Pythagorean Theorem Calculator △

a² + b² = c²
a, b = legs (sides)
c = hypotenuse (longest side)

About Pythagorean Theorem

Calculate the missing side of a right-angled triangle. Essential for geometry, construction, and navigation.

Features

  • Find Hypotenuse (c).
  • Find Leg (a or b).
  • Instant calculation.
  • Visual formula reference.

How to Use

  1. Select which side you want to find.
  2. Enter the lengths of the other two sides.
  3. The missing side is calculated automatically.

Formula

a² + b² = c²

where c is the hypotenuse and a, b are the legs.