Pythagoras' Theorem Calculator
Solve a² + b² = c² for any side of a right triangle.
About this calculator
The Pythagoras' Theorem Calculator on NumberCals is a free, mobile-friendly tool for anyone needing to solve a² + b² = c² for any side of a right triangle. Enter your values in the form below and the result is computed instantly — no sign-up, no installation, no waiting.
Formula used
a² + b² = c²
What you'll need
- Solve for
- Side a (e.g. 3)
- Side b (e.g. 4)
- Hypotenuse c (e.g. 5)
What you'll get
- Result
- Solved For
Formula
a² + b² = c²
Result
Frequently Asked Questions
What's a right triangle? +
A triangle with one 90° angle. The side opposite the right angle is the hypotenuse — always the longest side.
Famous Pythagorean triples? +
(3, 4, 5), (5, 12, 13), (8, 15, 17), (7, 24, 25). Integer-sided right triangles.
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