Math Calculators

Find a percentage of a number, one number as a percentage of another, or the whole from a known percentage.

Find the amount and percentage of an increase or decrease.

Calculate increase and percentage growth between two values.

Calculate decrease and percentage reduction between two values.

Add, subtract, multiply, and divide fractions.

Simplify a ratio and scale it to another quantity.

Calculate mean, median, mode, and range.

Calculate sample or population standard deviation and variance.

Evaluate common powers, roots, logarithms, and trigonometric functions.

Convert common length, weight, and volume units, including pints, quarts, ounces, and inches.

Calculate area for common two-dimensional shapes.

Calculate volume for common three-dimensional shapes.

Convert between Fahrenheit, Celsius, and Kelvin.

Calculate pace, speed, distance, or finish time.