∑ Math and geometry

Pythagorean theorem calculator

Find the missing side of a right triangle.

Rules reviewed: 2026-10-13BS / EN
01

Your inputs

Starting values are an example. Replace them with your own.

Your inputs stay in your browser.

02

Your result

Enter your details and run the calculation.

METHOD

How it is calculated

a²+b²=c², where c is the hypotenuse.

TRACEABLE

Sources and validity

Basic arithmetic or geometry using the formula shown. Uses only your inputs.

How we maintain data ↗