Math Calculators
Percentages, geometry, statistics and general-purpose math tools. Choose a calculator below — every tool runs instantly in your browser, with no sign-up required.
Percentage Calculator
Solve the three most common percentage problems instantly.
Fraction Calculator
Add, subtract, multiply or divide two fractions and simplify the result.
Average Calculator (Mean, Median, Mode, Range)
Find the mean, median, mode and range of a list of numbers.
Standard Deviation Calculator
Calculate the standard deviation and variance of a data set, sample or population.
Triangle Calculator
Find a triangle's area, perimeter and angles from three known sides.
Area Calculator
Calculate the area of a square, rectangle, circle, triangle or trapezoid.
Volume Calculator
Calculate the volume of a cube, box, cylinder, sphere or cone.
Quadratic Formula Calculator
Solve any quadratic equation ax² + bx + c = 0 for its real or complex roots.
Exponent Calculator
Calculate any base raised to any power, including negative and fractional exponents.
Random Number Generator
Generate one or more random numbers within a custom range.