Pythagorean Theorem Calculator

Calculate the length of a side in a right triangle using the Pythagorean theorem. Enter the lengths of any two sides below.

What is the Pythagorean Theorem?

The Pythagorean theorem states that in a right triangle, the square of the hypotenuse (c) is equal to the sum of the squares of the other two sides (a and b): c2 = a2 + b2.

Formula

c = √(a2 + b2)

Applications