Pythagorean Theorem Calculator
Find the missing side of a right triangle. Enter any two sides to find the third.
Result
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Enter values and click calculate
Common Pythagorean Triples
The Pythagorean Theorem
In a right triangle, the square of the hypotenuse equals the sum of squares of the other two sides.
a² + b² = c²
Finding Each Side
- Hypotenuse: c = √(a² + b²)
- Leg a: a = √(c² − b²)
- Leg b: b = √(c² − a²)