Geometry

Pythagorean Theorem Calculator

Calculate sides of a right triangle using the Pythagorean theorem

How to Use
  1. Select the side of the right triangle you want to calculate: Hypotenuse (c), Leg (a), or Leg (b).
  2. Enter the lengths of the other two sides.
  3. Click Calculate to compute the missing side.

Formula

Pythagorean Theorem formulas:

  • Hypotenuse (c): c = √(a² + b²)
  • Leg (a): a = √(c² - b²)
  • Leg (b): b = √(c² - a²)

Note: The hypotenuse (c) must always be longer than either leg (a or b).