June 11, 2026 · 4 min read

Pythagorean Theorem Calculator (Free, Instant)

Calculate the hypotenuse of any right triangle using a² + b² = c². Free, no signup.

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Given the two short sides of a right triangle, the hypotenuse is √(a² + b²). Use Pythagorean Theorem Calculator.

Other geometry: Circle Area Calculator, Triangle Area Calculator.

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Tools mentioned in this guide

Pythagorean Theorem Calculator
Calculate the hypotenuse of a right triangle (a² + b² = c²).
Circle Area Calculator
Calculate the area and circumference of a circle from radius.
Triangle Area Calculator
Calculate triangle area from base and height.

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