Math Calculators

30-60-90 Triangle Calculator

Find the other two sides of a 30-60-90 right triangle given the length of the short leg (opposite 30°), in the unit of your choice.

Long leg (opposite 60°) —

Hypotenuse (opposite 90°) —

About the 30-60-90 Triangle Calculator

A 30-60-90 triangle is a special right triangle whose side lengths always follow a fixed ratio, determined entirely by the shortest side. The short leg, long leg and hypotenuse each have their own unit selector, so you can enter one unit and read results in another.

Formula: If the short leg = s, then the long leg = s√3 and the hypotenuse = 2s