Pythagorean Theorem Calculator
Calculate the hypotenuse or missing side of a right triangle using the Pythagorean theorem.
How to Use This Calculator
Enter your values in the fields above and click "Calculate" to get instant results. This pythagorean theorem calculator provides accurate results with step-by-step explanations.
Formula
c = √(a² + b²)
Quick Examples
- a=3, b=4 → c=5
- a=5, b=12 → c=13
- a=8, b=15 → c=17
Frequently Asked Questions
What is the Pythagorean theorem?
In a right triangle, the square of the hypotenuse (c) equals the sum of the squares of the other two sides: a² + b² = c².
Can I find a missing leg instead of the hypotenuse?
Yes. If you know c and one leg, the other leg = √(c² - known_leg²).