Math calculators

Percentages, averages, geometry, and everyday arithmetic.

Find X% of a number, or what percent one number is of another.

Percent increase or decrease between two values.

Arithmetic mean of a comma-separated list of numbers.

Simplify a:b and scale a ratio to a target total.

Principal square root of a non-negative number.

Area and circumference from radius.

Area from base and height.

Find the missing side of a right triangle.