Math Calculators
67+ free math calculators
Every tool has its own page — percentage, fractions, GCD, LCM, scientific, geometry, finance, and more.
➕ Basic Math
Addition Calculator
Add two numbers instantly.
OpenSubtraction Calculator
Subtract one number from another.
OpenMultiplication Calculator
Multiply two numbers.
OpenDivision Calculator
Divide two numbers and see quotient and remainder.
OpenExponent Calculator
Calculate base raised to a power (aⁿ).
OpenSquare Root Calculator
Find the square root of any positive number.
OpenCube Root Calculator
Find the cube root of a number.
OpenSquare Calculator
Square any number (n²).
OpenCube Calculator
Cube any number (n³).
OpenModulo Calculator
Find the remainder after division (a mod b).
OpenAbsolute Value Calculator
Get the absolute value |n| of a number.
OpenReciprocal Calculator
Find 1/n for any non-zero number.
Open% Fractions & Percent
Percentage Calculator
Find percent of a number, what percent one number is of another, and percent change.
OpenFraction Calculator
Add, subtract, multiply, or divide fractions and simplify the result.
OpenWhat Percent Of Calculator
What percent is A of B?
OpenPercent Change Calculator
Find percent increase or decrease between two values.
OpenRatio Calculator
Simplify a ratio a : b to lowest terms.
OpenProportion Calculator
Solve proportions a/b = c/x for the missing value.
OpenMixed Number Calculator
Convert between mixed numbers and improper fractions.
OpenDecimal to Fraction Calculator
Convert a decimal into a simplified fraction.
OpenFraction to Decimal Calculator
Convert a fraction to a decimal.
OpenFraction to Percent Calculator
Convert a fraction into a percentage.
Open🔢 Number Tools
GCD Calculator
Find the Greatest Common Divisor (HCF) of two or more numbers.
OpenLCM Calculator
Find the Least Common Multiple of two or more numbers.
OpenFactorial Calculator
Calculate n! for whole numbers.
OpenPrime Number Checker
Check if a number is prime and see its factors.
OpenFactors Calculator
List all factors of a whole number.
OpenPrime Factors Calculator
Break a number into prime factors.
OpenEven or Odd Checker
Quickly check if a number is even or odd.
OpenRounding Calculator
Round a number to a chosen number of decimal places.
OpenPermutation Calculator
Calculate P(n, r) = n! / (n−r)!.
OpenCombination Calculator
Calculate C(n, r) = n! / (r!(n−r)!).
Open𝑥 Algebra
Quadratic Equation Solver
Solve ax² + bx + c = 0 with the quadratic formula.
OpenSlope Calculator
Find the slope between two points.
OpenDistance Formula Calculator
Distance between two coordinate points.
OpenMidpoint Calculator
Find the midpoint of a line segment.
OpenLinear Equation Solver
Solve ax + b = c for x.
Open📐 Geometry
Pythagorean Theorem Calculator
Find the missing side of a right triangle.
OpenArea of Rectangle Calculator
Area and perimeter of a rectangle.
OpenArea of Circle Calculator
Area and circumference from radius.
OpenArea of Triangle Calculator
Area of a triangle from base and height.
OpenArea of Square Calculator
Area and perimeter of a square.
OpenVolume of Cube Calculator
Volume and surface area of a cube.
OpenVolume of Cylinder Calculator
Volume of a cylinder from radius and height.
OpenVolume of Sphere Calculator
Volume and surface area of a sphere.
OpenCircumference Calculator
Circumference and area of a circle.
Open📊 Statistics
Average Calculator
Calculate the mean (average) of a list of numbers.
OpenMean Calculator
Calculate the arithmetic mean of your data.
OpenMedian Calculator
Find the median (middle value) of a list.
OpenMode Calculator
Find the mode (most frequent value).
OpenRange Calculator
Find the range (max − min) of numbers.
OpenWeighted Average Calculator
Compute a weighted mean from values and weights.
OpenStandard Deviation Calculator
Calculate population or sample standard deviation.
OpenProbability Calculator
Compute simple probability: favorable ÷ total.
Open💰 Money & Finance
Simple Interest Calculator
Calculate simple interest and final amount.
OpenCompound Interest Calculator
Compound interest and final amount over time.
OpenDiscount Calculator
Sale price after a percent discount.
OpenTip Calculator
Calculate tip and total bill, optionally split.
OpenSales Tax Calculator
Add sales tax to a price.
OpenProfit Margin Calculator
Profit amount and profit percent from cost and sell price.
Open🔬 Scientific
Scientific Calculator
Full scientific calculator with sin, cos, tan, log, powers, and roots.
OpenSpeed Distance Time Calculator
Solve for speed, distance, or time.
OpenTemperature Converter
Convert Celsius ↔ Fahrenheit ↔ Kelvin.
OpenBMI Calculator
Body Mass Index from height and weight.
OpenAge Calculator
Exact age in years, months, and days from a birth date.
OpenLogarithm Calculator
Common, natural, or custom-base logarithms.
OpenTrigonometry Calculator
sin, cos, tan of an angle in degrees or radians.
Open