Pythagorean Theorem Calculator
In a right triangle, the Pythagorean theorem relates the hypotenuse c to the two other sides a and b: a² + b² = c². Enter two lengths to find the third.
Enter two values and leave the third field blank.
Pourquoi utiliser cet outil ?
The Pythagorean theorem is one of the most widely used geometric calculations, in the classroom as well as in everyday life (DIY, construction, architecture). This tool automatically calculates the missing side of a right triangle from the two other sides, avoiding calculation errors and saving valuable time for students and professionals alike.
Why it's free
A discreet ad banner covers hosting costs — that's the whole business model. No account to create, no usage limit, no paid tier unlocking the real result. Calculations run in your browser, so your numbers, dates and text never leave your device.
How our tools work