Pythagorean Theorem Calculator
⚡ Solve right triangles instantly. Find hypotenuse or any leg with visual diagram and step-by-step solutions. 100% free.
The Best Pythagorean Theorem Calculator
Our Pythagorean theorem calculator is designed for students who want to actually understand math. Find the missing side of ANY right triangle with a visual diagram and detailed step-by-step solutions. a² + b² = c² has never been easier to apply! Perfect for geometry homework, construction, and real-world applications. No signup, no ads, just instant accurate results.
Pythagorean Theorem
a² + b² = c²a and b are legs, c is the hypotenuse
Find Hypotenuse
c = √(a² + b²)Square root of sum of squares
Find Leg
a = √(c² - b²)Square root of difference of squares
Examples
Classic 3-4-5 Triangle
Find missing leg
Frequently Asked Questions
Is this Pythagorean calculator free?
Yes! 100% free with no signup required and no ads.
What is the hypotenuse?
The hypotenuse is the longest side of a right triangle, opposite to the 90° angle. It's always across from the right angle.
Can I use this for any triangle?
No, the Pythagorean theorem only works for right triangles (triangles with one 90° angle).