For the complete documentation index, see llms.txt.

Math API

208 endpoints — Percentage, unit conversion, geometry, and sequences. Same auth, same credit pool, same JSON envelope. Use them directly from apps, content sites, workflows, or agents without rebuilding formulas, validation, and docs for each tool.

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Advanced
Complementary Error Function Calculatorcomplementary-error-function-calculator
Calculate erf(x), erfc(x), and related error-function values.
1cr · v2026-04-22
Exponential Decay Calculatorexponential-decay-calculator
Solve continuous exponential decay equations for final amount, initial amount, rate, or time.
1cr · v2026-04-22
Exponential Growth Calculatorexponential-growth-calculator
Solve continuous exponential growth equations for final amount, initial amount, rate, or time.
1cr · v2026-04-22
Advanced Math
Antilog Calculatorantilog-calculator
Calculate an antilogarithm as base raised to an exponent.
1cr · v2026-04-22
Algebra
Absolute Value Equation Solverabsolute-value-equation-solver
Solve equations of the form |a*x + b| = c.
1cr · v2026-04-22
Absolute Value Inequality Solverabsolute-value-inequality-solver
Solve inequalities of the form |a*x + b| compared with c.
1cr · v2026-04-22
Completing the Square Calculatorcompleting-the-square-calculator
Convert a quadratic to vertex form and solve by completing the square.
1cr · v2026-04-22
Cubic Equation Solvercubic-equation-solver
Solve ax^3 + bx^2 + cx + d = 0 and return all real or complex roots.
1cr · v2026-04-22
Slope Intercept Form Calculatorslope-intercept-form-calculator
Build slope-intercept and standard-form line equations from m and b.
1cr · v2026-04-22
Square Root Calculatorsquare-root-calculator
Calculate the principal and negative square roots of a non-negative number.
1cr · v2026-04-22
X and Y Intercept Calculatorx-y-intercept-calculator
Find x- and y-intercepts for a linear equation ax + by + c = 0.
1cr · v2026-04-22
Angles
Radian to Degree Converterradian-to-degree-converter
Convert radians, fractions, or pi expressions to degrees.
1cr · v2026-04-22
Area
Acreage Calculatoracreage-calculator
Calculate land acreage from rectangle, triangle, or circle dimensions.
1cr · v2026-04-22
Hectares to Acres Converterhectares-to-acres-converter
Convert hectares to acres and related land-area units.
1cr · v2026-04-22
Square Feet to Acres Convertersquare-feet-to-acres-converter
Convert square feet to acres and related land-area units.
1cr · v2026-04-22
Square Footage Calculatorsquare-footage-calculator
Calculate square footage for common room, lot, and curved shapes.
1cr · v2026-04-22
Square Meters to Acres Convertersquare-meters-to-acres-converter
Convert square meters to acres and related land-area units.
1cr · v2026-04-22
Square Miles to Acres Convertersquare-miles-to-acres-converter
Convert square miles to acres and related land-area units.
1cr · v2026-04-22
Basic Math
Absolute Value Calculatorabsolute-value-calculator
Calculate the absolute value of a real or complex number.
1cr · v2026-04-22
Cube and Cube Root Calculatorcube-and-cube-root-calculator
Calculate a number's cube and cube root.
1cr · v2026-04-22
Cube Root Calculatorcube-root-calculator
Calculate the real cube root of a finite number.
1cr · v2026-04-22
Even or Odd Number Checkereven-or-odd-number-checker
Check whether one or more integers are even or odd.
1cr · v2026-04-22
Combinatorics
Binomial Coefficient Calculatorbinomial-coefficient-calculator
Calculate C(n, k), the number of combinations choosing k items from n.
1cr · v2026-04-22
Combination Calculatorcombination-calculator
Calculate combinations C(n, k).
1cr · v2026-04-22
Complex Numbers
Complex Numbers Calculatorcomplex-numbers-calculator
Add, subtract, multiply, or divide two complex numbers.
1cr · v2026-04-22
Conics
Hyperbola Calculatorhyperbola-calculator
Calculate standard-form hyperbola vertices, foci, eccentricity, and asymptotes.
1cr · v2026-04-22
Construction
Flooring Calculatorflooring-calculator
Estimate flooring material units, waste allowance, and optional cost.
1cr · v2026-04-22
Insulation Calculatorinsulation-calculator
Estimate insulation R-value target, thickness, material quantity, and cost range.
1cr · v2026-04-22
Cooking
Butter to Oil Converterbutter-to-oil-converter
Convert butter quantities to practical oil equivalents for baking.
1cr · v2026-04-22
Education
Final Grade Calculatorfinal-grade-calculator
Calculate the final exam score needed to reach a target course grade.
1cr · v2026-04-22
Electronics
LED Resistor Calculatorled-resistor-calculator
Calculate LED current-limiting resistor values and power ratings.
1cr · v2026-04-22
Exponents
Half Life Calculatorhalf-life-calculator
Solve exponential decay for remaining amount, initial amount, elapsed time, or half-life.
1cr · v2026-04-22
Fractions
Comparing Fractions Calculatorcomparing-fractions-calculator
Compare two fractions or mixed numbers using a common denominator.
1cr · v2026-04-22
Decimal to Fraction Calculatordecimal-to-fraction-calculator
Convert a decimal or parenthesized repeating decimal to a fraction.
1cr · v2026-04-22
Equivalent Fractions Calculatorequivalent-fractions-calculator
Generate equivalent fractions or check whether two fractions are equivalent.
1cr · v2026-04-22
Fraction Simplifierfraction-simplifier
Reduce a fraction to lowest terms and return GCF, mixed number, decimal, percentage, and equivalents.
1cr · v2026-04-22
Fraction to Decimal Calculatorfraction-to-decimal-calculator
Convert proper, improper, or mixed fractions to decimals and detect repeating decimal patterns.
1cr · v2026-04-22
Fraction to Mixed Number Converterfraction-to-mixed-number-converter
Convert an improper fraction to a simplified mixed number.
1cr · v2026-04-22
Fraction to Percent Converterfraction-to-percent-converter
Convert proper, improper, or mixed fractions to percentages with configurable decimal places.
1cr · v2026-04-22
Functions
Hyperbolic Functions Calculatorhyperbolic-functions-calculator
Calculate sinh, cosh, tanh and reciprocal hyperbolic functions.
1cr · v2026-04-22
Games
DPS Calculatordps-calculator
Calculate raw, sustained, critical-hit, and headshot damage per second.
1cr · v2026-04-22
Geometry
3D Distance Calculator3d-distance-calculator
Calculate 3D Euclidean distance, midpoint, direction cosines, and related distances.
1cr · v2026-04-22
Angle Bisector Calculatorangle-bisector-calculator
Calculate triangle angle bisectors, angles, area, and inradius from side lengths.
1cr · v2026-04-22
Arc Length Calculatorarc-length-calculator
Solve arc length, radius, or central angle for a circle sector.
1cr · v2026-04-22
Area of a Circle Calculatorarea-of-a-circle-calculator
Calculate circle radius, diameter, circumference, and area from one value.
1cr · v2026-04-22
Area of a Parallelogram Calculatorarea-of-a-parallelogram-calculator
Find parallelogram area from base-height, sides-angle, or diagonals-angle inputs.
1cr · v2026-04-22
Area of a Sector Calculatorarea-of-a-sector-calculator
Calculate sector area, arc length, perimeter, chord, and segment area.
1cr · v2026-04-22
Area of a Trapezoid Calculatorarea-of-a-trapezoid-calculator
Calculate trapezoid area from two parallel bases and height.
1cr · v2026-04-22
Area of an Ellipse Calculatorarea-of-an-ellipse-calculator
Calculate ellipse area, Ramanujan perimeter, foci, and eccentricity.
1cr · v2026-04-22
Area of Equilateral Triangle Calculatorarea-of-equilateral-triangle-calculator
Calculate equilateral-triangle side, area, height, perimeter, and radii.
1cr · v2026-04-22
Cartesian to Polar Coordinates Convertercartesian-to-polar-converter
Convert Cartesian x-y coordinates to polar radius and angle.
1cr · v2026-04-22
Circle Calculatorcircle-calculator
Calculate circle radius, diameter, circumference, area, and optional arc/sector values.
1cr · v2026-04-22
Circumscribed Circle Circumcircle Calculatorcircumscribed-circle-circumcircle-calculator
Calculate the circumcircle of a triangle from side lengths or coordinates.
1cr · v2026-04-22
Cone Flat Pattern Template Generatorcone-flat-pattern-template-generator
Calculate unrolled cone or frustum flat-pattern dimensions.
1cr · v2026-04-22
Conic Section Identifierconic-section-identifier
Classify a general second-degree equation as a conic section.
1cr · v2026-04-22
Coordinate Geometry Distance Calculatorcoordinate-geometry-distance-calculator
Calculate distance, midpoint, slope, and line equations between two points.
1cr · v2026-04-22
Distance Between Two Points Calculatordistance-between-two-points-calculator
Calculate 2D point distance, midpoint, slope, and line equation.
1cr · v2026-04-22
Ellipse Circumference Calculatorellipse-circumference-calculator
Calculate ellipse circumference with several common approximations.
1cr · v2026-04-22
Euler Characteristic Calculatoreuler-characteristic-calculator
Calculate Euler characteristic V - E + F and classify common surfaces.
1cr · v2026-04-22
Frustum Calculatorfrustum-calculator
Calculate volume and surface area for a conical frustum.
1cr · v2026-04-22
Golden Ratio Calculatorgolden-ratio-calculator
Calculate golden-ratio segments from total, larger, or smaller segment.
1cr · v2026-04-22
Golden Rectangle Calculatorgolden-rectangle-calculator
Calculate golden rectangle dimensions, area, perimeter, and aspect ratio.
1cr · v2026-04-22
Golden Section Calculatorgolden-section-calculator
Find the golden-section points within an interval.
1cr · v2026-04-22
Great Circle Distance Calculatorgreat-circle-distance-calculator
Calculate great-circle distance, bearing, and midpoint between two coordinates.
1cr · v2026-04-22
Heron's Formula Calculatorheron-s-formula-calculator
Calculate triangle area from three side lengths using Heron's formula.
1cr · v2026-04-22
Hypotenuse Calculatorhypotenuse-calculator
Calculate the hypotenuse and basic right-triangle measures from two legs.
1cr · v2026-04-22
Pythagorean Theorem Calculatorpythagorean-theorem-calculator
Find a missing right-triangle side and calculate area, perimeter, and angles.
1cr · v2026-04-22
Rectangle Calculatorrectangle-calculator
Calculate rectangle area, perimeter, diagonal, radii, and aspect ratio from two known values.
1cr · v2026-04-22
Regular Polygon Calculatorregular-polygon-calculator
Calculate regular polygon area, perimeter, apothem, circumradius, angles, and diagonal count.
1cr · v2026-04-22
Slope Calculatorslope-calculator
Calculate slope, angle, intercepts, and line equation from two points.
1cr · v2026-04-22
Square Calculatorsquare-calculator
Calculate square side length, area, perimeter, diagonal, inradius, and circumradius from one known value.
1cr · v2026-04-22
Geometry Calculators
Torus Calculatortorus-calculator
Calculate torus volume, surface area, and key radii.
1cr · v2026-04-22
Home
Aquarium Substrate Calculatoraquarium-substrate-calculator
Estimate aquarium substrate volume, weight, and bag counts.
1cr · v2026-04-22
Length
Feet and Inches to Cm Converterfeet-and-inches-to-cm-converter
Convert feet and inches to total inches, centimeters, meters, and height comparison percentages.
1cr · v2026-04-22
Linear Algebra
Angle Between Vectors Calculatorangle-between-vectors-calculator
Calculate the angle between two 2D or 3D vectors.
1cr · v2026-04-22
Characteristic Polynomial Calculatorcharacteristic-polynomial-calculator
Calculate characteristic polynomial coefficients for a square matrix.
1cr · v2026-04-22
Cholesky Decomposition Calculatorcholesky-decomposition-calculator
Decompose a symmetric positive-definite matrix into A = L L^T.
1cr · v2026-04-22
Column Space Calculatorcolumn-space-calculator
Find matrix pivot columns, rank, nullity, RREF, and a column-space basis.
1cr · v2026-04-22
Cramer's Rule Calculatorcramer-s-rule-calculator
Solve 2x2 or 3x3 linear systems with Cramer's rule.
1cr · v2026-04-22
Cross Product Calculatorcross-product-calculator
Calculate the 3D cross product, magnitude, areas, and angle.
1cr · v2026-04-22
Determinant Calculatordeterminant-calculator
Calculate the determinant, trace, rank, and invertibility of a square matrix.
1cr · v2026-04-22
Dot Product Calculatordot-product-calculator
Calculate the dot product, magnitudes, angle, and vector projection.
1cr · v2026-04-22
Unit Vector Calculatorunit-vector-calculator
Normalize a vector and return its unit vector.
1cr · v2026-04-22
Vector Magnitude Calculatorvector-magnitude-calculator
Calculate the Euclidean magnitude and unit vector for any vector.
1cr · v2026-04-22
Vector Projection Calculatorvector-projection-calculator
Project one vector onto another and compute the orthogonal component.
1cr · v2026-04-22
Number Systems
Base Converterbase-converter
Convert integers between bases 2 through 36.
1cr · v2026-04-22
Base-N Calculatorbase-n-calculator
Convert an integer from any base 2 through 36 to every other base.
1cr · v2026-04-22
BCD to Binary Converterbcd-to-binary-converter
Convert 8421 BCD nibbles to decimal and binary.
1cr · v2026-04-22
BCD to Decimal Converterbcd-to-decimal-converter
Convert binary-coded decimal nibbles to a decimal integer.
1cr · v2026-04-22
BCD to Hex Converterbcd-to-hex-converter
Convert BCD to hexadecimal or hexadecimal to BCD.
1cr · v2026-04-22
Binary Calculatorbinary-calculator
Run binary arithmetic and bitwise operations.
1cr · v2026-04-22
Binary to BCD Converterbinary-to-bcd-converter
Convert an integer binary value to binary-coded decimal.
1cr · v2026-04-22
Binary to Decimal Converterbinary-to-decimal-converter
Convert a binary number to decimal, hexadecimal, and octal.
1cr · v2026-04-22
Binary to Gray Code Converterbinary-to-gray-code-converter
Convert an integer binary value to Gray code.
1cr · v2026-04-22
Binary to Hex Converterbinary-to-hex-converter
Convert a binary number to hexadecimal with nibble grouping.
1cr · v2026-04-22
Binary to Octal Converterbinary-to-octal-converter
Convert a binary number to octal using 3-bit grouping.
1cr · v2026-04-22
Decimal to Binary Converterdecimal-to-binary-converter
Convert a decimal integer to binary with grouped bits and division steps.
1cr · v2026-04-22
Decimal to Hex Converterdecimal-to-hex-converter
Convert a decimal integer to hexadecimal with conversion steps.
1cr · v2026-04-22
Decimal to Octal Converterdecimal-to-octal-converter
Convert a base-10 integer to octal with division steps.
1cr · v2026-04-22
Decimal to Scientific Notation Converterdecimal-to-scientific-notation-converter
Convert decimal numbers to scientific, E, and engineering notation.
1cr · v2026-04-22
Gray Code to Binary Convertergray-code-to-binary-converter
Convert Gray code to ordinary binary with XOR steps.
1cr · v2026-04-22
Hex to BCD Converterhex-to-bcd-converter
Convert a hexadecimal integer to binary-coded decimal.
1cr · v2026-04-22
Hex to Binary Converterhex-to-binary-converter
Convert a hexadecimal integer to binary.
1cr · v2026-04-22
Hex to Decimal Converterhex-to-decimal-converter
Convert a hexadecimal integer to decimal with digit breakdown.
1cr · v2026-04-22
Hex to Octal Converterhex-to-octal-converter
Convert a hexadecimal integer to octal through binary grouping.
1cr · v2026-04-22
Octal to Binary Converteroctal-to-binary-converter
Convert an octal integer to binary with per-digit mapping.
1cr · v2026-04-22
Octal to Decimal Converteroctal-to-decimal-converter
Convert an octal integer to decimal with positional breakdown.
1cr · v2026-04-22
Ratio to Percentage Calculatorratio-to-percentage-calculator
Convert ratios, fractions, or decimal divisions to percentages.
1cr · v2026-04-22
Scientific Notation to Decimal Converterscientific-notation-to-decimal-converter
Convert scientific notation to ordinary decimal notation.
1cr · v2026-04-22
Number Theory
Factorial Calculatorfactorial-calculator
Calculate factorial metadata, exact values for bounded inputs, and scientific notation.
1cr · v2026-04-22
Fibonacci Number Checkerfibonacci-number-checker
Check whether a non-negative integer is in the Fibonacci sequence.
1cr · v2026-04-22
Goldbach Conjecture Verifiergoldbach-conjecture-verifier
Verify an even integer by finding prime pairs that sum to it.
1cr · v2026-04-22
Percentage
Decimal to Percent Converterdecimal-to-percent-converter
Convert one or more decimal numbers to percentages.
1cr · v2026-04-22
Percentage Calculatorpercentage-calculator
Six percentage operations behind one endpoint, selected by mode.
1cr · v2026-04-22
Percentage Error Calculatorpercentage-error-calculator
Calculate percent error between estimated and actual values.
1cr · v2026-04-22
Physics
Acceleration Calculatoracceleration-calculator
Calculate acceleration from velocity change, distance, force, centripetal motion, or free fall.
1cr · v2026-04-22
Horsepower Calculatorhorsepower-calculator
Solve horsepower, torque, or RPM and return common power conversions.
1cr · v2026-04-22
Probability
Binomial Probability Distribution Calculatorbinomial-probability-distribution-calculator
Calculate exact and cumulative binomial probabilities.
1cr · v2026-04-22
Dice Roll Probability Calculatordice-roll-probability-calculator
Calculate exact probability metrics for sums of identical dice.
1cr · v2026-04-22
Ratios
Aspect Ratio Calculatoraspect-ratio-calculator
Simplify dimensions to a ratio, derive dimensions from a ratio, or resize proportionally.
1cr · v2026-04-22
Unit Rate Calculatorunit-rate-calculator
Calculate a unit rate or compare two unit rates.
1cr · v2026-04-22
Sequence Tools
Catalan Number Generatorcatalan-number-generator
Calculate the nth Catalan number and nearby sequence values.
1cr · v2026-04-22
Collatz Conjecture Calculatorcollatz-conjecture-calculator
Generate and analyze the deterministic Collatz hailstone sequence.
1cr · v2026-04-22
Sequences
Arithmetic Sequence Calculatorarithmetic-sequence-calculator
Calculate the nth term and partial sum of an arithmetic sequence.
1cr · v2026-04-22
Geometric Sequence Calculatorgeometric-sequence-calculator
Calculate nth term, partial sum, and sample terms for a geometric sequence.
1cr · v2026-04-22
Happy Number Calculatorhappy-number-calculator
Check whether a number is happy or list happy numbers up to a limit.
1cr · v2026-04-22
Sum of Cubes Calculatorsum-of-cubes-calculator
Calculate 1^3 + 2^3 + ... + n^3.
1cr · v2026-04-22
Sum of Squares Calculatorsum-of-squares-calculator
Calculate 1^2 + 2^2 + ... + n^2.
1cr · v2026-04-22
Sports
Bike Gear Ratio Calculatorbike-gear-ratio-calculator
Calculate bicycle gear ratio, gear inches, rollout, gain ratio, and speed.
1cr · v2026-04-22
Cricket Run Rate Calculatorcricket-run-rate-calculator
Calculate current, projected, and required cricket run rates from cricket over notation.
1cr · v2026-04-22
Usage Rate Calculatorusage-rate-calculator
Calculate basketball usage rate from player and team shot, free throw, turnover, and minute stats.
1cr · v2026-04-22
Statistics
Arithmetic Mean Calculatorarithmetic-mean-calculator
Calculate arithmetic mean, median, modes, range, variance, and standard deviation from a number list.
1cr · v2026-04-22
Average Calculatoraverage-calculator
Calculate mean, median, mode, range, variance, and optional weighted average.
1cr · v2026-04-22
Average Deviation Calculatoraverage-deviation-calculator
Calculate mean and median absolute deviation for a numeric dataset.
1cr · v2026-04-22
Coefficient of Variation Calculatorcoefficient-of-variation-calculator
Calculate coefficient of variation from sample or population standard deviation.
1cr · v2026-04-22
Cohen's d Calculatorcohens-d-calculator
Calculate Cohen's d, Hedges' g, overlap, and effect-size interpretation.
1cr · v2026-04-22
Correlation Coefficient Calculatorcorrelation-coefficient-calculator
Calculate Pearson, Spearman, and Kendall correlation coefficients.
1cr · v2026-04-22
Find Minimum and Maximumfind-minimum-maximum
Find min, max, range, mean, median, positions, and sorted values for a number list.
1cr · v2026-04-22
Five Number Summary Calculatorfive-number-summary-calculator
Calculate minimum, Q1, median, Q3, maximum, IQR, and outlier fences.
1cr · v2026-04-22
Geometric Mean Calculatorgeometric-mean-calculator
Calculate geometric mean and compare it with arithmetic, harmonic, median, minimum, and maximum values.
1cr · v2026-04-22
Harmonic Mean Calculatorharmonic-mean-calculator
Calculate harmonic mean for positive non-zero values with comparison means and reciprocal totals.
1cr · v2026-04-22
Interquartile Range Calculatorinterquartile-range-calculator
Calculate IQR, quartiles, and 1.5-IQR outlier fences.
1cr · v2026-04-22
Mean Calculatormean-calculator
Calculate arithmetic mean and supporting summary statistics.
1cr · v2026-04-22
Median Calculatormedian-calculator
Calculate the median, sorted data, quartiles, and range.
1cr · v2026-04-22
Midrange Calculatormidrange-calculator
Calculate the midpoint between the minimum and maximum of a dataset.
1cr · v2026-04-22
Mode Calculatormode-calculator
Find the mode or modes and frequency table for a numeric dataset.
1cr · v2026-04-22
Population Variance Calculatorpopulation-variance-calculator
Calculate population variance and population standard deviation.
1cr · v2026-04-22
Quartile Calculatorquartile-calculator
Calculate Q1, Q2, Q3, IQR, and outlier fences using a selected quartile method.
1cr · v2026-04-22
Root Mean Square Calculatorroot-mean-square-calculator
Calculate root mean square for a numeric list.
1cr · v2026-04-22
Sample Standard Deviation Calculatorsample-standard-deviation-calculator
Calculate sample standard deviation and optional z-score outliers.
1cr · v2026-04-22
Sample Variance Calculatorsample-variance-calculator
Calculate sample or population variance from a numeric dataset.
1cr · v2026-04-22
Standard Deviation Calculatorstandard-deviation-calculator
Calculate sample and population standard deviation with quartiles.
1cr · v2026-04-22
Variance Calculatorvariance-calculator
Calculate sample and population variance with related statistics.
1cr · v2026-04-22
Weibull Distribution Calculatorweibull-distribution-calculator
Calculate Weibull PDF/CDF/reliability, moments, and B-life values.
1cr · v2026-04-22
Z-Score Calculatorzscore-calculator
Calculate z-scores, inverse values, percentiles, and normal probabilities.
1cr · v2026-04-22
Surface Area
Surface Area of a Cone Calculatorsurface-area-of-a-cone-calculator
Calculate cone base, lateral, and total surface area from radius-height, radius-slant, or diameter-height inputs.
1cr · v2026-04-22
Surface Area of a Cube Calculatorsurface-area-of-a-cube-calculator
Calculate cube surface area and related measurements from edge, diagonal, volume, or surface area.
1cr · v2026-04-22
Trigonometry
Arccos Calculatorarccos-calculator
Calculate inverse cosine in radians and degrees.
1cr · v2026-04-22
Arcsin Calculatorarcsin-calculator
Calculate arcsine from a sine value, including degree/radian output and special-angle recognition.
1cr · v2026-04-22
Arctan Calculatorarctan-calculator
Calculate inverse tangent in radians and degrees.
1cr · v2026-04-22
Arctan2 Calculatorarctan2-calculator
Calculate atan2(y, x), normalized angle, radius, slope, and quadrant.
1cr · v2026-04-22
Cosine Calculatorcosine-calculator
Calculate cosine with radians/degrees conversion, quadrant, and special-angle recognition.
1cr · v2026-04-22
Cosecant/Secant/Cotangent Calculatorcsc-sec-cot-calculator
Calculate csc, sec, cot, sine, and cosine for an angle.
1cr · v2026-04-22
Degree to Radian Converterdegree-to-radian-converter
Convert degrees to radians with pi-fraction, quadrant, and trig values.
1cr · v2026-04-22
DMS to Decimal Degrees Converterdms-to-decimal-converter
Convert degrees, minutes, and seconds to signed decimal degrees.
1cr · v2026-04-22
Law of Cosines Calculatorlaw-of-cosines-calculator
Use the law of cosines to solve a side or included angle.
1cr · v2026-04-22
Law of Sines Calculatorlaw-of-sines-calculator
Use the law of sines to solve a side or possible angle.
1cr · v2026-04-22
Sine Calculatorsine-calculator
Calculate sine with radians/degrees conversion, quadrant, and special-angle recognition.
1cr · v2026-04-22
Tangent Calculatortangent-calculator
Calculate tangent and flag vertical-asymptote inputs.
1cr · v2026-04-22
Unit Converters
Acres to Hectares Converteracres-to-hectares-converter
Convert between acres and hectares with related area units.
1cr · v2026-04-22
Acres to Perches Converteracres-to-perches-converter
Convert acres and perches for land area calculations.
1cr · v2026-04-22
Acres to Square Feet Converteracres-to-square-feet-converter
Convert between acres and square feet with related area units.
1cr · v2026-04-22
Acres to Square Meters Converteracres-to-square-meters-converter
Convert between acres and square meters with related area units.
1cr · v2026-04-22
Acres to Square Miles Converteracres-to-square-miles-converter
Convert acres and square miles, including related land-area units.
1cr · v2026-04-22
Acres to Square Yards Converteracres-to-square-yards-converter
Convert acres and square yards, including related area units.
1cr · v2026-04-22
Angle Converterangle-converter
Convert angles between degrees, radians, gradians, turns, arcminutes, arcseconds, and milliradians.
1cr · v2026-04-22
CM to Inches Convertercm-to-inches-converter
Convert centimeters to inches, feet/inches, and nearest 1/16-inch fraction.
1cr · v2026-04-22
Cups to Tablespoons Convertercups-to-tablespoons-converter
Convert US cups and tablespoons, including teaspoons and fluid ounces.
1cr · v2026-04-22
Feet to Meters Converterfeet-to-meters-converter
Convert feet and optional inches to meters, centimeters, and millimeters.
1cr · v2026-04-22
Gallons to Cups Convertergallons-to-cups-converter
Convert US gallons and cups, with quart and pint equivalents.
1cr · v2026-04-22
Grams to Ounces Convertergrams-to-ounces-converter
Convert grams to ounces, pounds, kilograms, and milligrams.
1cr · v2026-04-22
Grams to Pounds Convertergrams-to-pounds-converter
Convert grams to pounds, ounces, and kilograms.
1cr · v2026-04-22
Inches to CM Converterinches-to-cm-converter
Convert inches to centimeters, millimeters, meters, and feet.
1cr · v2026-04-22
kg to lbs Converterkg-to-lbs-converter
Convert kilograms and pounds with ounce breakdown.
1cr · v2026-04-22
kPa to psi Converterkpa-to-psi-converter
Convert kilopascals to psi, bar, atm, and mmHg.
1cr · v2026-04-22
Liters to Cups Converterliters-to-cups-converter
Convert liters to US, metric, and imperial cups.
1cr · v2026-04-22
Meters to Feet Convertermeters-to-feet-converter
Convert meters to decimal feet and feet-and-inches.
1cr · v2026-04-22
Ounce to Gram Converterounce-to-gram-converter
Convert ounces to grams, kilograms, milligrams, and pounds.
1cr · v2026-04-22
Ounces to Cups Converterounces-to-cups-converter
Convert US fluid ounces and cups with spoon and milliliter equivalents.
1cr · v2026-04-22
Percent to PPM Converterpercent-to-ppm-converter
Convert percent to ppm or ppm to percent.
1cr · v2026-04-22
Perches to Acres Converterperches-to-acres-converter
Convert perches and acres for land area calculations.
1cr · v2026-04-22
Pounds to Grams Converterpounds-to-grams-converter
Convert pounds to grams, kilograms, ounces, and milligrams.
1cr · v2026-04-22
PPM to Percent Converterppm-to-percent-converter
Convert parts per million to percentage and related concentration scales.
1cr · v2026-04-22
Square Yards to Acres Convertersquare-yards-to-acres-converter
Convert square yards and acres, including related area units.
1cr · v2026-04-22
Tablespoons to Cups Convertertablespoons-to-cups-converter
Convert US tablespoons to cups, teaspoons, fluid ounces, and milliliters.
1cr · v2026-04-22
Tablespoons to Teaspoons Convertertablespoons-to-teaspoons-converter
Convert US tablespoons to teaspoons, cups, fluid ounces, and milliliters.
1cr · v2026-04-22
Teaspoons to Cups Converterteaspoons-to-cups-converter
Convert US teaspoons and cups, including tablespoons and fluid ounces.
1cr · v2026-04-22
Teaspoons to Tablespoons Converterteaspoons-to-tablespoons-converter
Convert US teaspoons to tablespoons, cups, fluid ounces, and milliliters.
1cr · v2026-04-22
Volume
Cups to Gallons Convertercups-to-gallons-converter
Convert US cups and gallons with related volume units.
1cr · v2026-04-22
Cups to Liters Convertercups-to-liters-converter
Convert US cups and liters with milliliter, fluid-ounce, and spoon equivalents.
1cr · v2026-04-22
Cups to Ounces Convertercups-to-ounces-converter
Convert cups and fluid ounces for US customary, US legal, imperial, or metric cups.
1cr · v2026-04-22
Cups to Quarts Convertercups-to-quarts-converter
Convert US cups and quarts with related volume units.
1cr · v2026-04-22
Cups to Teaspoons Convertercups-to-teaspoons-converter
Convert US cups and teaspoons with tablespoon and fluid-ounce equivalents.
1cr · v2026-04-22
Volume of a Cone Calculatorvolume-of-a-cone-calculator
Calculate cone volume, slant height, base area, lateral area, and total surface area.
1cr · v2026-04-22
Volume of a Cube Calculatorvolume-of-a-cube-calculator
Calculate cube volume, surface area, face area, diagonals, and total edge length.
1cr · v2026-04-22
Volume of a Pyramid Calculatorvolume-of-a-pyramid-calculator
Calculate volume, base area, slant height, and surface area for square, rectangular, or triangular pyramids.
1cr · v2026-04-22
Volume of a Rectangular Prism Calculatorvolume-of-a-rectangular-prism-calculator
Calculate rectangular prism volume, surface area, diagonals, base perimeter, and total edge length.
1cr · v2026-04-22
Volume of Ellipsoid Calculatorvolume-of-ellipsoid-calculator
Calculate ellipsoid volume, approximate surface area, cross sections, equivalent sphere radius, and shape type.
1cr · v2026-04-22