Pythagorean Theorem Calculator

Find the missing side of a right triangle. Leave the unknown side as 0.

Quick answer: Pythagorean Theorem Calculator: Find the missing side of a right triangle. Leave the unknown side as 0. Everything runs in your browser, so nothing you enter is uploaded or stored.

How to use Pythagorean Theorem Calculator

  1. Enter your values in the fields.
  2. The results update instantly as you type.
  3. Note or copy the numbers you need.

Features

Frequently asked questions

What is the Pythagorean theorem?

In a right triangle, a squared plus b squared equals c squared, where c is the longest side (the hypotenuse).

How do I find a leg?

Enter the hypotenuse and the other leg, leave the unknown at 0, and the tool finds it.

Is the Pythagorean Theorem Calculator free?

Yes. It is free, needs no signup and works on any device.

More free tools