem, circumradius, angles, and diagonal count. - [Right Triangle Calculator](https://api.miniwebtool.com/tools/right-triangle-calculator.md) (slug: `right-triangle-calculator`, category: Math · Geometry, cost: 1cr) — Solve a right triangle from two sides or one side and one acute angle. - [Shoelace Formula Calculator](https://api.miniwebtool.com/tools/shoelace-formula-calculator.md) (slug: `shoelace-formula-calculator`, category: Math · Geometry, cost: 1cr) — Calculate polygon area from vertex coordinates using the shoelace formula. - [Slope and Grade Calculator](https://api.miniwebtool.com/tools/slope-and-grade-calculator.md) (slug: `slope-and-grade-calculator`, category: Math · Geometry, cost: 1cr) — Convert rise and run into slope, grade percentage and angle. - [Slope Calculator](https://api.miniwebtool.com/tools/slope-calculator.md) (slug: `slope-calculator`, category: Math · Geometry, cost: 1cr) — Calculate slope, angle, intercepts, and line equation from two points. - [Sphere Calculator](https://api.miniwebtool.com/tools/sphere-calculator.md) (slug: `sphere-calculator`, category: Math · Geometry, cost: 1cr) — Calculate sphere radius, diameter, circumference, surface area, and volume. - [Square Calculator](https://api.miniwebtool.com/tools/square-calculator.md) (slug: `square-calculator`, category: Math · Geometry, cost: 1cr) — Calculate square side length, area, perimeter, diagonal, inradius, and circumradius from one known value. - [Triangle Area Calculator](https://api.miniwebtool.com/tools/triangle-area-calculator.md) (slug: `triangle-area-calculator`, category: Math · Geometry, cost: 1cr) — Calculate triangle area from base and height or Heron's formula. - [Triangle Centroid Calculator](https://api.miniwebtool.com/tools/triangle-centroid-calculator.md) (slug: `triangle-centroid-calculator`, category: Math · Geometry, cost: 1cr) — Calculate a triangle centroid and related side, area, and median properties. - [Surface Area of a Rectangular Prism Calculator](https://api.miniwebtool.com/tools/surface-area-of-a-rectangular-prism-calculator.md) (slug: `surface-area-of-a-rectangular-prism-calculator`, category: Math · Geometry Calculators, cost: 1cr) — Calculate rectangular prism surface area, lateral area, volume, diagonal, and face areas. - [Tangent Line to Circle Calculator](https://api.miniwebtool.com/tools/tangent-line-to-circle-calculator.md) (slug: `tangent-line-to-circle-calculator`, category: Math · Geometry Calculators, cost: 1cr) — Find tangent line equations and contact points from a point to a circle. - [Torus Calculator](https://api.miniwebtool.com/tools/torus-calculator.md) (slug: `torus-calculator`, category: Math · Geometry Calculators, cost: 1cr) — Calculate torus volume, surface area, and key radii. - [Triangle Orthocenter Calculator](https://api.miniwebtool.com/tools/triangle-orthocenter-calculator.md) (slug: `triangle-orthocenter-calculator`, category: Math · Geometry Calculators, cost: 1cr) — Calculate a triangle orthocenter, altitude feet, side lengths, area, and classifications from coordinates. - [Adjacency Matrix Calculator](https://api.miniwebtool.com/tools/adjacency-matrix-calculator.md) (slug: `adjacency-matrix-calculator`, category: Math · Graph Theory, cost: 1cr) — Build an adjacency matrix from an edge list (or read one back), with degrees, density, connected components, symmetry, and walk counts from matrix powers. - [Dijkstra's Shortest Path Calculator](https://api.miniwebtool.com/tools/dijkstra-s-shortest-path-calculator.md) (slug: `dijkstra-s-shortest-path-calculator`, category: Math · Graph Theory, cost: 1cr) — Run Dijkstra's algorithm on a small weighted graph. - [Graph Coloring Calculator](https://api.miniwebtool.com/tools/graph-coloring-calculator.md) (slug: `graph-coloring-calculator`, category: Math · Graph Theory, cost: 1cr) — Colour an undirected graph with greedy, Welsh-Powell, DSATUR, or exact search, reporting colour classes, the chromatic number, bipartiteness, and bounds. - [Graph Degree Sequence Validator](https://api.miniwebtool.com/tools/graph-degree-sequence-validator.md) (slug: `graph-degree-sequence-validator`, category: Math · Graph Theory, cost: 1cr) — Validate simple graph degree sequences with the Havel-Hakimi algorithm. - [Planar Graph Checker](https://api.miniwebtool.com/tools/planar-graph-checker.md) (slug: `planar-graph-checker`, category: Math · Graph Theory, cost: 1cr) — Check graph edge bounds and direct K5/K3,3 obstructions, with components and degree data. - [Topological Sort Calculator](https://api.miniwebtool.com/tools/topological-sort-calculator.md) (slug: `topological-sort-calculator`, category: Math · Graph Theory, cost: 1cr) — Topologically order a directed graph with Kahn or DFS, detect cycles, and report layers, sources, sinks, longest path, and the number of valid orderings. - [Logarithmic Growth Calculator](https://api.miniwebtool.com/tools/logarithmic-growth-calculator.md) (slug: `logarithmic-growth-calculator`, category: Math · Growth, cost: 1cr) — Solve compound growth value, time-to-target, or rate using logarithms. - [Aquarium Substrate Calculator](https://api.miniwebtool.com/tools/aquarium-substrate-calculator.md) (slug: `aquarium-substrate-calculator`, category: Math · Home, cost: 1cr) — Estimate aquarium substrate volume, weight, and bag counts. - [Feet and Inches to Cm Converter](https://api.miniwebtool.com/tools/feet-and-inches-to-cm-converter.md) (slug: `feet-and-inches-to-cm-converter`, category: Math · Length, cost: 1cr) — Convert feet and inches to total inches, centimeters, meters, and height comparison percentages. - [Inches to Millimeters Converter](https://api.miniwebtool.com/tools/inches-to-mm-converter.md) (slug: `inches-to-mm-converter`, category: Math · Length Converters, cost: 1cr) — Convert decimal, fractional, or mixed-number inches to millimeters. - [Christmas Tree Calculator](https://api.miniwebtool.com/tools/christmas-tree-calculator.md) (slug: `christmas-tree-calculator`, category: Math · Lifestyle, cost: 1cr) — Check tree height fit and estimate lights, ornaments, and garland. - [Angle Between Vectors Calculator](https://api.miniwebtool.com/tools/angle-between-vectors-calculator.md) (slug: `angle-between-vectors-calculator`, category: Math · Linear Algebra, cost: 1cr) — Calculate the angle between two 2D or 3D vectors. - [Characteristic Polynomial Calculator](https://api.miniwebtool.com/tools/characteristic-polynomial-calculator.md) (slug: `characteristic-polynomial-calculator`, category: Math · Linear Algebra, cost: 1cr) — Calculate characteristic polynomial coefficients for a square matrix. - [Cholesky Decomposition Calculator](https://api.miniwebtool.com/tools/cholesky-decomposition-calculator.md) (slug: `cholesky-decomposition-calculator`, category: Math · Linear Algebra, cost: 1cr) — Decompose a symmetric positive-definite matrix into A = L L^T. - [Column Space Calculator](https://api.miniwebtool.com/tools/column-space-calculator.md) (slug: `column-space-calculator`, category: Math · Linear Algebra, cost: 1cr) — Find matrix pivot columns, rank, nullity, RREF, and a column-space basis. - [Cramer's Rule Calculator](https://api.miniwebtool.com/tools/cramer-s-rule-calculator.md) (slug: `cramer-s-rule-calculator`, category: Math · Linear Algebra, cost: 1cr) — Solve 2x2 or 3x3 linear systems with Cramer's rule. - [Cross Product Calculator](https://api.miniwebtool.com/tools/cross-product-calculator.md) (slug: `cross-product-calculator`, category: Math · Linear Algebra, cost: 1cr) — Calculate the 3D cross product, magnitude, areas, and angle. - [Determinant Calculator](https://api.miniwebtool.com/tools/determinant-calculator.md) (slug: `determinant-calculator`, category: Math · Linear Algebra, cost: 1cr) — Calculate the determinant, trace, rank, and invertibility of a square matrix. - [Dot Product Calculator](https://api.miniwebtool.com/tools/dot-product-calculator.md) (slug: `dot-product-calculator`, category: Math · Linear Algebra, cost: 1cr) — Calculate the dot product, magnitudes, angle, and vector projection. - [Eigenvalue and Eigenvector Calculator](https://api.miniwebtool.com/tools/eigenvalue-eigenvector-calculator.md) (slug: `eigenvalue-eigenvector-calculator`, category: Math · Linear Algebra, cost: 1cr) — Eigenvalues and eigenvectors of 2x2 and 3x3 matrices, exact when rational, complex included. - [Gram-Schmidt Calculator](https://api.miniwebtool.com/tools/gram-schmidt-calculator.md) (slug: `gram-schmidt-calculator`, category: Math · Linear Algebra, cost: 1cr) — Orthogonalize 2-10 vectors (dimension 2-10): exact orthogonal basis plus orthonormal vectors. - [Jordan Normal Form Calculator](https://api.miniwebtool.com/tools/jordan-normal-form-calculator.md) (slug: `jordan-normal-form-calculator`, category: Math · Linear Algebra, cost: 1cr) — Jordan normal form of a matrix with rational eigenvalues, with block sizes from the nullities of (A-lambda I)^k. - [Matrix Diagonalization Calculator](https://api.miniwebtool.com/tools/matrix-diagonalization-calculator.md) (slug: `matrix-diagonalization-calculator`, category: Math · Linear Algebra, cost: 1cr) — Diagonalise a 2x2 to 4x4 matrix as A = P·D·P-inverse in exact rational arithmetic, reporting defective matrices. - [Matrix Exponential Calculator](https://api.miniwebtool.com/tools/matrix-exponential-calculator.md) (slug: `matrix-exponential-calculator`, category: Math · Linear Algebra, cost: 1cr) — Compute e^(At) by scaling and squaring with a Taylor series, checked against det(e^At) = e^(trace(A)t). - [Matrix Inverse Calculator](https://api.miniwebtool.com/tools/matrix-inverse-calculator.md) (slug: `matrix-inverse-calculator`, category: Math · Linear Algebra, cost: 1cr) — Invert a square matrix (2x2 to 8x8) by exact Gauss-Jordan elimination, with determinant. - [Matrix LU Decomposition Calculator](https://api.miniwebtool.com/tools/matrix-lu-decomposition-calculator.md) (slug: `matrix-lu-decomposition-calculator`, category: Math · Linear Algebra, cost: 1cr) — Factor a square matrix (2x2 to 8x8) into PA = LU with partial pivoting, exactly. - [Matrix Multiplication Calculator](https://api.miniwebtool.com/tools/matrix-multiplication-calculator.md) (slug: `matrix-multiplication-calculator`, category: Math · Linear Algebra, cost: 1cr) — Multiply two matrices (up to 10x10) with exact fraction arithmetic. - [Matrix Power Calculator](https://api.miniwebtool.com/tools/matrix-power-calculator.md) (slug: `matrix-power-calculator`, category: Math · Linear Algebra, cost: 1cr) — Raise a square matrix (up to 6x6) to any integer power from -10 to 20, exactly. - [Matrix Rank Calculator](https://api.miniwebtool.com/tools/matrix-rank-calculator.md) (slug: `matrix-rank-calculator`, category: Math · Linear Algebra, cost: 1cr) — Rank, nullity, pivot and free columns of a matrix (up to 10x10) via exact row reduction. - [Matrix Trace Calculator](https://api.miniwebtool.com/tools/matrix-trace-calculator.md) (slug: `matrix-trace-calculator`, category: Math · Linear Algebra, cost: 1cr) — Calculate the trace and diagonal details of a square matrix. - [Null Space Calculator](https://api.miniwebtool.com/tools/null-space-calculator.md) (slug: `null-space-calculator`, category: Math · Linear Algebra, cost: 1cr) — Kernel basis vectors of a matrix (up to 8x8) via exact RREF, with verification. - [RREF Calculator (Row Echelon Form)](https://api.miniwebtool.com/tools/rref-calculator-row-echelon-form.md) (slug: `rref-calculator-row-echelon-form`, category: Math · Linear Algebra, cost: 1cr) — Reduced row echelon form (up to 10x10) with rank, pivots, and augmented-system analysis. - [Unit Vector Calculator](https://api.miniwebtool.com/tools/unit-vector-calculator.md) (slug: `unit-vector-calculator`, category: Math · Linear Algebra, cost: 1cr) — Normalize a vector and return its unit vector. - [Vector Magnitude Calculator](https://api.miniwebtool.com/tools/vector-magnitude-calculator.md) (slug: `vector-magnitude-calculator`, category: Math · Linear Algebra, cost: 1cr) — Calculate the Euclidean magnitude and unit vector for any vector. - [Vector Projection Calculator](https://api.miniwebtool.com/tools/vector-projection-calculator.md) (slug: `vector-projection-calculator`, category: Math · Linear Algebra, cost: 1cr) — Project one vector onto another and compute the orthogonal component. - [Log Base 10 Calculator](https://api.miniwebtool.com/tools/log-base-10-calculator.md) (slug: `log-base-10-calculator`, category: Math · Logarithms, cost: 1cr) — Calculate common logarithms with bounds and an antilog check. - [Log Base 2 Calculator](https://api.miniwebtool.com/tools/log-base-2-calculator.md) (slug: `log-base-2-calculator`, category: Math · Logarithms, cost: 1cr) — Calculate binary logarithms and detect exact powers of two. - [Log Calculator](https://api.miniwebtool.com/tools/log-calculator.md) (slug: `log-calculator`, category: Math · Logarithms, cost: 1cr) — Logarithm of x in base 10, e, 2, or any custom base, with all three standard logs for comparison. - [Natural Log Calculator](https://api.miniwebtool.com/tools/natural-log-calculator.md) (slug: `natural-log-calculator`, category: Math · Logarithms, cost: 1cr) — ln(x) with log10, log2, the derivative 1/x, and e^x, flagging exact powers of e. - [Boolean Algebra Simplifier](https://api.miniwebtool.com/tools/boolean-algebra-simplifier.md) (slug: `boolean-algebra-simplifier`, category: Math · Logic, cost: 1cr) — Simplify a boolean expression to its minimal sum-of-products or product-of-sums form, with canonical forms, prime implicants, and literal savings. - [Karnaugh Map (K-Map) Solver](https://api.miniwebtool.com/tools/karnaugh-map-k-map-solver.md) (slug: `karnaugh-map-k-map-solver`, category: Math · Logic, cost: 1cr) — Minimise 2-5 variable boolean functions from minterms, maxterms, or a truth table with Quine-McCluskey, returning prime implicants and the Gray-coded K-map grid. - [Truth Table Generator](https://api.miniwebtool.com/tools/truth-table-generator.md) (slug: `truth-table-generator`, category: Math · Logic, cost: 1cr) — Generate truth tables for small boolean logic expressions. - [Rounding Calculator](https://api.miniwebtool.com/tools/rounding-calculator.md) (slug: `rounding-calculator`, category: Math · Number Formatting, cost: 1cr) — Round to decimal places, significant figures, or the nearest multiple with 6 rounding methods compared. - [Significant Figures Calculator](https://api.miniwebtool.com/tools/significant-figures-calculator.md) (slug: `significant-figures-calculator`, category: Math · Number Formatting, cost: 1cr) — Count, round, and apply arithmetic rules for significant figures. - [Base Converter](https://api.miniwebtool.com/tools/base-converter.md) (slug: `base-converter`, category: Math · Number Systems, cost: 1cr) — Convert integers between bases 2 through 36. - [Base-N Calculator](https://api.miniwebtool.com/tools/base-n-calculator.md) (slug: `base-n-calculator`, category: Math · Number Systems, cost: 1cr) — Convert an integer from any base 2 through 36 to every other base. - [BCD to Binary Converter](https://api.miniwebtool.com/tools/bcd-to-binary-converter.md) (slug: `bcd-to-binary-converter`, category: Math · Number Systems, cost: 1cr) — Convert 8421 BCD nibbles to decimal and binary. - [BCD to Decimal Converter](https://api.miniwebtool.com/tools/bcd-to-decimal-converter.md) (slug: `bcd-to-decimal-converter`, category: Math · Number Systems, cost: 1cr) — Convert binary-coded decimal nibbles to a decimal integer. - [BCD to Hex Converter](https://api.miniwebtool.com/tools/bcd-to-hex-converter.md) (slug: `bcd-to-hex-converter`, category: Math · Number Systems, cost: 1cr) — Convert BCD to hexadecimal or hexadecimal to BCD. - [Binary Calculator](https://api.miniwebtool.com/tools/binary-calculator.md) (slug: `binary-calculator`, category: Math · Number Systems, cost: 1cr) — Run binary arithmetic and bitwise operations. - [Binary Converter](https://api.miniwebtool.com/tools/binary-converter.md) (slug: `binary-converter`, category: Math · Number Systems, cost: 1cr) — Convert a binary number to decimal, hexadecimal, octal, or any base from 2 to 36. - [Binary to BCD Converter](https://api.miniwebtool.com/tools/binary-to-bcd-converter.md) (slug: `binary-to-bcd-converter`, category: Math · Number Systems, cost: 1cr) — Convert an integer binary value to binary-coded decimal. - [Binary to Decimal Converter](https://api.miniwebtool.com/tools/binary-to-decimal-converter.md) (slug: `binary-to-decimal-converter`, category: Math · Number Systems, cost: 1cr) — Convert a binary number to decimal, hexadecimal, and octal. - [Binary to Gray Code Converter](https://api.miniwebtool.com/tools/binary-to-gray-code-converter.md) (slug: `binary-to-gray-code-converter`, category: Math · Number Systems, cost: 1cr) — Convert an integer binary value to Gray code. - [Binary to Hex Converter](https://api.miniwebtool.com/tools/binary-to-hex-converter.md) (slug: `binary-to-hex-converter`, category: Math · Number Systems, cost: 1cr) — Convert a binary number to hexadecimal with nibble grouping. - [Binary to Octal Converter](https://api.miniwebtool.com/tools/binary-to-octal-converter.md) (slug: `binary-to-octal-converter`, category: Math · Number Systems, cost: 1cr) — Convert a binary number to octal using 3-bit grouping. - [Decimal to BCD Converter](https://api.miniwebtool.com/tools/decimal-to-bcd-converter.md) (slug: `decimal-to-bcd-converter`, category: Math · Number Systems, cost: 1cr) — Convert a decimal integer to Binary-Coded Decimal (4 bits per digit), with a plain-binary comparison. - [Decimal to Binary Converter](https://api.miniwebtool.com/tools/decimal-to-binary-converter.md) (slug: `decimal-to-binary-converter`, category: Math · Number Systems, cost: 1cr) — Convert a decimal integer to binary with grouped bits and division steps. - [Decimal to Hex Converter](https://api.miniwebtool.com/tools/decimal-to-hex-converter.md) (slug: `decimal-to-hex-converter`, category: Math · Number Systems, cost: 1cr) — Convert a decimal integer to hexadecimal with conversion steps. - [Decimal to Octal Converter](https://api.miniwebtool.com/tools/decimal-to-octal-converter.md) (slug: `decimal-to-octal-converter`, category: Math · Number Systems, cost: 1cr) — Convert a base-10 integer to octal with division steps. - [Decimal to Scientific Notation Converter](https://api.miniwebtool.com/tools/decimal-to-scientific-notation-converter.md) (slug: `decimal-to-scientific-notation-converter`, category: Math · Number Systems, cost: 1cr) — Convert decimal numbers to scientific, E, and engineering notation. - [Gray Code to Binary Converter](https://api.miniwebtool.com/tools/gray-code-to-binary-converter.md) (slug: `gray-code-to-binary-converter`, category: Math · Number Systems, cost: 1cr) — Convert Gray code to ordinary binary with XOR steps. - [Hex Converter](https://api.miniwebtool.com/tools/hex-converter.md) (slug: `hex-converter`, category: Math · Number Systems, cost: 1cr) — Convert integers between hexadecimal, decimal, binary, and octal. - [Hex to BCD Converter](https://api.miniwebtool.com/tools/hex-to-bcd-converter.md) (slug: `hex-to-bcd-converter`, category: Math · Number Systems, cost: 1cr) — Convert a hexadecimal integer to binary-coded decimal. - [Hex to Binary Converter](https://api.miniwebtool.com/tools/hex-to-binary-converter.md) (slug: `hex-to-binary-converter`, category: Math · Number Systems, cost: 1cr) — Convert a hexadecimal integer to binary. - [Hex to Decimal Converter](https://api.miniwebtool.com/tools/hex-to-decimal-converter.md) (slug: `hex-to-decimal-converter`, category: Math · Number Systems, cost: 1cr) — Convert a hexadecimal integer to decimal with digit breakdown. - [Hex to Octal Converter](https://api.miniwebtool.com/tools/hex-to-octal-converter.md) (slug: `hex-to-octal-converter`, category: Math · Number Systems, cost: 1cr) — Convert a hexadecimal integer to octal through binary grouping. - [Octal Converter](https://api.miniwebtool.com/tools/octal-converter.md) (slug: `octal-converter`, category: Math · Number Systems, cost: 1cr) — Convert non-negative integers between octal, decimal, binary, and hex. - [Octal to Binary Converter](https://api.miniwebtool.com/tools/octal-to-binary-converter.md) (slug: `octal-to-binary-converter`, category: Math · Number Systems, cost: 1cr) — Convert an octal integer to binary with per-digit mapping. - [Octal to Decimal Converter](https://api.miniwebtool.com/tools/octal-to-decimal-converter.md) (slug: `octal-to-decimal-converter`, category: Math · Number Systems, cost: 1cr) — Convert an octal integer to decimal with positional breakdown. - [Ratio to Percentage Calculator](https://api.miniwebtool.com/tools/ratio-to-percentage-calculator.md) (slug: `ratio-to-percentage-calculator`, category: Math · Number Systems, cost: 1cr) — Convert ratios, fractions, or decimal divisions to percentages. - [Roman Numerals Converter](https://api.miniwebtool.com/tools/roman-numerals-converter.md) (slug: `roman-numerals-converter`, category: Math · Number Systems, cost: 1cr) — Convert between Roman numerals and Arabic numbers (1-3999) with canonical-form checking. - [Scientific Notation to Decimal Converter](https://api.miniwebtool.com/tools/scientific-notation-to-decimal-converter.md) (slug: `scientific-notation-to-decimal-converter`, category: Math · Number Systems, cost: 1cr) — Convert scientific notation to ordinary decimal notation. - [Amicable Number Checker](https://api.miniwebtool.com/tools/amicable-number-checker.md) (slug: `amicable-number-checker`, category: Math · Number Theory, cost: 1cr) — Check whether two integers form an amicable pair, or find the partner of a single number. - [Chinese Remainder Theorem Calculator](https://api.miniwebtool.com/tools/chinese-remainder-theorem-calculator.md) (slug: `chinese-remainder-theorem-calculator`, category: Math · Number Theory, cost: 1cr) — Solve a system of simultaneous congruences with pairwise coprime moduli using the CRT. - [Continued Fraction Calculator](https://api.miniwebtool.com/tools/continued-fraction-calculator.md) (slug: `continued-fraction-calculator`, category: Math · Number Theory, cost: 1cr) — Expand a decimal, fraction, or square root into a continued fraction with convergents. - [Digital Root Calculator](https://api.miniwebtool.com/tools/digital-root-calculator.md) (slug: `digital-root-calculator`, category: Math · Number Theory, cost: 1cr) — Repeated digit sum or product to a single digit in base 2, 8, 10, or 16, with persistence and the casting-out-nines formula check. - [Divisibility Test Calculator](https://api.miniwebtool.com/tools/divisibility-test-calculator.md) (slug: `divisibility-test-calculator`, category: Math · Number Theory, cost: 1cr) — Test a number against common divisors, primes, or custom divisors with rule explanations. - [Egyptian Fraction Calculator](https://api.miniwebtool.com/tools/egyptian-fraction-calculator.md) (slug: `egyptian-fraction-calculator`, category: Math · Number Theory, cost: 1cr) — Express a proper fraction as a sum of distinct unit fractions using the greedy Fibonacci-Sylvester algorithm. - [Euler's Totient Function Calculator](https://api.miniwebtool.com/tools/euler-s-totient-function-calculator.md) (slug: `euler-s-totient-function-calculator`, category: Math · Number Theory, cost: 1cr) — Calculate Euler's totient function phi(n) with its prime factorization. - [Extended Euclidean Algorithm Calculator](https://api.miniwebtool.com/tools/extended-euclidean-algorithm-calculator.md) (slug: `extended-euclidean-algorithm-calculator`, category: Math · Number Theory, cost: 1cr) — Find the GCD of two integers and Bezout coefficients via the extended Euclidean algorithm. - [Factor Calculator](https://api.miniwebtool.com/tools/factor-calculator.md) (slug: `factor-calculator`, category: Math · Number Theory, cost: 1cr) — List all factors and factor pairs of a number up to 10^12 with its prime factorization. - [Factorial Calculator](https://api.miniwebtool.com/tools/factorial-calculator.md) (slug: `factorial-calculator`, category: Math · Number Theory, cost: 1cr) — Calculate factorial metadata, exact values for bounded inputs, and scientific notation. - [Fibonacci Number Checker](https://api.miniwebtool.com/tools/fibonacci-number-checker.md) (slug: `fibonacci-number-checker`, category: Math · Number Theory, cost: 1cr) — Check whether a non-negative integer is in the Fibonacci sequence. - [First n Prime Numbers](https://api.miniwebtool.com/tools/first-n-prime-numbers.md) (slug: `first-n-prime-numbers`, category: Math · Number Theory, cost: 1cr) — Generate the first n primes (up to 10,000) with twin-prime pairs and gap statistics. - [Goldbach Conjecture Verifier](https://api.miniwebtool.com/tools/goldbach-conjecture-verifier.md) (slug: `goldbach-conjecture-verifier`, category: Math · Number Theory, cost: 1cr) — Verify an even integer by finding prime pairs that sum to it. - [Greatest Common Factor Calculator](https://api.miniwebtool.com/tools/greatest-common-factor-calculator.md) (slug: `greatest-common-factor-calculator`, category: Math · Number Theory, cost: 1cr) — Find the GCF of up to 15 numbers with prime factorizations and all common factors. - [Prime Number Checker](https://api.miniwebtool.com/tools/is-it-a-prime-number.md) (slug: `is-it-a-prime-number`, category: Math · Number Theory, cost: 1cr) — Check whether a number up to 10^15 is prime, with factorization and the 5 nearest primes either side. - [Least Common Multiple Calculator](https://api.miniwebtool.com/tools/least-common-multiple-calculator.md) (slug: `least-common-multiple-calculator`, category: Math · Number Theory, cost: 1cr) — Find the LCM of up to 15 numbers with prime factorizations and the GCF cross-check. - [List of Prime Numbers](https://api.miniwebtool.com/tools/list-of-prime-numbers.md) (slug: `list-of-prime-numbers`, category: Math · Number Theory, cost: 1cr) — List every prime from 2 up to a limit (max 10,000) with density and twin-prime statistics. - [Mersenne Prime Checker](https://api.miniwebtool.com/tools/mersenne-prime-checker.md) (slug: `mersenne-prime-checker`, category: Math · Number Theory, cost: 1cr) — Check whether 2^p - 1 is prime for bounded exponents. - [Möbius Function Calculator](https://api.miniwebtool.com/tools/mobius-function-calculator.md) (slug: `mobius-function-calculator`, category: Math · Number Theory, cost: 1cr) — Evaluate the Möbius function μ(n) from the prime factorization of n. - [Modular Exponentiation Calculator](https://api.miniwebtool.com/tools/modular-exponentiation-calculator.md) (slug: `modular-exponentiation-calculator`, category: Math · Number Theory, cost: 1cr) — Compute base^exponent mod modulus efficiently with binary square-and-multiply statistics. - [Partition Function Calculator](https://api.miniwebtool.com/tools/partition-function-calculator.md) (slug: `partition-function-calculator`, category: Math · Number Theory, cost: 1cr) — Calculate the integer partition number p(n) for bounded n. - [Perfect Number Checker](https://api.miniwebtool.com/tools/perfect-number-checker.md) (slug: `perfect-number-checker`, category: Math · Number Theory, cost: 1cr) — Classify a positive integer as perfect, abundant, or deficient. - [Prime Factor Calculator](https://api.miniwebtool.com/tools/prime-factor-calculator.md) (slug: `prime-factor-calculator`, category: Math · Number Theory, cost: 1cr) — Prime factors plus divisor sum, Euler's totient, and abundant/deficient/perfect classification. - [Prime Factorization Calculator](https://api.miniwebtool.com/tools/prime-factorization-calculator.md) (slug: `prime-factorization-calculator`, category: Math · Number Theory, cost: 1cr) — Factor a number up to 10^15 into primes with exponent form and divisor count. - [Primitive Root Calculator](https://api.miniwebtool.com/tools/primitive-root-calculator.md) (slug: `primitive-root-calculator`, category: Math · Number Theory, cost: 1cr) — Test whether primitive roots exist modulo n and list them with φ(n). - [Twin Prime Finder](https://api.miniwebtool.com/tools/twin-prime-finder.md) (slug: `twin-prime-finder`, category: Math · Number Theory, cost: 1cr) — Find twin prime pairs up to a bounded integer limit. - [Scientific Notation Calculator](https://api.miniwebtool.com/tools/scientific-notation-calculator.md) (slug: `scientific-notation-calculator`, category: Math · Numbers, cost: 1cr) — Convert a number into scientific, E and engineering notation. - [Destiny Number Calculator](https://api.miniwebtool.com/tools/destiny-number-calculator.md) (slug: `destiny-number-calculator`, category: Math · Numerology, cost: 1cr) — Calculate a Pythagorean numerology destiny number from a name. - [Overtime Pay Calculator](https://api.miniwebtool.com/tools/overtime-pay-calculator.md) (slug: `overtime-pay-calculator`, category: Math · Payroll, cost: 1cr) — Calculate regular pay, overtime pay, gross pay, and effective hourly rate. - [Decimal to Percent Converter](https://api.miniwebtool.com/tools/decimal-to-percent-converter.md) (slug: `decimal-to-percent-converter`, category: Math · Percentage, cost: 1cr) — Convert one or more decimal numbers to percentages. - [Percent to Decimal Converter](https://api.miniwebtool.com/tools/percent-to-decimal-converter.md) (slug: `percent-to-decimal-converter`, category: Math · Percentage, cost: 1cr) — Convert one or many percentages to decimals (divide by 100), batch input supported. - [Percentage Calculator](https://api.miniwebtool.com/tools/percentage-calculator.md) (slug: `percentage-calculator`, category: Math · Percentage, cost: 1cr) — Six percentage operations behind one endpoint, selected by mode. - [Percentage Change Calculator](https://api.miniwebtool.com/tools/percentage-change-calculator.md) (slug: `percentage-change-calculator`, category: Math · Percentage, cost: 1cr) — Calculate percentage change between two values with chart-ready before-and-after data. - [Percentage Decrease Calculator](https://api.miniwebtool.com/tools/percentage-decrease-calculator.md) (slug: `percentage-decrease-calculator`, category: Math · Percentage, cost: 1cr) — Find a percentage decrease, apply one to a value, or recover the original value before a decrease. - [Percentage Error Calculator](https://api.miniwebtool.com/tools/percentage-error-calculator.md) (slug: `percentage-error-calculator`, category: Math · Percentage, cost: 1cr) — Calculate percent error between estimated and actual values. - [Percentage Increase Calculator](https://api.miniwebtool.com/tools/percentage-increase-calculator.md) (slug: `percentage-increase-calculator`, category: Math · Percentage, cost: 1cr) — Calculate the absolute and percentage increase or decrease between two positive values. - [Percent Growth Rate Calculator](https://api.miniwebtool.com/tools/percent-growth-rate-calculator.md) (slug: `percent-growth-rate-calculator`, category: Math · Percentages, cost: 1cr) — Calculate total percent change, simple annual growth, CAGR, and multiplier. - [Acceleration Calculator](https://api.miniwebtool.com/tools/acceleration-calculator.md) (slug: `acceleration-calculator`, category: Math · Physics, cost: 1cr) — Calculate acceleration from velocity change, distance, force, centripetal motion, or free fall. - [Boxing Punch Power Calculator](https://api.miniwebtool.com/tools/boxing-punch-power-calculator.md) (slug: `boxing-punch-power-calculator`, category: Math · Physics, cost: 1cr) — Estimate punch force, kinetic energy, and power from speed and effective mass. - [Headlight Beam Distance Calculator](https://api.miniwebtool.com/tools/headlight-beam-distance-calculator.md) (slug: `headlight-beam-distance-calculator`, category: Math · Physics, cost: 1cr) — Calculate headlight beam road reach from mounting height and aim angle. - [Horsepower Calculator](https://api.miniwebtool.com/tools/horsepower-calculator.md) (slug: `horsepower-calculator`, category: Math · Physics, cost: 1cr) — Solve horsepower, torque, or RPM and return common power conversions. - [Penny Drop Impact Calculator](https://api.miniwebtool.com/tools/penny-drop-impact-calculator.md) (slug: `penny-drop-impact-calculator`, category: Math · Physics, cost: 1cr) — Estimate idealized penny impact velocity, energy, momentum, and force. - [Speed Calculator](https://api.miniwebtool.com/tools/speed-calculator.md) (slug: `speed-calculator`, category: Math · Physics, cost: 1cr) — Calculate speed from distance and time with common speed unit conversions. - [Parking Ratio Calculator](https://api.miniwebtool.com/tools/parking-ratio-calculator.md) (slug: `parking-ratio-calculator`, category: Math · Planning, cost: 1cr) — Estimate parking spaces from common land-use parking ratios. - [Bayes' Theorem Calculator](https://api.miniwebtool.com/tools/bayes-theorem-calculator.md) (slug: `bayes-theorem-calculator`, category: Math · Probability, cost: 1cr) — Calculate the posterior probability with Bayes' theorem, likelihood ratio, and natural frequencies. - [Beta Distribution Calculator](https://api.miniwebtool.com/tools/beta-distribution-calculator.md) (slug: `beta-distribution-calculator`, category: Math · Probability, cost: 1cr) — Beta distribution density, cumulative probability, quantiles, and shape statistics. - [Binomial Probability Distribution Calculator](https://api.miniwebtool.com/tools/binomial-probability-distribution-calculator.md) (slug: `binomial-probability-distribution-calculator`, category: Math · Probability, cost: 1cr) — Calculate exact and cumulative binomial probabilities. - [Dice Roll Probability Calculator](https://api.miniwebtool.com/tools/dice-roll-probability-calculator.md) (slug: `dice-roll-probability-calculator`, category: Math · Probability, cost: 1cr) — Calculate exact probability metrics for sums of identical dice. - [Exponential Distribution Calculator](https://api.miniwebtool.com/tools/exponential-distribution-calculator.md) (slug: `exponential-distribution-calculator`, category: Math · Probability, cost: 1cr) — Exponential distribution probabilities (P(X<=x), P(X>x), between) plus mean, median, and variance. - [Gacha Pity Calculator](https://api.miniwebtool.com/tools/gacha-pity-calculator.md) (slug: `gacha-pity-calculator`, category: Math · Probability, cost: 1cr) — Estimate pull success probability with soft and hard pity rates. - [Geometric Distribution Calculator](https://api.miniwebtool.com/tools/geometric-distribution-calculator.md) (slug: `geometric-distribution-calculator`, category: Math · Probability, cost: 1cr) — Compute PMF, CDF, survival, mean, and variance for a geometric distribution. - [Hypergeometric Distribution Calculator](https://api.miniwebtool.com/tools/hypergeometric-distribution-calculator.md) (slug: `hypergeometric-distribution-calculator`, category: Math · Probability, cost: 1cr) — Calculate exact and cumulative hypergeometric probabilities. - [Loot Drop Probability Calculator](https://api.miniwebtool.com/tools/loot-drop-probability-calculator.md) (slug: `loot-drop-probability-calculator`, category: Math · Probability, cost: 1cr) — Calculate loot drop odds across repeated independent attempts. - [Negative Binomial Distribution Calculator](https://api.miniwebtool.com/tools/negative-binomial-distribution-calculator.md) (slug: `negative-binomial-distribution-calculator`, category: Math · Probability, cost: 1cr) — Negative binomial PMF and cumulative probabilities in failures or total-trials parametrization. - [Normal Distribution Calculator](https://api.miniwebtool.com/tools/normal-distribution-calculator.md) (slug: `normal-distribution-calculator`, category: Math · Probability, cost: 1cr) — Normal probabilities: left/right tail, between two values, or inverse lookup, with z-scores and PDF. - [Poisson Distribution Calculator](https://api.miniwebtool.com/tools/poisson-distribution-calculator.md) (slug: `poisson-distribution-calculator`, category: Math · Probability, cost: 1cr) — Calculate Poisson PMF, CDF, and tail probabilities. - [Probability Calculator](https://api.miniwebtool.com/tools/probability-calculator.md) (slug: `probability-calculator`, category: Math · Probability, cost: 1cr) — Compute basic, conditional, Bayes, and complement probabilities. - [Aspect Ratio Calculator](https://api.miniwebtool.com/tools/aspect-ratio-calculator.md) (slug: `aspect-ratio-calculator`, category: Math · Ratios, cost: 1cr) — Simplify dimensions to a ratio, derive dimensions from a ratio, or resize proportionally. - [Proportion Calculator](https://api.miniwebtool.com/tools/proportion-calculator.md) (slug: `proportion-calculator`, category: Math · Ratios, cost: 1cr) — Solve or verify a proportion a/b = c/d from three or four values. - [Ratio Calculator](https://api.miniwebtool.com/tools/ratio-calculator.md) (slug: `ratio-calculator`, category: Math · Ratios, cost: 1cr) — Solve a:b = c:d proportions, simplify or scale ratios, and generate equivalent ratio tables. - [Unit Rate Calculator](https://api.miniwebtool.com/tools/unit-rate-calculator.md) (slug: `unit-rate-calculator`, category: Math · Ratios, cost: 1cr) — Calculate a unit rate or compare two unit rates. - [Catalan Number Generator](https://api.miniwebtool.com/tools/catalan-number-generator.md) (slug: `catalan-number-generator`, category: Math · Sequence Tools, cost: 1cr) — Calculate the nth Catalan number and nearby sequence values. - [Collatz Conjecture Calculator](https://api.miniwebtool.com/tools/collatz-conjecture-calculator.md) (slug: `collatz-conjecture-calculator`, category: Math · Sequence Tools, cost: 1cr) — Generate and analyze the deterministic Collatz hailstone sequence. - [Arithmetic Sequence Calculator](https://api.miniwebtool.com/tools/arithmetic-sequence-calculator.md) (slug: `arithmetic-sequence-calculator`, category: Math · Sequences, cost: 1cr) — Calculate the nth term and partial sum of an arithmetic sequence. - [Cube Numbers List](https://api.miniwebtool.com/tools/cube-numbers-list.md) (slug: `cube-numbers-list`, category: Math · Sequences, cost: 1cr) — List cube numbers n³ for bases up to 1000 with sums and prime-base counts. - [Geometric Sequence Calculator](https://api.miniwebtool.com/tools/geometric-sequence-calculator.md) (slug: `geometric-sequence-calculator`, category: Math · Sequences, cost: 1cr) — Calculate nth term, partial sum, and sample terms for a geometric sequence. - [Happy Number Calculator](https://api.miniwebtool.com/tools/happy-number-calculator.md) (slug: `happy-number-calculator`, category: Math · Sequences, cost: 1cr) — Check whether a number is happy or list happy numbers up to a limit. - [List of Fibonacci Numbers](https://api.miniwebtool.com/tools/list-of-fibonacci-numbers.md) (slug: `list-of-fibonacci-numbers`, category: Math · Sequences, cost: 1cr) — Generate Fibonacci numbers by count, maximum value, or index range. - [Number Pattern Finder](https://api.miniwebtool.com/tools/number-pattern-finder.md) (slug: `number-pattern-finder`, category: Math · Sequences, cost: 1cr) — Detect arithmetic, geometric or quadratic patterns and predict the next value. - [Pascal's Triangle Generator](https://api.miniwebtool.com/tools/pascal-s-triangle-generator.md) (slug: `pascal-s-triangle-generator`, category: Math · Sequences, cost: 1cr) — Generate Pascal's triangle rows and related row sums. - [Sequence Calculator](https://api.miniwebtool.com/tools/sequence-calculator.md) (slug: `sequence-calculator`, category: Math · Sequences, cost: 1cr) — Generate arithmetic, geometric, or Fibonacci-style sequence terms and sums. - [Skip Counting Generator](https://api.miniwebtool.com/tools/skip-counting-generator.md) (slug: `skip-counting-generator`, category: Math · Sequences, cost: 1cr) — Generate an arithmetic skip-counting sequence. - [Square Numbers List](https://api.miniwebtool.com/tools/square-numbers-list.md) (slug: `square-numbers-list`, category: Math · Sequences, cost: 1cr) — List square numbers, find squares in a range, or check a perfect square. - [Sum of Cubes Calculator](https://api.miniwebtool.com/tools/sum-of-cubes-calculator.md) (slug: `sum-of-cubes-calculator`, category: Math · Sequences, cost: 1cr) — Calculate 1^3 + 2^3 + ... + n^3. - [Sum of Positive Integers Calculator](https://api.miniwebtool.com/tools/sum-of-positive-integers-calculator.md) (slug: `sum-of-positive-integers-calculator`, category: Math · Sequences, cost: 1cr) — Sum consecutive integers n1..n2 exactly with Gauss's pairing formula. - [Sum of Squares Calculator](https://api.miniwebtool.com/tools/sum-of-squares-calculator.md) (slug: `sum-of-squares-calculator`, category: Math · Sequences, cost: 1cr) — Calculate 1^2 + 2^2 + ... + n^2. - [Inclusion Exclusion Calculator](https://api.miniwebtool.com/tools/inclusion-exclusion-calculator.md) (slug: `inclusion-exclusion-calculator`, category: Math · Set Theory, cost: 1cr) — Apply inclusion-exclusion for one, two, or three finite sets. - [Set Theory Calculator](https://api.miniwebtool.com/tools/set-theory-calculator.md) (slug: `set-theory-calculator`, category: Math · Set Theory, cost: 1cr) — Perform common finite set operations. - [Beta Function Calculator](https://api.miniwebtool.com/tools/beta-function-calculator.md) (slug: `beta-function-calculator`, category: Math · Special Functions, cost: 1cr) — Calculate the Euler beta function B(x, y) via the gamma function relationship. - [Exponential Integral Calculator](https://api.miniwebtool.com/tools/exponential-integral-calculator.md) (slug: `exponential-integral-calculator`, category: Math · Special Functions, cost: 1cr) — Evaluate E1(x), Ei(x), the generalised E_n(x) and the logarithmic integral li(x). - [Bike Gear Ratio Calculator](https://api.miniwebtool.com/tools/bike-gear-ratio-calculator.md) (slug: `bike-gear-ratio-calculator`, category: Math · Sports, cost: 1cr) — Calculate bicycle gear ratio, gear inches, rollout, gain ratio, and speed. - [Bowling Score Calculator](https://api.miniwebtool.com/tools/bowling-score-calculator.md) (slug: `bowling-score-calculator`, category: Math · Sports, cost: 1cr) — Score a ten-pin bowling game from roll values. - [Cricket Run Rate Calculator](https://api.miniwebtool.com/tools/cricket-run-rate-calculator.md) (slug: `cricket-run-rate-calculator`, category: Math · Sports, cost: 1cr) — Calculate current, projected, and required cricket run rates from cricket over notation. - [Usage Rate Calculator](https://api.miniwebtool.com/tools/usage-rate-calculator.md) (slug: `usage-rate-calculator`, category: Math · Sports, cost: 1cr) — Calculate basketball usage rate from player and team shot, free throw, turnover, and minute stats. - [A/B Test Sample Size Calculator](https://api.miniwebtool.com/tools/a-b-test-sample-size-calculator.md) (slug: `a-b-test-sample-size-calculator`, category: Math · Statistics, cost: 1cr) — Size an A/B test from baseline rate, minimum detectable effect, significance, and power. - [A/B Test Significance Calculator](https://api.miniwebtool.com/tools/a-b-test-significance-calculator.md) (slug: `a-b-test-significance-calculator`, category: Math · Statistics, cost: 1cr) — Test whether an A/B conversion-rate difference is significant, with lift, z score, p-value, and intervals. - [ANOVA Calculator](https://api.miniwebtool.com/tools/anova-calculator.md) (slug: `anova-calculator`, category: Math · Statistics, cost: 1cr) — Run one-way ANOVA with F statistic, p-value, table components, and effect sizes. - [Arithmetic Mean Calculator](https://api.miniwebtool.com/tools/arithmetic-mean-calculator.md) (slug: `arithmetic-mean-calculator`, category: Math · Statistics, cost: 1cr) — Calculate arithmetic mean, median, modes, range, variance, and standard deviation from a number list. - [Average Calculator](https://api.miniwebtool.com/tools/average-calculator.md) (slug: `average-calculator`, category: Math · Statistics, cost: 1cr) — Calculate mean, median, mode, range, variance, and optional weighted average. - [Average Deviation Calculator](https://api.miniwebtool.com/tools/average-deviation-calculator.md) (slug: `average-deviation-calculator`, category: Math · Statistics, cost: 1cr) — Calculate mean and median absolute deviation for a numeric dataset. - [Box and Whisker Plot Maker](https://api.miniwebtool.com/tools/box-and-whisker-plot-maker.md) (slug: `box-and-whisker-plot-maker`, category: Math · Statistics, cost: 1cr) — Compute box plot statistics, whiskers, fences, and outliers. - [Central Limit Theorem Calculator](https://api.miniwebtool.com/tools/central-limit-theorem-calculator.md) (slug: `central-limit-theorem-calculator`, category: Math · Statistics, cost: 1cr) — Sampling-distribution probabilities for the sample mean via the CLT (standard error, z-scores). - [Chi Square Test Calculator](https://api.miniwebtool.com/tools/chi-square-test-calculator.md) (slug: `chi-square-test-calculator`, category: Math · Statistics, cost: 1cr) — Run a chi-square goodness-of-fit test for observed and expected counts. - [Coefficient of Variation Calculator](https://api.miniwebtool.com/tools/coefficient-of-variation-calculator.md) (slug: `coefficient-of-variation-calculator`, category: Math · Statistics, cost: 1cr) — Calculate coefficient of variation from sample or population standard deviation. - [Cohen's d Calculator](https://api.miniwebtool.com/tools/cohens-d-calculator.md) (slug: `cohens-d-calculator`, category: Math · Statistics, cost: 1cr) — Calculate Cohen's d, Hedges' g, overlap, and effect-size interpretation. - [Confidence Interval Calculator](https://api.miniwebtool.com/tools/confidence-interval-calculator.md) (slug: `confidence-interval-calculator`, category: Math · Statistics, cost: 1cr) — Confidence interval for a population mean from raw data or summary statistics, using the t-distribution or the normal distribution. - [Confidence Interval for Proportion Calculator](https://api.miniwebtool.com/tools/confidence-interval-for-proportion-calculator.md) (slug: `confidence-interval-for-proportion-calculator`, category: Math · Statistics, cost: 1cr) — Wald and Wilson score confidence intervals for a proportion at eight confidence levels. - [Contingency Table Calculator](https://api.miniwebtool.com/tools/contingency-table-calculator.md) (slug: `contingency-table-calculator`, category: Math · Statistics, cost: 1cr) — Chi-square test of independence for an r x c contingency table with expected counts, standardized residuals, cell contributions, and Cramer's V. - [Correlation Coefficient Calculator](https://api.miniwebtool.com/tools/correlation-coefficient-calculator.md) (slug: `correlation-coefficient-calculator`, category: Math · Statistics, cost: 1cr) — Calculate Pearson, Spearman, and Kendall correlation coefficients. - [Effect Size Calculator](https://api.miniwebtool.com/tools/effect-size-calculator.md) (slug: `effect-size-calculator`, category: Math · Statistics, cost: 1cr) — Calculate Cohen's d, Hedges' g, Glass's delta, and related effect-size statistics for two groups. - [Entropy Calculator](https://api.miniwebtool.com/tools/entropy-calculator.md) (slug: `entropy-calculator`, category: Math · Statistics, cost: 1cr) — Calculate Shannon entropy of a probability distribution in bits, nats, or dits. - [F-Test / F-Distribution Calculator](https://api.miniwebtool.com/tools/f-test-f-distribution-calculator.md) (slug: `f-test-f-distribution-calculator`, category: Math · Statistics, cost: 1cr) — Compare two variances with an F test, or turn an F statistic into a p-value and critical values. - [Find Minimum and Maximum](https://api.miniwebtool.com/tools/find-minimum-maximum.md) (slug: `find-minimum-maximum`, category: Math · Statistics, cost: 1cr) — Find min, max, range, mean, median, positions, and sorted values for a number list. - [Fisher's Exact Test Calculator](https://api.miniwebtool.com/tools/fisher-s-exact-test-calculator.md) (slug: `fisher-s-exact-test-calculator`, category: Math · Statistics, cost: 1cr) — Exact hypergeometric test for a 2x2 table with one- and two-tailed p-values, odds ratio with confidence interval, relative risk, and expected counts. - [Five Number Summary Calculator](https://api.miniwebtool.com/tools/five-number-summary-calculator.md) (slug: `five-number-summary-calculator`, category: Math · Statistics, cost: 1cr) — Calculate minimum, Q1, median, Q3, maximum, IQR, and outlier fences. - [Geometric Mean Calculator](https://api.miniwebtool.com/tools/geometric-mean-calculator.md) (slug: `geometric-mean-calculator`, category: Math · Statistics, cost: 1cr) — Calculate geometric mean and compare it with arithmetic, harmonic, median, minimum, and maximum values. - [Gini Coefficient Calculator](https://api.miniwebtool.com/tools/gini-coefficient-calculator.md) (slug: `gini-coefficient-calculator`, category: Math · Statistics, cost: 1cr) — Calculate a Gini coefficient and Lorenz curve points from nonnegative data. - [Harmonic Mean Calculator](https://api.miniwebtool.com/tools/harmonic-mean-calculator.md) (slug: `harmonic-mean-calculator`, category: Math · Statistics, cost: 1cr) — Calculate harmonic mean for positive non-zero values with comparison means and reciprocal totals. - [Histogram Maker](https://api.miniwebtool.com/tools/histogram-maker.md) (slug: `histogram-maker`, category: Math · Statistics, cost: 1cr) — Create histogram bin counts and relative frequencies from numeric data. - [Interquartile Range Calculator](https://api.miniwebtool.com/tools/interquartile-range-calculator.md) (slug: `interquartile-range-calculator`, category: Math · Statistics, cost: 1cr) — Calculate IQR, quartiles, and 1.5-IQR outlier fences. - [Kruskal-Wallis Test Calculator](https://api.miniwebtool.com/tools/kruskal-wallis-test-calculator.md) (slug: `kruskal-wallis-test-calculator`, category: Math · Statistics, cost: 1cr) — Run the Kruskal-Wallis H test for several independent groups, with tie correction and rank summaries. - [Linear Regression Calculator](https://api.miniwebtool.com/tools/linear-regression-calculator.md) (slug: `linear-regression-calculator`, category: Math · Statistics, cost: 1cr) — Least-squares line with r, R-squared, standard errors, sums of squares, and optional prediction. - [Mean Absolute Deviation Calculator](https://api.miniwebtool.com/tools/mean-absolute-deviation-calculator.md) (slug: `mean-absolute-deviation-calculator`, category: Math · Statistics, cost: 1cr) — Calculate mean or median absolute deviation for a numeric dataset. - [Mean Calculator](https://api.miniwebtool.com/tools/mean-calculator.md) (slug: `mean-calculator`, category: Math · Statistics, cost: 1cr) — Calculate arithmetic mean and supporting summary statistics. - [Mean Median Mode Calculator](https://api.miniwebtool.com/tools/mean-median-mode-calculator.md) (slug: `mean-median-mode-calculator`, category: Math · Statistics, cost: 1cr) — Calculate mean, median, mode, range, variance, and standard deviation. - [Median Absolute Deviation Calculator](https://api.miniwebtool.com/tools/median-absolute-deviation-calculator.md) (slug: `median-absolute-deviation-calculator`, category: Math · Statistics, cost: 1cr) — Calculate raw and scaled median absolute deviation as a robust spread measure. - [Median Calculator](https://api.miniwebtool.com/tools/median-calculator.md) (slug: `median-calculator`, category: Math · Statistics, cost: 1cr) — Calculate the median, sorted data, quartiles, and range. - [Midrange Calculator](https://api.miniwebtool.com/tools/midrange-calculator.md) (slug: `midrange-calculator`, category: Math · Statistics, cost: 1cr) — Calculate the midpoint between the minimum and maximum of a dataset. - [Mode Calculator](https://api.miniwebtool.com/tools/mode-calculator.md) (slug: `mode-calculator`, category: Math · Statistics, cost: 1cr) — Find the mode or modes and frequency table for a numeric dataset. - [Odds Ratio Calculator](https://api.miniwebtool.com/tools/odds-ratio-calculator.md) (slug: `odds-ratio-calculator`, category: Math · Statistics, cost: 1cr) — Odds ratio with Woolf CI, relative risk, NNT, and Yates-corrected chi-square from a 2x2 table. - [Outlier Calculator](https://api.miniwebtool.com/tools/outlier-calculator.md) (slug: `outlier-calculator`, category: Math · Statistics, cost: 1cr) — Detect IQR outliers and return quartiles, bounds, and counts. - [P-Value Calculator](https://api.miniwebtool.com/tools/p-value-calculator.md) (slug: `p-value-calculator`, category: Math · Statistics, cost: 1cr) — Convert a z, t, chi-square, or F test statistic into a one- or two-tailed p-value with critical values and significance at common alpha levels. - [Percentile Calculator](https://api.miniwebtool.com/tools/percentile-calculator.md) (slug: `percentile-calculator`, category: Math · Statistics, cost: 1cr) — Calculate a percentile value or percentile rank for a numeric dataset. - [Population Variance Calculator](https://api.miniwebtool.com/tools/population-variance-calculator.md) (slug: `population-variance-calculator`, category: Math · Statistics, cost: 1cr) — Calculate population variance and population standard deviation. - [Quartile Calculator](https://api.miniwebtool.com/tools/quartile-calculator.md) (slug: `quartile-calculator`, category: Math · Statistics, cost: 1cr) — Calculate Q1, Q2, Q3, IQR, and outlier fences using a selected quartile method. - [Quartile Deviation Calculator](https://api.miniwebtool.com/tools/quartile-deviation-calculator.md) (slug: `quartile-deviation-calculator`, category: Math · Statistics, cost: 1cr) — Calculate quartile deviation, IQR fences, and outliers for numeric data. - [Range Calculator](https://api.miniwebtool.com/tools/range-calculator.md) (slug: `range-calculator`, category: Math · Statistics, cost: 1cr) — Range (max − min) of a data set with quartiles, IQR, midrange, and a spread rating. - [Relative Risk Calculator](https://api.miniwebtool.com/tools/relative-risk-calculator.md) (slug: `relative-risk-calculator`, category: Math · Statistics, cost: 1cr) — Relative risk with confidence interval, attributable fractions, NNT, and significance test. - [Relative Standard Deviation Calculator](https://api.miniwebtool.com/tools/relative-standard-deviation-calculator.md) (slug: `relative-standard-deviation-calculator`, category: Math · Statistics, cost: 1cr) — Calculate RSD, coefficient of variation, and precision quality for data. - [Root Mean Square Calculator](https://api.miniwebtool.com/tools/root-mean-square-calculator.md) (slug: `root-mean-square-calculator`, category: Math · Statistics, cost: 1cr) — Calculate root mean square for a numeric list. - [Sample Mean Calculator](https://api.miniwebtool.com/tools/sample-mean-calculator.md) (slug: `sample-mean-calculator`, category: Math · Statistics, cost: 1cr) — Calculate sample mean plus core descriptive statistics for a numeric dataset. - [Sample Size Calculator](https://api.miniwebtool.com/tools/sample-size-calculator.md) (slug: `sample-size-calculator`, category: Math · Statistics, cost: 1cr) — Survey sample size from confidence level, margin of error, and optional finite-population correction. - [Sample Standard Deviation Calculator](https://api.miniwebtool.com/tools/sample-standard-deviation-calculator.md) (slug: `sample-standard-deviation-calculator`, category: Math · Statistics, cost: 1cr) — Calculate sample standard deviation and optional z-score outliers. - [Sample Variance Calculator](https://api.miniwebtool.com/tools/sample-variance-calculator.md) (slug: `sample-variance-calculator`, category: Math · Statistics, cost: 1cr) — Calculate sample or population variance from a numeric dataset. - [Spearman Rank Correlation Calculator](https://api.miniwebtool.com/tools/spearman-rank-correlation-calculator.md) (slug: `spearman-rank-correlation-calculator`, category: Math · Statistics, cost: 1cr) — Spearman's rho with average-rank tie handling, tie correction, and t-based significance. - [Standard Deviation Calculator](https://api.miniwebtool.com/tools/standard-deviation-calculator.md) (slug: `standard-deviation-calculator`, category: Math · Statistics, cost: 1cr) — Calculate sample and population standard deviation with quartiles. - [Standard Error Calculator](https://api.miniwebtool.com/tools/standard-error-calculator.md) (slug: `standard-error-calculator`, category: Math · Statistics, cost: 1cr) — Calculate standard error of the mean and a z-based confidence interval. - [Statistics Calculator](https://api.miniwebtool.com/tools/statistics-calculator.md) (slug: `statistics-calculator`, category: Math · Statistics, cost: 1cr) — Calculate descriptive statistics and histogram-ready distribution data from numeric values. - [t-Test Calculator](https://api.miniwebtool.com/tools/t-test-calculator.md) (slug: `t-test-calculator`, category: Math · Statistics, cost: 1cr) — Run one-sample, paired, or independent two-sample t-tests with Welch or pooled variance, p-value, critical value, confidence interval, and Cohen's d. - [Variance Calculator](https://api.miniwebtool.com/tools/variance-calculator.md) (slug: `variance-calculator`, category: Math · Statistics, cost: 1cr) — Calculate sample and population variance with related statistics. - [Weibull Distribution Calculator](https://api.miniwebtool.com/tools/weibull-distribution-calculator.md) (slug: `weibull-distribution-calculator`, category: Math · Statistics, cost: 1cr) — Calculate Weibull PDF/CDF/reliability, moments, and B-life values. - [Weighted Average Calculator](https://api.miniwebtool.com/tools/weighted-average-calculator.md) (slug: `weighted-average-calculator`, category: Math · Statistics, cost: 1cr) — Calculate a weighted average from value and weight lists. - [Z-Score Calculator](https://api.miniwebtool.com/tools/zscore-calculator.md) (slug: `zscore-calculator`, category: Math · Statistics, cost: 1cr) — Calculate z-scores, inverse values, percentiles, and normal probabilities. - [Surface Area of a Cone Calculator](https://api.miniwebtool.com/tools/surface-area-of-a-cone-calculator.md) (slug: `surface-area-of-a-cone-calculator`, category: Math · Surface Area, cost: 1cr) — Calculate cone base, lateral, and total surface area from radius-height, radius-slant, or diameter-height inputs. - [Surface Area of a Cube Calculator](https://api.miniwebtool.com/tools/surface-area-of-a-cube-calculator.md) (slug: `surface-area-of-a-cube-calculator`, category: Math · Surface Area, cost: 1cr) — Calculate cube surface area and related measurements from edge, diagonal, volume, or surface area. - [Commute Life Wasted Calculator](https://api.miniwebtool.com/tools/commute-life-wasted-calculator.md) (slug: `commute-life-wasted-calculator`, category: Math · Time, cost: 1cr) — Estimate weekly, yearly, and career time spent commuting. - [Arccos Calculator](https://api.miniwebtool.com/tools/arccos-calculator.md) (slug: `arccos-calculator`, category: Math · Trigonometry, cost: 1cr) — Calculate inverse cosine in radians and degrees. - [Arcsin Calculator](https://api.miniwebtool.com/tools/arcsin-calculator.md) (slug: `arcsin-calculator`, category: Math · Trigonometry, cost: 1cr) — Calculate arcsine from a sine value, including degree/radian output and special-angle recognition. - [Arctan Calculator](https://api.miniwebtool.com/tools/arctan-calculator.md) (slug: `arctan-calculator`, category: Math · Trigonometry, cost: 1cr) — Calculate inverse tangent in radians and degrees. - [Arctan2 Calculator](https://api.miniwebtool.com/tools/arctan2-calculator.md) (slug: `arctan2-calculator`, category: Math · Trigonometry, cost: 1cr) — Calculate atan2(y, x), normalized angle, radius, slope, and quadrant. - [Cosine Calculator](https://api.miniwebtool.com/tools/cosine-calculator.md) (slug: `cosine-calculator`, category: Math · Trigonometry, cost: 1cr) — Calculate cosine with radians/degrees conversion, quadrant, and special-angle recognition. - [Cosecant/Secant/Cotangent Calculator](https://api.miniwebtool.com/tools/csc-sec-cot-calculator.md) (slug: `csc-sec-cot-calculator`, category: Math · Trigonometry, cost: 1cr) — Calculate csc, sec, cot, sine, and cosine for an angle. - [Decimal Degrees to DMS Converter](https://api.miniwebtool.com/tools/decimal-degrees-to-dms-converter.md) (slug: `decimal-degrees-to-dms-converter`, category: Math · Trigonometry, cost: 1cr) — Convert decimal degrees to degrees, minutes, and seconds, with hemisphere labels for coordinates. - [Degree to Radian Converter](https://api.miniwebtool.com/tools/degree-to-radian-converter.md) (slug: `degree-to-radian-converter`, category: Math · Trigonometry, cost: 1cr) — Convert degrees to radians with pi-fraction, quadrant, and trig values. - [DMS to Decimal Degrees Converter](https://api.miniwebtool.com/tools/dms-to-decimal-converter.md) (slug: `dms-to-decimal-converter`, category: Math · Trigonometry, cost: 1cr) — Convert degrees, minutes, and seconds to signed decimal degrees. - [Law of Cosines Calculator](https://api.miniwebtool.com/tools/law-of-cosines-calculator.md) (slug: `law-of-cosines-calculator`, category: Math · Trigonometry, cost: 1cr) — Use the law of cosines to solve a side or included angle. - [Law of Sines Calculator](https://api.miniwebtool.com/tools/law-of-sines-calculator.md) (slug: `law-of-sines-calculator`, category: Math · Trigonometry, cost: 1cr) — Use the law of sines to solve a side or possible angle. - [Sine Calculator](https://api.miniwebtool.com/tools/sine-calculator.md) (slug: `sine-calculator`, category: Math · Trigonometry, cost: 1cr) — Calculate sine with radians/degrees conversion, quadrant, and special-angle recognition. - [Tangent Calculator](https://api.miniwebtool.com/tools/tangent-calculator.md) (slug: `tangent-calculator`, category: Math · Trigonometry, cost: 1cr) — Calculate tangent and flag vertical-asymptote inputs. - [Unit Circle Calculator](https://api.miniwebtool.com/tools/unit-circle-calculator.md) (slug: `unit-circle-calculator`, category: Math · Trigonometry, cost: 1cr) — Calculate unit-circle sine, cosine, tangent, radians, degrees, and point coordinates. - [Length Converter](https://api.miniwebtool.com/tools/length-converter.md) (slug: `length-converter`, category: Math · Unit Conversion, cost: 1cr) — Convert a length value across metric, imperial, and nautical units. - [Acres to Hectares Converter](https://api.miniwebtool.com/tools/acres-to-hectares-converter.md) (slug: `acres-to-hectares-converter`, category: Math · Unit Converters, cost: 1cr) — Convert between acres and hectares with related area units. - [Acres to Perches Converter](https://api.miniwebtool.com/tools/acres-to-perches-converter.md) (slug: `acres-to-perches-converter`, category: Math · Unit Converters, cost: 1cr) — Convert acres and perches for land area calculations. - [Acres to Square Feet Converter](https://api.miniwebtool.com/tools/acres-to-square-feet-converter.md) (slug: `acres-to-square-feet-converter`, category: Math · Unit Converters, cost: 1cr) — Convert between acres and square feet with related area units. - [Acres to Square Meters Converter](https://api.miniwebtool.com/tools/acres-to-square-meters-converter.md) (slug: `acres-to-square-meters-converter`, category: Math · Unit Converters, cost: 1cr) — Convert between acres and square meters with related area units. - [Acres to Square Miles Converter](https://api.miniwebtool.com/tools/acres-to-square-miles-converter.md) (slug: `acres-to-square-miles-converter`, category: Math · Unit Converters, cost: 1cr) — Convert acres and square miles, including related land-area units. - [Acres to Square Yards Converter](https://api.miniwebtool.com/tools/acres-to-square-yards-converter.md) (slug: `acres-to-square-yards-converter`, category: Math · Unit Converters, cost: 1cr) — Convert acres and square yards, including related area units. - [Angle Converter](https://api.miniwebtool.com/tools/angle-converter.md) (slug: `angle-converter`, category: Math · Unit Converters, cost: 1cr) — Convert angles between degrees, radians, gradians, turns, arcminutes, arcseconds, and milliradians. - [CM to Inches Converter](https://api.miniwebtool.com/tools/cm-to-inches-converter.md) (slug: `cm-to-inches-converter`, category: Math · Unit Converters, cost: 1cr) — Convert centimeters to inches, feet/inches, and nearest 1/16-inch fraction. - [Cups to Tablespoons Converter](https://api.miniwebtool.com/tools/cups-to-tablespoons-converter.md) (slug: `cups-to-tablespoons-converter`, category: Math · Unit Converters, cost: 1cr) — Convert US cups and tablespoons, including teaspoons and fluid ounces. - [Data Transfer Rate Converter](https://api.miniwebtool.com/tools/data-transfer-rate-converter.md) (slug: `data-transfer-rate-converter`, category: Math · Unit Converters, cost: 1cr) — Convert bandwidth between bps, Mbps, MB/s and binary variants, with an optional download-time estimate. - [Feet to Meters Converter](https://api.miniwebtool.com/tools/feet-to-meters-converter.md) (slug: `feet-to-meters-converter`, category: Math · Unit Converters, cost: 1cr) — Convert feet and optional inches to meters, centimeters, and millimeters. - [File Size Converter](https://api.miniwebtool.com/tools/file-size-converter.md) (slug: `file-size-converter`, category: Math · Unit Converters, cost: 1cr) — Convert file sizes across decimal (KB, MB) and binary (KiB, MiB) units with an all-unit table. - [Gallons to Cups Converter](https://api.miniwebtool.com/tools/gallons-to-cups-converter.md) (slug: `gallons-to-cups-converter`, category: Math · Unit Converters, cost: 1cr) — Convert US gallons and cups, with quart and pint equivalents. - [Grams to Ounces Converter](https://api.miniwebtool.com/tools/grams-to-ounces-converter.md) (slug: `grams-to-ounces-converter`, category: Math · Unit Converters, cost: 1cr) — Convert grams to ounces, pounds, kilograms, and milligrams. - [Grams to Pounds Converter](https://api.miniwebtool.com/tools/grams-to-pounds-converter.md) (slug: `grams-to-pounds-converter`, category: Math · Unit Converters, cost: 1cr) — Convert grams to pounds, ounces, and kilograms. - [Inches to CM Converter](https://api.miniwebtool.com/tools/inches-to-cm-converter.md) (slug: `inches-to-cm-converter`, category: Math · Unit Converters, cost: 1cr) — Convert inches to centimeters, millimeters, meters, and feet. - [kg to lbs Converter](https://api.miniwebtool.com/tools/kg-to-lbs-converter.md) (slug: `kg-to-lbs-converter`, category: Math · Unit Converters, cost: 1cr) — Convert kilograms and pounds with ounce breakdown. - [kPa to psi Converter](https://api.miniwebtool.com/tools/kpa-to-psi-converter.md) (slug: `kpa-to-psi-converter`, category: Math · Unit Converters, cost: 1cr) — Convert kilopascals to psi, bar, atm, and mmHg. - [Liters to Cups Converter](https://api.miniwebtool.com/tools/liters-to-cups-converter.md) (slug: `liters-to-cups-converter`, category: Math · Unit Converters, cost: 1cr) — Convert liters to US, metric, and imperial cups. - [mAh to Wh Converter](https://api.miniwebtool.com/tools/mah-to-wh-converter.md) (slug: `mah-to-wh-converter`, category: Math · Unit Converters, cost: 1cr) — Convert battery capacity and energy among mAh, Ah and Wh using nominal voltage. - [Meters to Feet Converter](https://api.miniwebtool.com/tools/meters-to-feet-converter.md) (slug: `meters-to-feet-converter`, category: Math · Unit Converters, cost: 1cr) — Convert meters to decimal feet and feet-and-inches. - [Ounce to Gram Converter](https://api.miniwebtool.com/tools/ounce-to-gram-converter.md) (slug: `ounce-to-gram-converter`, category: Math · Unit Converters, cost: 1cr) — Convert ounces to grams, kilograms, milligrams, and pounds. - [Ounces to Cups Converter](https://api.miniwebtool.com/tools/ounces-to-cups-converter.md) (slug: `ounces-to-cups-converter`, category: Math · Unit Converters, cost: 1cr) — Convert US fluid ounces and cups with spoon and milliliter equivalents. - [Percent to PPM Converter](https://api.miniwebtool.com/tools/percent-to-ppm-converter.md) (slug: `percent-to-ppm-converter`, category: Math · Unit Converters, cost: 1cr) — Convert percent to ppm or ppm to percent. - [Perches to Acres Converter](https://api.miniwebtool.com/tools/perches-to-acres-converter.md) (slug: `perches-to-acres-converter`, category: Math · Unit Converters, cost: 1cr) — Convert perches and acres for land area calculations. - [Pounds to Grams Converter](https://api.miniwebtool.com/tools/pounds-to-grams-converter.md) (slug: `pounds-to-grams-converter`, category: Math · Unit Converters, cost: 1cr) — Convert pounds to grams, kilograms, ounces, and milligrams. - [PPM to Percent Converter](https://api.miniwebtool.com/tools/ppm-to-percent-converter.md) (slug: `ppm-to-percent-converter`, category: Math · Unit Converters, cost: 1cr) — Convert parts per million to percentage and related concentration scales. - [Square Yards to Acres Converter](https://api.miniwebtool.com/tools/square-yards-to-acres-converter.md) (slug: `square-yards-to-acres-converter`, category: Math · Unit Converters, cost: 1cr) — Convert square yards and acres, including related area units. - [Tablespoons to Cups Converter](https://api.miniwebtool.com/tools/tablespoons-to-cups-converter.md) (slug: `tablespoons-to-cups-converter`, category: Math · Unit Converters, cost: 1cr) — Convert US tablespoons to cups, teaspoons, fluid ounces, and milliliters. - [Tablespoons to Teaspoons Converter](https://api.miniwebtool.com/tools/tablespoons-to-teaspoons-converter.md) (slug: `tablespoons-to-teaspoons-converter`, category: Math · Unit Converters, cost: 1cr) — Convert US tablespoons to teaspoons, cups, fluid ounces, and milliliters. - [Teaspoons to Cups Converter](https://api.miniwebtool.com/tools/teaspoons-to-cups-converter.md) (slug: `teaspoons-to-cups-converter`, category: Math · Unit Converters, cost: 1cr) — Convert US teaspoons and cups, including tablespoons and fluid ounces. - [Teaspoons to Tablespoons Converter](https://api.miniwebtool.com/tools/teaspoons-to-tablespoons-converter.md) (slug: `teaspoons-to-tablespoons-converter`, category: Math · Unit Converters, cost: 1cr) — Convert US teaspoons to tablespoons, cups, fluid ounces, and milliliters. - [Cups to Gallons Converter](https://api.miniwebtool.com/tools/cups-to-gallons-converter.md) (slug: `cups-to-gallons-converter`, category: Math · Volume, cost: 1cr) — Convert US cups and gallons with related volume units. - [Cups to Liters Converter](https://api.miniwebtool.com/tools/cups-to-liters-converter.md) (slug: `cups-to-liters-converter`, category: Math · Volume, cost: 1cr) — Convert US cups and liters with milliliter, fluid-ounce, and spoon equivalents. - [Cups to Ounces Converter](https://api.miniwebtool.com/tools/cups-to-ounces-converter.md) (slug: `cups-to-ounces-converter`, category: Math · Volume, cost: 1cr) — Convert cups and fluid ounces for US customary, US legal, imperial, or metric cups. - [Cups to Quarts Converter](https://api.miniwebtool.com/tools/cups-to-quarts-converter.md) (slug: `cups-to-quarts-converter`, category: Math · Volume, cost: 1cr) — Convert US cups and quarts with related volume units. - [Cups to Teaspoons Converter](https://api.miniwebtool.com/tools/cups-to-teaspoons-converter.md) (slug: `cups-to-teaspoons-converter`, category: Math · Volume, cost: 1cr) — Convert US cups and teaspoons with tablespoon and fluid-ounce equivalents. - [Volume of a Cone Calculator](https://api.miniwebtool.com/tools/volume-of-a-cone-calculator.md) (slug: `volume-of-a-cone-calculator`, category: Math · Volume, cost: 1cr) — Calculate cone volume, slant height, base area, lateral area, and total surface area. - [Volume of a Cube Calculator](https://api.miniwebtool.com/tools/volume-of-a-cube-calculator.md) (slug: `volume-of-a-cube-calculator`, category: Math · Volume, cost: 1cr) — Calculate cube volume, surface area, face area, diagonals, and total edge length. - [Volume of a Pyramid Calculator](https://api.miniwebtool.com/tools/volume-of-a-pyramid-calculator.md) (slug: `volume-of-a-pyramid-calculator`, category: Math · Volume, cost: 1cr) — Calculate volume, base area, slant height, and surface area for square, rectangular, or triangular pyramids. - [Volume of a Rectangular Prism Calculator](https://api.miniwebtool.com/tools/volume-of-a-rectangular-prism-calculator.md) (slug: `volume-of-a-rectangular-prism-calculator`, category: Math · Volume, cost: 1cr) — Calculate rectangular prism volume, surface area, diagonals, base perimeter, and total edge length. - [Volume of Ellipsoid Calculator](https://api.miniwebtool.com/tools/volume-of-ellipsoid-calculator.md) (slug: `volume-of-ellipsoid-calculator`, category: Math · Volume, cost: 1cr) — Calculate ellipsoid volume, approximate surface area, cross sections, equivalent sphere radius, and shape type. - [Cubic Meters to Cubic Feet](https://api.miniwebtool.com/tools/cubic-meters-to-cubic-feet.md) (slug: `cubic-meters-to-cubic-feet`, category: Math · Volume Converters, cost: 1cr) — Convert cubic meters and cubic feet with common volume equivalents. - [Gallons to Liters Converter](https://api.miniwebtool.com/tools/gallons-to-liters-converter.md) (slug: `gallons-to-liters-converter`, category: Math · Volume Converters, cost: 1cr) — Convert US or UK gallons to liters, with a reverse conversion mode. - [Engine Displacement Calculator](https://api.miniwebtool.com/tools/engine-displacement-calculator.md) (slug: `engine-displacement-calculator`, category: Miscellaneous · Automotive, cost: 1cr) — Calculate total and per-cylinder engine displacement from bore, stroke and cylinder count. - [Bend Allowance Calculator](https://api.miniwebtool.com/tools/bend-allowance-calculator.md) (slug: `bend-allowance-calculator`, category: Miscellaneous · Construction, cost: 1cr) — Calculate sheet-metal bend allowance, setback, deduction and flat-pattern length. - [Battery Series/Parallel Calculator](https://api.miniwebtool.com/tools/battery-series-parallel-calculator.md) (slug: `battery-series-parallel-calculator`, category: Miscellaneous · Electronics, cost: 1cr) — Calculate battery-pack voltage, capacity, energy, resistance, discharge current and runtime from an S/P layout. - [kVA Calculator](https://api.miniwebtool.com/tools/kva-calculator.md) (slug: `kva-calculator`, category: Miscellaneous · Electronics, cost: 1cr) — Solve kVA, kW, kVAR, volts or amps for DC, single-phase and three-phase systems. - [RC Low-Pass Filter Calculator](https://api.miniwebtool.com/tools/rc-low-pass-filter-calculator.md) (slug: `rc-low-pass-filter-calculator`, category: Miscellaneous · Electronics, cost: 1cr) — Calculate RC low-pass cutoff, time constant, gain, attenuation and phase at a selected frequency. - [Resistors in Series Calculator](https://api.miniwebtool.com/tools/resistors-in-series-calculator.md) (slug: `resistors-in-series-calculator`, category: Miscellaneous · Electronics, cost: 1cr) — Add up to 200 series resistors and report each resistor's voltage-divider share. - [Series/Parallel Capacitor Calculator](https://api.miniwebtool.com/tools/series-parallel-capacitor-calculator.md) (slug: `series-parallel-capacitor-calculator`, category: Miscellaneous · Electronics, cost: 1cr) — Calculate equivalent capacitance for a list of capacitors connected in series or parallel. - [Watts to Amps Calculator](https://api.miniwebtool.com/tools/watts-to-amps-calculator.md) (slug: `watts-to-amps-calculator`, category: Miscellaneous · Electronics, cost: 1cr) — Convert watts to amps for DC, single-phase AC or three-phase AC systems. - [Tire Size Calculator](https://api.miniwebtool.com/tools/tire-size-calculator.md) (slug: `tire-size-calculator`, category: Miscellaneous · General Tools, cost: 1cr) — Calculate tire sidewall, diameter, circumference, and revolutions per mile. - [Mechanical Advantage Calculator](https://api.miniwebtool.com/tools/mechanical-advantage-calculator.md) (slug: `mechanical-advantage-calculator`, category: Miscellaneous · Physics, cost: 1cr) — Calculate ideal and efficiency-adjusted mechanical advantage for levers, pulleys, ramps and gears. - [Test Score Calculator](https://api.miniwebtool.com/tools/test-score-calculator.md) (slug: `test-score-calculator`, category: Miscellaneous · Student Calculators, cost: 1cr) — Convert earned and total test points into a percentage, letter grade, and GPA points. - [Weighted Grade Calculator](https://api.miniwebtool.com/tools/weighted-grade-calculator.md) (slug: `weighted-grade-calculator`, category: Miscellaneous · Student Calculators, cost: 1cr) — Calculate a weighted course grade from category weights and scores. - [Daily Time Savings Calculator](https://api.miniwebtool.com/tools/daily-time-savings-calculator.md) (slug: `daily-time-savings-calculator`, category: Miscellaneous · Time, cost: 1cr) — Calculate yearly, monthly, and weekly time saved from a small daily savings habit. - [IP Address to Hex Converter](https://api.miniwebtool.com/tools/ip-address-to-hex-converter.md) (slug: `ip-address-to-hex-converter`, category: Network · Ip, cost: 1cr) — Convert IPv4 or IPv6 addresses to integer, hex, and binary formats. - [IP Subnet Calculator](https://api.miniwebtool.com/tools/ip-subnet-calculator.md) (slug: `ip-subnet-calculator`, category: Network · Ip, cost: 1cr) — Calculate CIDR subnet address ranges, masks, and host counts. - [MAC Address Analyzer](https://api.miniwebtool.com/tools/mac-address-analyzer.md) (slug: `mac-address-analyzer`, category: Network · Mac, cost: 1cr) — Normalize and inspect MAC address type and administration bits. - [Friction Calculator](https://api.miniwebtool.com/tools/friction-calculator.md) (slug: `friction-calculator`, category: Physics · Mechanics, cost: 1cr) — Calculate static and kinetic friction, sliding state, and acceleration from mass or normal force. - [Boiling Point Calculator](https://api.miniwebtool.com/tools/boiling-point-calculator.md) (slug: `boiling-point-calculator`, category: Physics · Thermodynamics, cost: 1cr) — Calculate water boiling point from altitude or atmospheric pressure. - [Keyboard Mileage Calculator](https://api.miniwebtool.com/tools/keyboard-mileage-calculator.md) (slug: `keyboard-mileage-calculator`, category: Productivity · Fun Calculators, cost: 1cr) — Estimate finger travel distance from typing speed and time spent typing. - [Random Playing Card Generator](https://api.miniwebtool.com/tools/random-playing-card-generator.md) (slug: `random-playing-card-generator`, category: Random · Cards, cost: 1cr) — Draw random playing cards from a standard deck with optional jokers. - [Random Color Generator](https://api.miniwebtool.com/tools/random-color-generator.md) (slug: `random-color-generator`, category: Random · Color, cost: 1cr) — Generate random HEX, RGB, and HSL colors with optional harmony rules. - [Random Date Generator](https://api.miniwebtool.com/tools/random-date-generator.md) (slug: `random-date-generator`, category: Random · Date, cost: 1cr) — Generate random dates inside a bounded date range. - [List Randomizer](https://api.miniwebtool.com/tools/list-randomizer.md) (slug: `list-randomizer`, category: Random · Lists, cost: 1cr) — Shuffle a newline-separated list into random order. - [Random Group Generator](https://api.miniwebtool.com/tools/random-group-generator.md) (slug: `random-group-generator`, category: Random · Lists, cost: 1cr) — Create random balanced groups from a newline-separated list of names. - [Random Line Picker](https://api.miniwebtool.com/tools/random-line-picker.md) (slug: `random-line-picker`, category: Random · Lists, cost: 1cr) — Pick random non-empty lines from user-supplied text. - [Random Name Picker](https://api.miniwebtool.com/tools/random-name-picker.md) (slug: `random-name-picker`, category: Random · Lists, cost: 1cr) — Draw one or more random names from a list, optionally removing each name once picked. - [Random Picker](https://api.miniwebtool.com/tools/random-picker.md) (slug: `random-picker`, category: Random · Lists, cost: 1cr) — Pick random items from any newline-separated list. - [Random Port Number Generator](https://api.miniwebtool.com/tools/random-port-number-generator.md) (slug: `random-port-number-generator`, category: Random · Network, cost: 1cr) — Generate random network port numbers in standard or custom ranges. - [Random Decimal Number Generator](https://api.miniwebtool.com/tools/random-decimal-number-generator.md) (slug: `random-decimal-number-generator`, category: Random · Numbers, cost: 1cr) — Generate random decimal numbers between 0 and 1 with configurable precision. - [Random Integer Generator](https://api.miniwebtool.com/tools/random-integer-generator.md) (slug: `random-integer-generator`, category: Random · Numbers, cost: 1cr) — Generate random integers with optional uniqueness, sorting, exclusions, and seed replay. - [Random Quote Generator](https://api.miniwebtool.com/tools/random-quote-generator.md) (slug: `random-quote-generator`, category: Random · Quotes, cost: 3cr) — Generate or search quotes from a bundled SQLite quote database. - [Random Letter Generator](https://api.miniwebtool.com/tools/random-letter-generator.md) (slug: `random-letter-generator`, category: Random · Text, cost: 1cr) — Generate random letters with case, vowel/consonant, and duplicate controls. - [Random String Generator](https://api.miniwebtool.com/tools/random-string-generator.md) (slug: `random-string-generator`, category: Random · Text, cost: 1cr) — Generate random strings, passwords, API keys, tokens, PINs, or hex strings. - [Astronomical Unit Converter](https://api.miniwebtool.com/tools/astronomical-unit-converter.md) (slug: `astronomical-unit-converter`, category: Science · Astronomy, cost: 1cr) — Convert astronomical distances among AU, light-time, parsecs, kilometers, and miles. - [Dilution Calculator](https://api.miniwebtool.com/tools/dilution-calculator.md) (slug: `dilution-calculator`, category: Science · Chemical Calculators, cost: 1cr) — Solve M1V1 = M2V2 for stock concentration, stock volume, final concentration, or final volume. - [Empirical Formula Calculator](https://api.miniwebtool.com/tools/empirical-formula-calculator.md) (slug: `empirical-formula-calculator`, category: Science · Chemical Calculators, cost: 1cr) — Empirical formula from element mass percentages or masses, with optional molecular formula when a molecular mass is supplied. - [Limiting Reactant Calculator](https://api.miniwebtool.com/tools/limiting-reactant-calculator.md) (slug: `limiting-reactant-calculator`, category: Science · Chemical Calculators, cost: 1cr) — Find the limiting reactant, theoretical yield, leftover excess, and percent yield from a balanced equation. - [Molality Calculator](https://api.miniwebtool.com/tools/molality-calculator.md) (slug: `molality-calculator`, category: Science · Chemical Calculators, cost: 1cr) — Calculate molality and colligative freezing and boiling point shifts. - [Molar Mass Calculator](https://api.miniwebtool.com/tools/molar-mass-calculator.md) (slug: `molar-mass-calculator`, category: Science · Chemical Calculators, cost: 1cr) — Molar mass of a chemical formula with per-element atom count, contribution, and percentage composition, supporting nested parentheses. - [Molarity Calculator](https://api.miniwebtool.com/tools/molarity-calculator.md) (slug: `molarity-calculator`, category: Science · Chemical Calculators, cost: 1cr) — Calculate molarity, solute mass, or solution volume from mass, molar mass, and volume. - [Mole/Gram/Particle Converter](https://api.miniwebtool.com/tools/mole-gram-particle-converter.md) (slug: `mole-gram-particle-converter`, category: Science · Chemical Calculators, cost: 1cr) — Convert among moles, grams, and particles using molar mass and Avogadro's constant. - [Nernst Equation Calculator](https://api.miniwebtool.com/tools/nernst-equation-calculator.md) (slug: `nernst-equation-calculator`, category: Science · Chemical Calculators, cost: 1cr) — Calculate electrochemical cell potential under non-standard conditions. - [Osmotic Pressure Calculator](https://api.miniwebtool.com/tools/osmotic-pressure-calculator.md) (slug: `osmotic-pressure-calculator`, category: Science · Chemical Calculators, cost: 1cr) — Calculate osmotic pressure from molarity, temperature, and van't Hoff factor. - [pKa to Ka Converter](https://api.miniwebtool.com/tools/pka-to-ka-converter.md) (slug: `pka-to-ka-converter`, category: Science · Chemical Calculators, cost: 1cr) — Convert between pKa, Ka, pKb, and Kb for an acid-base conjugate pair. - [Beer-Lambert Law Calculator](https://api.miniwebtool.com/tools/beer-lambert-law-calculator.md) (slug: `beer-lambert-law-calculator`, category: Science · Chemistry, cost: 1cr) — Solve A = epsilon l c for absorbance, molar absorptivity, concentration, or path length. - [Boiling Point Elevation Calculator](https://api.miniwebtool.com/tools/boiling-point-elevation-calculator.md) (slug: `boiling-point-elevation-calculator`, category: Science · Chemistry, cost: 1cr) — Calculate boiling point elevation from molality, Kb, and van't Hoff factor. - [Chemical Equation Balancer](https://api.miniwebtool.com/tools/chemical-equation-balancer.md) (slug: `chemical-equation-balancer`, category: Science · Chemistry, cost: 1cr) — Balance a chemical equation by solving the element matrix for the smallest whole-number coefficients. - [Electron Configuration Calculator](https://api.miniwebtool.com/tools/electron-configuration-calculator.md) (slug: `electron-configuration-calculator`, category: Science · Chemistry, cost: 1cr) — Electron configuration of any element or ion, with noble-gas notation, shells, and valence electrons. - [Freezing Point Depression Calculator](https://api.miniwebtool.com/tools/freezing-point-depression-calculator.md) (slug: `freezing-point-depression-calculator`, category: Science · Chemistry, cost: 1cr) — Freezing point depression (delta-Tf = i * Kf * m) from molality or from solute/solvent mass, with a van't Hoff factor for ionic solutes. - [Henderson-Hasselbalch Calculator](https://api.miniwebtool.com/tools/henderson-hasselbalch-calculator.md) (slug: `henderson-hasselbalch-calculator`, category: Science · Chemistry, cost: 1cr) — Buffer pH from pKa and the conjugate base/acid ratio, or solve for the ratio or the pKa, via the Henderson-Hasselbalch equation. - [Percent Yield Calculator](https://api.miniwebtool.com/tools/percent-yield-calculator.md) (slug: `percent-yield-calculator`, category: Science · Chemistry, cost: 1cr) — Solve percent yield, actual yield, or theoretical yield. - [pH Calculator](https://api.miniwebtool.com/tools/ph-calculator.md) (slug: `ph-calculator`, category: Science · Chemistry, cost: 1cr) — pH, pOH, [H+], and [OH-] from any one of them, with acidity classification at 25 C. - [Parallel Resistor Calculator](https://api.miniwebtool.com/tools/parallel-resistor-calculator.md) (slug: `parallel-resistor-calculator`, category: Science · Electrical, cost: 1cr) — Calculate equivalent resistance and current sharing for resistors in parallel. - [Power Factor Calculator](https://api.miniwebtool.com/tools/power-factor-calculator.md) (slug: `power-factor-calculator`, category: Science · Electrical, cost: 1cr) — Calculate power factor, reactive power, or capacitor correction values. - [RC Time Constant Calculator](https://api.miniwebtool.com/tools/rc-time-constant-calculator.md) (slug: `rc-time-constant-calculator`, category: Science · Electrical, cost: 1cr) — Calculate RC circuit time constant, cutoff frequency, and charging or discharging levels. - [555 Timer Calculator](https://api.miniwebtool.com/tools/555-timer-calculator.md) (slug: `555-timer-calculator`, category: Science · Electronics, cost: 1cr) — Calculate 555 timer astable frequency, period, duty cycle, or monostable pulse width. - [Capacitor Calculator](https://api.miniwebtool.com/tools/capacitor-calculator.md) (slug: `capacitor-calculator`, category: Science · Electronics, cost: 1cr) — Calculate capacitor charge, stored energy, reactance, RC timing, or decode ceramic capacitor codes. - [Decibel (dB) Calculator](https://api.miniwebtool.com/tools/decibel-db-calculator.md) (slug: `decibel-db-calculator`, category: Science · Electronics, cost: 1cr) — Calculate power dB, voltage dB, dB ratios, and dBm/dBW/watt conversions. - [Ohm's Law Calculator](https://api.miniwebtool.com/tools/ohm-s-law-calculator.md) (slug: `ohm-s-law-calculator`, category: Science · Electronics, cost: 1cr) — Calculate voltage, current, resistance, and power from any two known values. - [Parallel Capacitor Calculator](https://api.miniwebtool.com/tools/parallel-capacitor-calculator.md) (slug: `parallel-capacitor-calculator`, category: Science · Electronics, cost: 1cr) — Calculate equivalent capacitance for capacitors in parallel. - [Resistor Color Code Calculator](https://api.miniwebtool.com/tools/resistor-color-code-calculator.md) (slug: `resistor-color-code-calculator`, category: Science · Electronics, cost: 1cr) — Calculate 4-band, 5-band, and 6-band resistor values from color bands. - [Resonant Frequency Calculator](https://api.miniwebtool.com/tools/resonant-frequency-calculator.md) (slug: `resonant-frequency-calculator`, category: Science · Electronics, cost: 1cr) — Calculate LC/RLC resonant frequency, inductance, capacitance, impedance, Q factor, and bandwidth. - [Series Resistor Calculator](https://api.miniwebtool.com/tools/series-resistor-calculator.md) (slug: `series-resistor-calculator`, category: Science · Electronics, cost: 1cr) — Calculate equivalent resistance for resistors in series. - [Bernoulli Equation Calculator](https://api.miniwebtool.com/tools/bernoulli-equation-calculator.md) (slug: `bernoulli-equation-calculator`, category: Science · Fluid Mechanics, cost: 1cr) — Solve one Bernoulli streamline pressure, velocity, or height term. - [Reynolds Number Calculator](https://api.miniwebtool.com/tools/reynolds-number-calculator.md) (slug: `reynolds-number-calculator`, category: Science · Fluid Mechanics, cost: 1cr) — Reynolds number with laminar/transitional/turbulent classification using geometry-specific thresholds for pipes, plates, and channels. - [Belt Length Calculator](https://api.miniwebtool.com/tools/belt-length-calculator.md) (slug: `belt-length-calculator`, category: Science · Mechanics, cost: 1cr) — Calculate open or crossed belt length, wrap angles, and optional belt speed. - [Bolt Torque Calculator](https://api.miniwebtool.com/tools/bolt-torque-calculator.md) (slug: `bolt-torque-calculator`, category: Science · Mechanics, cost: 1cr) — Recommended bolt tightening torque and preload for metric sizes and ISO grades, by the short-form K method and VDI 2230. - [Gear Ratio Calculator (Mechanical)](https://api.miniwebtool.com/tools/gear-ratio-calculator-mechanical.md) (slug: `gear-ratio-calculator-mechanical`, category: Science · Mechanics, cost: 1cr) — Calculate gear ratio, output RPM, torque, and mechanical advantage. - [Angular Velocity Calculator](https://api.miniwebtool.com/tools/angular-velocity-calculator.md) (slug: `angular-velocity-calculator`, category: Science · Physics, cost: 1cr) — Convert angular velocity between rad/s, RPM, Hz, deg/s, and period, or derive it from linear speed and radius with tangential and centripetal results. - [Density Calculator](https://api.miniwebtool.com/tools/density-calculator.md) (slug: `density-calculator`, category: Science · Physics, cost: 1cr) — Solve density, mass, or volume with common unit conversions. - [Doppler Effect Calculator](https://api.miniwebtool.com/tools/doppler-effect-calculator.md) (slug: `doppler-effect-calculator`, category: Science · Physics, cost: 1cr) — Observed frequency shift for moving sources and observers, classical for sound or relativistic for light. - [Falling Through Earth Calculator](https://api.miniwebtool.com/tools/falling-through-earth-calculator.md) (slug: `falling-through-earth-calculator`, category: Science · Physics, cost: 1cr) — Calculate idealized uniform-density gravity-train travel time and speed. - [Force Calculator](https://api.miniwebtool.com/tools/force-calculator.md) (slug: `force-calculator`, category: Science · Physics, cost: 1cr) — Solve Newton's second law for force, mass, or acceleration with common unit conversions. - [Heat Transfer Calculator](https://api.miniwebtool.com/tools/heat-transfer-calculator.md) (slug: `heat-transfer-calculator`, category: Science · Physics, cost: 1cr) — Calculate heat transfer by conduction, convection, or radiation. - [Kinetic Energy Calculator](https://api.miniwebtool.com/tools/kinetic-energy-calculator.md) (slug: `kinetic-energy-calculator`, category: Science · Physics, cost: 1cr) — Solve kinetic energy, mass, or velocity with KE = 1/2 m v^2 and unit conversions. - [Lens Equation Calculator](https://api.miniwebtool.com/tools/lens-equation-calculator.md) (slug: `lens-equation-calculator`, category: Science · Physics, cost: 1cr) — Thin-lens equation solver for image distance, focal length, or object distance with magnification and image properties. - [Moment of Inertia Calculator](https://api.miniwebtool.com/tools/moment-of-inertia-calculator.md) (slug: `moment-of-inertia-calculator`, category: Science · Physics, cost: 1cr) — Area moment of inertia (rectangle, circle, hollow circle, triangle) or mass moment of inertia (rod, cylinder, sphere, hollow cylinder), in SI units. - [Momentum Calculator](https://api.miniwebtool.com/tools/momentum-calculator.md) (slug: `momentum-calculator`, category: Science · Physics, cost: 1cr) — Calculate linear momentum and kinetic energy from mass and velocity. - [Pendulum Period Calculator](https://api.miniwebtool.com/tools/pendulum-period-calculator.md) (slug: `pendulum-period-calculator`, category: Science · Physics, cost: 1cr) — Simple pendulum solver for period, length, gravity, or frequency with planet presets and a large-amplitude correction. - [Potential Energy Calculator](https://api.miniwebtool.com/tools/potential-energy-calculator.md) (slug: `potential-energy-calculator`, category: Science · Physics, cost: 1cr) — Calculate gravitational or elastic potential energy and solve for missing variables. - [Projectile Motion Calculator](https://api.miniwebtool.com/tools/projectile-motion-calculator.md) (slug: `projectile-motion-calculator`, category: Science · Physics, cost: 1cr) — Projectile range, max height, flight time, and impact speed/angle from launch speed, angle, height, and gravity. - [Snell's Law Calculator](https://api.miniwebtool.com/tools/snell-s-law-calculator.md) (slug: `snell-s-law-calculator`, category: Science · Physics, cost: 1cr) — Refraction angles, indices, critical angle, and Brewster angle from Snell's law with a built-in material library. - [Specific Heat Capacity Calculator](https://api.miniwebtool.com/tools/specific-heat-capacity-calculator.md) (slug: `specific-heat-capacity-calculator`, category: Science · Physics, cost: 1cr) — Solve Q = m*c*dT for heat, mass, specific heat, or final temperature with a substance library and mixed units. - [Spring Constant Calculator](https://api.miniwebtool.com/tools/spring-constant-calculator.md) (slug: `spring-constant-calculator`, category: Science · Physics, cost: 1cr) — Hooke's law solver for force, spring constant, or displacement, plus elastic energy and oscillation period. - [Stopping Distance Calculator](https://api.miniwebtool.com/tools/stopping-distance-calculator.md) (slug: `stopping-distance-calculator`, category: Science · Physics, cost: 1cr) — Vehicle reaction + braking stopping distance by road condition (dry/wet/snow/ice), km/h or mph. - [Terminal Velocity Calculator](https://api.miniwebtool.com/tools/terminal-velocity-calculator.md) (slug: `terminal-velocity-calculator`, category: Science · Physics, cost: 1cr) — Terminal velocity from mass, drag coefficient, area, and fluid density, with object presets and approach-time milestones. - [Thermal Expansion Calculator](https://api.miniwebtool.com/tools/thermal-expansion-calculator.md) (slug: `thermal-expansion-calculator`, category: Science · Physics, cost: 1cr) — Calculate linear, area, or volume thermal expansion for common materials. - [Torque Calculator](https://api.miniwebtool.com/tools/torque-calculator.md) (slug: `torque-calculator`, category: Science · Physics, cost: 1cr) — Solve torque, force, lever arm distance, or angle using tau = F r sin(theta). - [Velocity Calculator](https://api.miniwebtool.com/tools/velocity-calculator.md) (slug: `velocity-calculator`, category: Science · Physics, cost: 1cr) — Calculate average velocity, distance, time, or relative velocity with distance, time, and speed units. - [Work and Power Calculator](https://api.miniwebtool.com/tools/work-and-power-calculator.md) (slug: `work-and-power-calculator`, category: Science · Physics, cost: 1cr) — Calculate mechanical work and power with common unit conversions. - [Work Calculator](https://api.miniwebtool.com/tools/work-calculator.md) (slug: `work-calculator`, category: Science · Physics, cost: 1cr) — Calculate mechanical work from force, distance, and angle. - [Buoyancy Calculator](https://api.miniwebtool.com/tools/buoyancy-calculator.md) (slug: `buoyancy-calculator`, category: Science · Physics Calculators, cost: 1cr) — Calculate buoyant force, object density, apparent weight, and float/sink verdict. - [Coulomb's Law Calculator](https://api.miniwebtool.com/tools/coulomb-s-law-calculator.md) (slug: `coulomb-s-law-calculator`, category: Science · Physics Calculators, cost: 1cr) — Electrostatic force between two point charges via Coulomb's law, solving for force, charge, or distance with dielectric media. - [de Broglie Wavelength Calculator](https://api.miniwebtool.com/tools/de-broglie-wavelength-calculator.md) (slug: `de-broglie-wavelength-calculator`, category: Science · Physics Calculators, cost: 1cr) — Calculate a particle's de Broglie wavelength from velocity or kinetic energy. - [E=mc² Calculator](https://api.miniwebtool.com/tools/e-mc-calculator.md) (slug: `e-mc-calculator`, category: Science · Physics Calculators, cost: 1cr) — Convert mass and energy using E=mc² with configurable conversion efficiency. - [Electricity Calculator](https://api.miniwebtool.com/tools/electricity-calculator.md) (slug: `electricity-calculator`, category: Science · Physics Calculators, cost: 1cr) — Solve voltage, current, resistance, and power from any two known Ohm's law values. - [Escape Velocity Calculator](https://api.miniwebtool.com/tools/escape-velocity-calculator.md) (slug: `escape-velocity-calculator`, category: Science · Physics Calculators, cost: 1cr) — Calculate escape velocity for preset or custom celestial bodies. - [Gravitational Force Calculator](https://api.miniwebtool.com/tools/gravitational-force-calculator.md) (slug: `gravitational-force-calculator`, category: Science · Physics Calculators, cost: 1cr) — Solve Newton's universal gravitation equation for force, mass, or distance. - [Ideal Gas Law Calculator](https://api.miniwebtool.com/tools/ideal-gas-law-calculator.md) (slug: `ideal-gas-law-calculator`, category: Science · Physics Calculators, cost: 1cr) — Solve PV=nRT for pressure, volume, moles, or temperature with unit conversion. - [Kepler's Third Law Calculator](https://api.miniwebtool.com/tools/kepler-s-third-law-calculator.md) (slug: `kepler-s-third-law-calculator`, category: Science · Physics Calculators, cost: 1cr) — Calculate orbital period and mean velocity from semi-major axis and central mass. - [Photon Energy Calculator](https://api.miniwebtool.com/tools/photon-energy-calculator.md) (slug: `photon-energy-calculator`, category: Science · Physics Calculators, cost: 1cr) — Convert photon wavelength, frequency, and energy using E=hf=hc/lambda. - [Time Dilation Calculator](https://api.miniwebtool.com/tools/time-dilation-calculator.md) (slug: `time-dilation-calculator`, category: Science · Physics Calculators, cost: 1cr) — Relativistic time dilation, Lorentz factor, clock rate, and optional length contraction at any sub-light speed. - [Bar to PSI Converter](https://api.miniwebtool.com/tools/bar-to-psi-converter.md) (slug: `bar-to-psi-converter`, category: Science · Pressure, cost: 1cr) — Convert bar and PSI, including kPa, MPa, atm, torr, inHg, and Pa. - [psi to kPa Converter](https://api.miniwebtool.com/tools/psi-to-kpa-converter.md) (slug: `psi-to-kpa-converter`, category: Science · Pressure, cost: 1cr) — Convert pounds per square inch to kilopascals and related pressure units. - [Celsius to Fahrenheit Calculator](https://api.miniwebtool.com/tools/celsius-to-fahrenheit-calculator.md) (slug: `celsius-to-fahrenheit-calculator`, category: Science · Temperature, cost: 1cr) — Convert Celsius to Fahrenheit and related temperature scales. - [Celsius to Kelvin Converter](https://api.miniwebtool.com/tools/celsius-to-kelvin-converter.md) (slug: `celsius-to-kelvin-converter`, category: Science · Temperature, cost: 1cr) — Convert Celsius to Kelvin and related temperature scales. - [Celsius to Rankine Converter](https://api.miniwebtool.com/tools/celsius-to-rankine-converter.md) (slug: `celsius-to-rankine-converter`, category: Science · Temperature, cost: 1cr) — Convert Celsius to Rankine and related temperature scales. - [Fahrenheit to Celsius Calculator](https://api.miniwebtool.com/tools/fahrenheit-to-celsius-calculator.md) (slug: `fahrenheit-to-celsius-calculator`, category: Science · Temperature, cost: 1cr) — Convert Fahrenheit to Celsius and related temperature scales. - [Fahrenheit to Kelvin Converter](https://api.miniwebtool.com/tools/fahrenheit-to-kelvin-converter.md) (slug: `fahrenheit-to-kelvin-converter`, category: Science · Temperature, cost: 1cr) — Convert Fahrenheit to Kelvin and related temperature scales. - [Fahrenheit to Rankine Converter](https://api.miniwebtool.com/tools/fahrenheit-to-rankine-converter.md) (slug: `fahrenheit-to-rankine-converter`, category: Science · Temperature, cost: 1cr) — Convert Fahrenheit to Rankine and related temperature scales. - [Kelvin to Celsius Converter](https://api.miniwebtool.com/tools/kelvin-to-celsius-converter.md) (slug: `kelvin-to-celsius-converter`, category: Science · Temperature, cost: 1cr) — Convert Kelvin to Celsius and related temperature scales. - [Kelvin to Fahrenheit Converter](https://api.miniwebtool.com/tools/kelvin-to-fahrenheit-converter.md) (slug: `kelvin-to-fahrenheit-converter`, category: Science · Temperature, cost: 1cr) — Convert Kelvin to Fahrenheit and related temperature scales. - [Rankine to Celsius Converter](https://api.miniwebtool.com/tools/rankine-to-celsius-converter.md) (slug: `rankine-to-celsius-converter`, category: Science · Temperature, cost: 1cr) — Convert Rankine to Celsius and related temperature scales. - [Rankine to Fahrenheit Converter](https://api.miniwebtool.com/tools/rankine-to-fahrenheit-converter.md) (slug: `rankine-to-fahrenheit-converter`, category: Science · Temperature, cost: 1cr) — Convert Rankine to Fahrenheit and related temperature scales. - [Energy Converter](https://api.miniwebtool.com/tools/energy-converter.md) (slug: `energy-converter`, category: Science · Unit Converters, cost: 1cr) — Convert energy between joules, calories, BTU, watt-hours, electronvolts, ergs, and therms. - [Power Converter](https://api.miniwebtool.com/tools/power-converter.md) (slug: `power-converter`, category: Science · Unit Converters, cost: 1cr) — Convert power among watts, kilowatts, horsepower, BTU per hour, refrigeration tons, and related units. - [Ultimate Frequency & Wavelength Converter](https://api.miniwebtool.com/tools/ultimate-frequency-wavelength-converter.md) (slug: `ultimate-frequency-wavelength-converter`, category: Science · Unit Converters, cost: 1cr) — Convert between frequency and wavelength using a configurable propagation speed and identify the spectrum band. - [Dew Point Calculator](https://api.miniwebtool.com/tools/dew-point-calculator.md) (slug: `dew-point-calculator`, category: Science · Weather, cost: 1cr) — Calculate dew point temperature from air temperature and relative humidity using the Magnus formula. - [Heat Index Calculator](https://api.miniwebtool.com/tools/heat-index-calculator.md) (slug: `heat-index-calculator`, category: Science · Weather, cost: 1cr) — Calculate the NWS heat index (apparent temperature) from air temperature and relative humidity. - [Wind Chill Calculator](https://api.miniwebtool.com/tools/wind-chill-calculator.md) (slug: `wind-chill-calculator`, category: Science · Weather, cost: 1cr) — Calculate NWS wind chill and frostbite risk from air temperature and wind speed. - [At Bats per Home Run Calculator](https://api.miniwebtool.com/tools/at-bats-per-home-run-calculator.md) (slug: `at-bats-per-home-run-calculator`, category: Sports · Baseball, cost: 1cr) — Calculate baseball at-bats per home run ratio and home run rate. - [Batting Average Calculator](https://api.miniwebtool.com/tools/batting-average-calculator.md) (slug: `batting-average-calculator`, category: Sports · Baseball, cost: 1cr) — Calculate baseball batting average from hits and at-bats. - [ERA Calculator](https://api.miniwebtool.com/tools/era-calculator.md) (slug: `era-calculator`, category: Sports · Baseball, cost: 1cr) — Calculate baseball earned run average. - [FIP Calculator](https://api.miniwebtool.com/tools/fip-calculator.md) (slug: `fip-calculator`, category: Sports · Baseball, cost: 1cr) — Calculate baseball fielding independent pitching. - [On Base Percentage Calculator](https://api.miniwebtool.com/tools/on-base-percentage-calculator.md) (slug: `on-base-percentage-calculator`, category: Sports · Baseball, cost: 1cr) — Calculate on-base percentage with batting average and optional OPS. - [OPS Calculator](https://api.miniwebtool.com/tools/ops-calculator.md) (slug: `ops-calculator`, category: Sports · Baseball, cost: 1cr) — Calculate baseball on-base plus slugging with OBP and SLG components. - [Slugging Percentage Calculator](https://api.miniwebtool.com/tools/slugging-percentage-calculator.md) (slug: `slugging-percentage-calculator`, category: Sports · Baseball, cost: 1cr) — Calculate baseball slugging percentage from hit types. - [Total Bases Calculator](https://api.miniwebtool.com/tools/total-bases-calculator.md) (slug: `total-bases-calculator`, category: Sports · Baseball, cost: 1cr) — Calculate baseball total bases from singles, doubles, triples, and home runs. - [WAR Calculator](https://api.miniwebtool.com/tools/war-calculator.md) (slug: `war-calculator`, category: Sports · Baseball, cost: 1cr) — Estimate simplified baseball WAR for position players or pitchers. - [WHIP Calculator](https://api.miniwebtool.com/tools/whip-calculator.md) (slug: `whip-calculator`, category: Sports · Baseball, cost: 1cr) — Calculate baseball WHIP with baseball innings notation support. - [Effective Field Goal Percentage Calculator](https://api.miniwebtool.com/tools/efg-calculator.md) (slug: `efg-calculator`, category: Sports · Basketball, cost: 1cr) — Calculate basketball effective field goal percentage. - [Field Goal Percentage Calculator](https://api.miniwebtool.com/tools/field-goal-percentage-calculator.md) (slug: `field-goal-percentage-calculator`, category: Sports · Basketball, cost: 1cr) — Calculate made-shot percentage and related shooting metrics. - [Rebound Rate Calculator](https://api.miniwebtool.com/tools/rebound-rate-calculator.md) (slug: `rebound-rate-calculator`, category: Sports · Basketball, cost: 1cr) — Calculate basketball offensive, defensive, and total rebound rates. - [True Shooting Percentage Calculator](https://api.miniwebtool.com/tools/true-shooting-percentage-calculator.md) (slug: `true-shooting-percentage-calculator`, category: Sports · Basketball, cost: 1cr) — Calculate basketball true shooting percentage from points, FGA, and FTA. - [Climbing Grade Converter](https://api.miniwebtool.com/tools/climbing-grade-converter.md) (slug: `climbing-grade-converter`, category: Sports · Climbing, cost: 1cr) — Convert roped and bouldering climbing grades across common systems. - [Character Counter](https://api.miniwebtool.com/tools/character-counter.md) (slug: `character-counter`, category: Text · Analysis, cost: 1cr) — Count characters, letters, digits, whitespace, and punctuation. - [Compare Two Strings](https://api.miniwebtool.com/tools/compare-two-strings.md) (slug: `compare-two-strings`, category: Text · Analysis, cost: 1cr) — Compare two strings with equality, similarity, edit distance, and diff statistics. - [Email Extractor](https://api.miniwebtool.com/tools/email-extractor.md) (slug: `email-extractor`, category: Text · Analysis, cost: 1cr) — Extract email addresses from text with de-duplication, sorting, and a domain breakdown. - [Find Longest Line](https://api.miniwebtool.com/tools/find-longest-line.md) (slug: `find-longest-line`, category: Text · Analysis, cost: 1cr) — Rank text lines by character, word, or byte length and return the longest lines. - [Line Counter](https://api.miniwebtool.com/tools/line-counter.md) (slug: `line-counter`, category: Text · Analysis, cost: 1cr) — Count total / non-empty / empty lines and longest-line length. - [Lipogram Checker](https://api.miniwebtool.com/tools/lipogram-checker.md) (slug: `lipogram-checker`, category: Text · Analysis, cost: 1cr) — Check whether text avoids one or more forbidden letters. - [Pangram Checker](https://api.miniwebtool.com/tools/pangram-checker.md) (slug: `pangram-checker`, category: Text · Analysis, cost: 1cr) — Check whether text contains every letter A through Z. - [Sentence Counter](https://api.miniwebtool.com/tools/sentence-counter.md) (slug: `sentence-counter`, category: Text · Analysis, cost: 1cr) — Count sentences and classify sentence type and basic complexity. - [Word Counter](https://api.miniwebtool.com/tools/word-counter.md) (slug: `word-counter`, category: Text · Analysis, cost: 1cr) — Count words, characters, sentences, paragraphs, reading/speaking time, top words. - [CSS Beautifier](https://api.miniwebtool.com/tools/css-beautifier.md) (slug: `css-beautifier`, category: Text · Css, cost: 1cr) — Format compact CSS with indentation and line breaks. - [Text Case Converter](https://api.miniwebtool.com/tools/lowercase-uppercase-letters.md) (slug: `lowercase-uppercase-letters`, category: Text · Case, cost: 1cr) — Convert text to uppercase, lowercase, title, sentence, camel, snake, kebab, and related cases. - [Title Case Converter](https://api.miniwebtool.com/tools/title-case-converter.md) (slug: `title-case-converter`, category: Text · Case, cost: 1cr) — Convert text to title case using smart, APA, Chicago, MLA, AP, or simple capitalization rules. - [Caesar Cipher Tool](https://api.miniwebtool.com/tools/caesar-cipher-tool.md) (slug: `caesar-cipher-tool`, category: Text · Cipher, cost: 1cr) — Encrypt or decrypt text with a Caesar shift cipher, with optional brute-force candidates. - [Invisible Character Remover](https://api.miniwebtool.com/tools/invisible-character-remover.md) (slug: `invisible-character-remover`, category: Text · Cleanup, cost: 1cr) — Detect, remove, or reveal zero-width and Unicode formatting characters hidden in text. - [List Cleaner](https://api.miniwebtool.com/tools/list-cleaner.md) (slug: `list-cleaner`, category: Text · Cleanup, cost: 1cr) — Trim, deduplicate, remove blanks, and optionally sort list lines. - [Smart Quotes Remover](https://api.miniwebtool.com/tools/smart-quotes-remover.md) (slug: `smart-quotes-remover`, category: Text · Cleanup, cost: 1cr) — Replace curly smart quotes and primes with straight quotes, with JSON-safe escaping. - [Diff Checker](https://api.miniwebtool.com/tools/diff-checker.md) (slug: `diff-checker`, category: Text · Comparison, cost: 1cr) — Compare two texts line by line and return change statistics with a unified diff. - [Number to Word Converter](https://api.miniwebtool.com/tools/number-to-word-converter.md) (slug: `number-to-word-converter`, category: Text · Conversion, cost: 1cr) — Convert a decimal number to English cardinal, ordinal, or currency words. - [Remove Duplicate Lines](https://api.miniwebtool.com/tools/remove-duplicate-lines.md) (slug: `remove-duplicate-lines`, category: Text · Deduplication, cost: 1cr) — Remove duplicate text lines while keeping first, last, or only unique occurrences. - [Morse Code Decoder](https://api.miniwebtool.com/tools/morse-code-decoder.md) (slug: `morse-code-decoder`, category: Text · Encoding, cost: 1cr) — Decode International Morse Code to text (single space between letters, three spaces between words). - [Morse Code Generator](https://api.miniwebtool.com/tools/morse-code-generator.md) (slug: `morse-code-generator`, category: Text · Encoding, cost: 1cr) — Convert text to International Morse code with character breakdown. - [Number Extractor](https://api.miniwebtool.com/tools/number-extractor.md) (slug: `number-extractor`, category: Text · Extraction, cost: 1cr) — Extract decimal or integer values from text and return the values with simple statistics. - [ASCII Art Generator](https://api.miniwebtool.com/tools/ascii-art-generator.md) (slug: `ascii-art-generator`, category: Text · Formatting, cost: 1cr) — Generate deterministic ASCII banner art from short text. - [Markdown Table Generator](https://api.miniwebtool.com/tools/markdown-table-generator.md) (slug: `markdown-table-generator`, category: Text · Formatting, cost: 1cr) — Turn delimited rows into a padded Markdown table with auto-detected delimiter, optional header row, and left, center, or right column alignment. - [Text Formatter](https://api.miniwebtool.com/tools/text-formatter.md) (slug: `text-formatter`, category: Text · Formatting, cost: 1cr) — Apply case and whitespace transforms to a block of text. - [Buzzword Bingo Generator](https://api.miniwebtool.com/tools/buzzword-bingo-generator.md) (slug: `buzzword-bingo-generator`, category: Text · Generators, cost: 1cr) — Generate a deterministic buzzword bingo board from a term list and seed. - [Reverse Line](https://api.miniwebtool.com/tools/reverse-line.md) (slug: `reverse-line`, category: Text · Lines, cost: 1cr) — Reverse the characters in each line of text. - [List Difference Calculator](https://api.miniwebtool.com/tools/list-difference-calculator.md) (slug: `list-difference-calculator`, category: Text · Lists, cost: 1cr) — Compare two line-based lists and return differences, intersection, and union. - [Add Line Numbers](https://api.miniwebtool.com/tools/add-line-numbers.md) (slug: `add-line-numbers`, category: Text · Modification, cost: 1cr) — Add configurable line numbers to the start or end of each text line. - [Add Prefix and Suffix](https://api.miniwebtool.com/tools/add-prefix-and-suffix.md) (slug: `add-prefix-and-suffix`, category: Text · Modification, cost: 1cr) — Add prefix, suffix, and optional numbering to each text line, word, or delimited item. - [Break Line by Characters](https://api.miniwebtool.com/tools/break-line-by-characters.md) (slug: `break-line-by-characters`, category: Text · Modification, cost: 1cr) — Insert line breaks at a maximum character count, with smart word-wrap or hard-break modes. - [Find and Replace Text](https://api.miniwebtool.com/tools/find-replace-text.md) (slug: `find-replace-text`, category: Text · Modification, cost: 1cr) — Find and replace text with literal or regex patterns, case and whole-word options. - [Remove Accent](https://api.miniwebtool.com/tools/remove-accent.md) (slug: `remove-accent`, category: Text · Modification, cost: 1cr) — Remove accents and combining marks from Unicode text. - [Remove Line Numbers](https://api.miniwebtool.com/tools/remove-line-numbers.md) (slug: `remove-line-numbers`, category: Text · Modification, cost: 1cr) — Strip numeric prefixes such as line numbers from each line of text. - [Remove Lines Containing](https://api.miniwebtool.com/tools/remove-lines-containing.md) (slug: `remove-lines-containing`, category: Text · Modification, cost: 1cr) — Keep or remove lines matching a text, word, prefix, suffix, or regex pattern. - [Remove Punctuation](https://api.miniwebtool.com/tools/remove-punctuation.md) (slug: `remove-punctuation`, category: Text · Modification, cost: 1cr) — Remove or replace selected punctuation categories from text. - [Reverse Lines](https://api.miniwebtool.com/tools/reverse-lines.md) (slug: `reverse-lines`, category: Text · Modification, cost: 1cr) — Reverse the order of lines in a text block. - [Reverse Text](https://api.miniwebtool.com/tools/reverse-text.md) (slug: `reverse-text`, category: Text · Modification, cost: 1cr) — Reverse whole text, word order, each word, or line order. - [String Repeat](https://api.miniwebtool.com/tools/string-repeat.md) (slug: `string-repeat`, category: Text · Modification, cost: 1cr) — Repeat a string with separators, optional prefixes, suffixes, and numbering. - [Sort Numbers](https://api.miniwebtool.com/tools/sort-numbers.md) (slug: `sort-numbers`, category: Text · Number Lists, cost: 1cr) — Sort up to 1000 numbers and optionally remove duplicates while returning basic statistics. - [Sort Lines Alphabetically](https://api.miniwebtool.com/tools/sort-lines-alphabetically.md) (slug: `sort-lines-alphabetically`, category: Text · Sorting, cost: 1cr) — Sort text lines alphabetically, naturally, numerically, or by length. - [Sort Text By Length](https://api.miniwebtool.com/tools/sort-text-by-length.md) (slug: `sort-text-by-length`, category: Text · Sorting, cost: 1cr) — Sort text lines by character length with basic line statistics. - [CSV to SRT Converter](https://api.miniwebtool.com/tools/csv-to-srt.md) (slug: `csv-to-srt`, category: Text · Subtitles, cost: 1cr) — Convert CSV subtitle rows with start, end, and text columns to SRT. - [SRT to CSV Converter](https://api.miniwebtool.com/tools/srt-to-csv.md) (slug: `srt-to-csv`, category: Text · Subtitles, cost: 1cr) — Convert SRT subtitle content to CSV rows. - [SRT to TXT Converter](https://api.miniwebtool.com/tools/srt-to-txt.md) (slug: `srt-to-txt`, category: Text · Subtitles, cost: 1cr) — Extract plain, timestamped, JSON, or sentence text from SRT subtitles. - [Word to Phone Number Converter](https://api.miniwebtool.com/tools/word-to-phone-number-converter.md) (slug: `word-to-phone-number-converter`, category: Text · Text Conversion, cost: 1cr) — Convert words and phrases into T9 keypad phone numbers. - [Text Repeat](https://api.miniwebtool.com/tools/text-repeat.md) (slug: `text-repeat`, category: Text · Text Modification, cost: 1cr) — Repeat text multiple times with separators, numbering, and case options. - [Upside Down Text Generator](https://api.miniwebtool.com/tools/upside-down-text-generator.md) (slug: `upside-down-text-generator`, category: Text · Text Modification, cost: 1cr) — Flip text upside down using Unicode character mappings. - [Syllable Counter](https://api.miniwebtool.com/tools/syllable-counter.md) (slug: `syllable-counter`, category: Text · Text Statistics, cost: 1cr) — Count syllables per word, line, and text with haiku detection and Flesch reading ease. - [Word Frequency Analyzer](https://api.miniwebtool.com/tools/word-frequency-analyzer.md) (slug: `word-frequency-analyzer`, category: Text · Text Statistics, cost: 1cr) — Analyze word frequency, unique words, lexical diversity, and CSV output. - [Invisible Text Generator](https://api.miniwebtool.com/tools/invisible-text-generator.md) (slug: `invisible-text-generator`, category: Text · Unicode, cost: 1cr) — Generate a run of zero-width or blank Unicode characters. - [Remove Empty Lines](https://api.miniwebtool.com/tools/remove-empty-lines.md) (slug: `remove-empty-lines`, category: Text · Whitespace, cost: 1cr) — Remove blank or whitespace-only lines from text and report line reduction statistics. - [Remove Leading Trailing Spaces](https://api.miniwebtool.com/tools/remove-leading-trailing-spaces.md) (slug: `remove-leading-trailing-spaces`, category: Text · Whitespace, cost: 1cr) — Trim leading and trailing spaces or tabs from each line. - [Remove Spaces](https://api.miniwebtool.com/tools/remove-spaces.md) (slug: `remove-spaces`, category: Text · Whitespace, cost: 1cr) — Strip whitespace: all, extra, leading, trailing, or per-line. - [Anagram Generator](https://api.miniwebtool.com/tools/anagram-generator.md) (slug: `anagram-generator`, category: Text · Word Games, cost: 1cr) — Generate letter-permutation anagrams of a word and check whether two words are anagrams. - [Pig Latin Translator](https://api.miniwebtool.com/tools/pig-latin-translator.md) (slug: `pig-latin-translator`, category: Text · Word Games, cost: 1cr) — Translate English to Pig Latin and back in four dialects with qu-handling, case preservation, and Y rules. - [Is It Leap Year](https://api.miniwebtool.com/tools/is-it-leap-year.md) (slug: `is-it-leap-year`, category: Time · Calendar, cost: 1cr) — Check whether a Gregorian calendar year is a leap year. - [Countdown Timer](https://api.miniwebtool.com/tools/countdown-timer.md) (slug: `countdown-timer`, category: Time · Countdown, cost: 1cr) — Calculate an exact countdown between two ISO datetimes. - [Date to Roman Numerals Converter](https://api.miniwebtool.com/tools/date-to-roman-numerals-converter.md) (slug: `date-to-roman-numerals-converter`, category: Time · Date Format, cost: 1cr) — Convert a calendar date into Roman numeral date formats. - [Halfway Date Calculator](https://api.miniwebtool.com/tools/halfway-date-calculator.md) (slug: `halfway-date-calculator`, category: Time · Dates, cost: 1cr) — Find the midpoint and quarter points between two dates. - [Hours Calculator](https://api.miniwebtool.com/tools/hours-calculator.md) (slug: `hours-calculator`, category: Time · Duration, cost: 1cr) — Calculate gross and net hours between two times, including breaks. - [Hebrew Calendar Converter](https://api.miniwebtool.com/tools/hebrew-calendar-converter.md) (slug: `hebrew-calendar-converter`, category: Time-Date · Calendar, cost: 1cr) — Convert between Gregorian and Hebrew dates, including leap months, year kind and month lengths. - [Hijri Calendar Converter](https://api.miniwebtool.com/tools/hijri-calendar-converter.md) (slug: `hijri-calendar-converter`, category: Time-Date · Calendar, cost: 1cr) — Convert between Gregorian and Hijri (Islamic) dates with month names, sacred-month and leap-year flags. - [When Is Leap Year](https://api.miniwebtool.com/tools/when-is-leap-year.md) (slug: `when-is-leap-year`, category: Time-Date · Calendar, cost: 1cr) — Check leap-year status and nearby leap years using Gregorian rules. - [Leap Years List](https://api.miniwebtool.com/tools/leap-years-list.md) (slug: `leap-years-list`, category: Time-Date · Calendars, cost: 1cr) — List every leap year in a range using the Gregorian rule. - [Add Business Days to Date](https://api.miniwebtool.com/tools/add-business-days-to-date.md) (slug: `add-business-days-to-date`, category: Time-Date · Date Tools, cost: 1cr) — Add or subtract business days from a date, skipping weekends under a configurable workweek pattern. - [Age Calculator](https://api.miniwebtool.com/tools/age-calculator.md) (slug: `age-calculator`, category: Time-Date · Date Tools, cost: 1cr) — Exact age in years/months/days plus total days, next-birthday countdown, day born, and zodiac sign. - [Date Calculator](https://api.miniwebtool.com/tools/date-calculator.md) (slug: `date-calculator`, category: Time-Date · Date Tools, cost: 1cr) — Add or subtract years, months, weeks, and days from a date. - [Date Difference Calculator](https://api.miniwebtool.com/tools/date-difference-calculator.md) (slug: `date-difference-calculator`, category: Time-Date · Date Tools, cost: 1cr) — Calculate days, weeks, approximate months/years, and business days between two dates. - [Day of the Year Calculator](https://api.miniwebtool.com/tools/day-of-the-year-calculator.md) (slug: `day-of-the-year-calculator`, category: Time-Date · Date Tools, cost: 1cr) — Day number within the year plus days remaining, year progress, quarter, and ISO week. - [Days in Month](https://api.miniwebtool.com/tools/days-in-month.md) (slug: `days-in-month`, category: Time-Date · Date Tools, cost: 1cr) — Number of days in a given month/year with leap-year detection and calendar boundary details. - [Julian Date Converter](https://api.miniwebtool.com/tools/julian-date-converter.md) (slug: `julian-date-converter`, category: Time-Date · Date Tools, cost: 1cr) — Convert between calendar dates and Julian Date, Modified Julian Date, or Unix time. - [Time Between Two Dates](https://api.miniwebtool.com/tools/time-between-two-dates.md) (slug: `time-between-two-dates`, category: Time-Date · Date Tools, cost: 1cr) — Calculate exact elapsed time between two ISO datetimes. - [Week Number Calculator](https://api.miniwebtool.com/tools/week-number-calculator.md) (slug: `week-number-calculator`, category: Time-Date · Date Tools, cost: 1cr) — ISO 8601 and North American week numbers for a date, with week ranges, or the dates of a given ISO week. - [How Long Ago Calculator](https://api.miniwebtool.com/tools/how-long-ago-calculator.md) (slug: `how-long-ago-calculator`, category: Time-Date · Differences, cost: 1cr) — Express the gap between a date and today in years, months, weeks and days. - [Winter Solstice Day](https://api.miniwebtool.com/tools/winter-solstice-day.md) (slug: `winter-solstice-day`, category: Time-Date · Season, cost: 1cr) — Return winter solstice date/time for Northern or Southern Hemisphere, 2024-2030. - [Time Duration Calculator](https://api.miniwebtool.com/tools/time-duration-calculator.md) (slug: `time-duration-calculator`, category: Time-Date · Time Calculators, cost: 1cr) — Calculate elapsed time between two times or datetimes. - [Time to Decimal Converter](https://api.miniwebtool.com/tools/time-to-decimal-converter.md) (slug: `time-to-decimal-converter`, category: Time-Date · Time Calculators, cost: 1cr) — Convert between hours/minutes/seconds and decimal hours. - [Work Hours Calculator](https://api.miniwebtool.com/tools/work-hours-calculator.md) (slug: `work-hours-calculator`, category: Time-Date · Time Calculators, cost: 1cr) — Calculate weekly work hours, overtime, and optional pay from day entries. - [Military Time Converter](https://api.miniwebtool.com/tools/military-time-converter.md) (slug: `military-time-converter`, category: Time-Date · Time Conversion, cost: 1cr) — Convert between 12-hour, 24-hour, and military time, including the spoken military form. - [Time Zone Converter](https://api.miniwebtool.com/tools/time-zone-converter.md) (slug: `time-zone-converter`, category: Time-Date · Time Conversion, cost: 1cr) — Convert a local date/time between IANA time zones with DST-aware offsets, to one or more targets. - [Unix Time Converter](https://api.miniwebtool.com/tools/unix-time-converter.md) (slug: `unix-time-converter`, category: Time-Date · Time Conversion, cost: 1cr) — Convert between Unix timestamps and UTC ISO datetimes. - [CPC Calculator](https://api.miniwebtool.com/tools/cpc-calculator.md) (slug: `cpc-calculator`, category: Webmaster · Advertising, cost: 1cr) — Calculate CPC, CPM, or CTR from two known campaign metrics. - [CPM Calculator](https://api.miniwebtool.com/tools/cpm-calculator.md) (slug: `cpm-calculator`, category: Webmaster · Advertising, cost: 1cr) — Calculate campaign cost, CPM, or impressions from two known advertising metrics. - [Value of A Visitor Calculator](https://api.miniwebtool.com/tools/value-of-a-visitor-calculator.md) (slug: `value-of-a-visitor-calculator`, category: Webmaster · Analytics, cost: 2cr) — Calculate website visitor value, conversion rate, annualized revenue, and traffic ROI. - [CSS Box Shadow Generator](https://api.miniwebtool.com/tools/css-box-shadow-generator.md) (slug: `css-box-shadow-generator`, category: Webmaster · Css, cost: 1cr) — Generate a CSS box-shadow declaration from numeric shadow controls. - [CSS Compressor](https://api.miniwebtool.com/tools/css-compressor.md) (slug: `css-compressor`, category: Webmaster · Css, cost: 1cr) — Minify CSS and return compression statistics. - [JSON String Escape/Unescape](https://api.miniwebtool.com/tools/json-string-escape-unescape.md) (slug: `json-string-escape-unescape`, category: Webmaster · Encoding, cost: 1cr) — Escape or unescape JSON string content deterministically. - [HTML Beautifier](https://api.miniwebtool.com/tools/html-beautifier.md) (slug: `html-beautifier`, category: Webmaster · Html, cost: 1cr) — Indent and align HTML, or minify it, preserving the contents of pre, script, style and textarea. - [HTML Compressor](https://api.miniwebtool.com/tools/html-compressor.md) (slug: `html-compressor`, category: Webmaster · Html, cost: 1cr) — Compress HTML by removing comments and extra whitespace. - [HTML Entity Encoder Decoder](https://api.miniwebtool.com/tools/html-entity-encoder-decoder.md) (slug: `html-entity-encoder-decoder`, category: Webmaster · Html, cost: 1cr) — Encode or decode HTML entities for text and markup snippets. - [HTML to Markdown Converter](https://api.miniwebtool.com/tools/html-to-markdown-converter.md) (slug: `html-to-markdown-converter`, category: Webmaster · Html, cost: 1cr) — Convert HTML into Markdown, handling headings, emphasis, links, images, lists, blockquotes, code blocks, and tables, with script and style content removed. - [HTML to Text Converter](https://api.miniwebtool.com/tools/html-to-text-converter.md) (slug: `html-to-text-converter`, category: Webmaster · Html, cost: 1cr) — Strip HTML tags, scripts, styles, and comments to extract plain text, with tag/script/style/comment counts and a size comparison. - [IP Address to Binary Converter](https://api.miniwebtool.com/tools/ip-address-to-binary-converter.md) (slug: `ip-address-to-binary-converter`, category: Webmaster · Ip, cost: 1cr) — Convert IPv4 or IPv6 addresses to padded binary forms. - [.htaccess Redirect Generator](https://api.miniwebtool.com/tools/htaccess-redirect-generator.md) (slug: `htaccess-redirect-generator`, category: Webmaster · Redirects, cost: 1cr) — Generate Apache rules for path redirects, HTTPS, hostname normalization, or IP blocking. - [Hreflang Tag Generator](https://api.miniwebtool.com/tools/hreflang-tag-generator.md) (slug: `hreflang-tag-generator`, category: Webmaster · Seo, cost: 1cr) — Generate hreflang link tags, HTTP Link headers, and sitemap XML from language and URL pairs. - [Keyword Density Checker](https://api.miniwebtool.com/tools/keyword-density-checker.md) (slug: `keyword-density-checker`, category: Webmaster · Seo, cost: 1cr) — One-, two- and three-word keyword density with stop-word filtering and word counts. - [Meta Tag Generator](https://api.miniwebtool.com/tools/meta-tag-generator.md) (slug: `meta-tag-generator`, category: Webmaster · Seo, cost: 1cr) — Build SEO, Open Graph, and Twitter Card meta tags with inherited defaults, length checks, and Google, Facebook, and Twitter preview data. - [Robots.txt Generator](https://api.miniwebtool.com/tools/robots-txt-generator.md) (slug: `robots-txt-generator`, category: Webmaster · Seo, cost: 1cr) — Generate a robots.txt from allow/disallow paths, extra user-agent groups, and sitemaps, or validate an existing file for errors and crawler warnings. - [URL Slug Generator](https://api.miniwebtool.com/tools/url-slug-generator.md) (slug: `url-slug-generator`, category: Webmaster · Seo, cost: 1cr) — Generate an SEO-friendly URL slug from a title or phrase. - [XML Sitemap Generator](https://api.miniwebtool.com/tools/xml-sitemap-generator.md) (slug: `xml-sitemap-generator`, category: Webmaster · Seo, cost: 1cr) — Generate a validated XML sitemap from paths or URLs with lastmod, change frequency, and priority. ## Using from an agent Connect to https://api.miniwebtool.com/v1/mcp over the Model Context Protocol (JSON-RPC 2.0 over HTTP). Every endpoint in the catalog is exposed as an MCP tool with the same inputSchema it has in OpenAPI. ## License The API is a commercial service. Calling it requires an API key and is governed by the usage terms. Scraping / redistribution of the catalog is not permitted without a plan.