Pythagorean Theorem Calculator

Find the missing side of a right triangle using the Pythagorean theorem: a² + b² = c²

What to Calculate
Enter Known Values

One leg of the right triangle

Other leg of the right triangle

Pythagorean Theorem

a² + b² = c²

The Pythagorean theorem states that in a right triangle, the square of the hypotenuse (c) equals the sum of squares of the other two sides (a and b).

  • c = √(a² + b²) - Find hypotenuse
  • a = √(c² - b²) - Find leg a
  • b = √(c² - a²) - Find leg b

Related Calculators

Solution
a² + b² = c²
Side a3
Side b4
Hypotenuse c5
Verification3² + 4² = 25