The Pythagorean theorem calculator helps you find the missing side of a right triangle. Simply enter two known sides and instantly calculate the third side using the famous formula a² + b² = c².
- Enter the length of leg a (one of the shorter sides)
- Enter the length of leg b (the other shorter side)
- The calculator instantly shows the hypotenuse (c)
- View the step-by-step solution to understand the calculation
- Calculate hypotenuse from two legs
- Step-by-step solution display
- Visual triangle preview
- Support for multiple units (cm, m, in, ft)
- Real-time calculation as you type
- What is the Pythagorean theorem?
- 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): a² + b² = c².
- Which side is the hypotenuse?
- The hypotenuse is the longest side of a right triangle, located opposite the 90-degree angle.
- Can I find a leg if I know the hypotenuse?
- Yes, use the general Triangle Calculator tab to solve for any missing side when you know two sides.
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