Pythagorean Theorem Calculator
Free online Pythagorean Theorem Calculator.
Calculator
How to Use
- Enter the required values
- Click Calculate to see the result
- Review the detailed output
Formula
a^2 + b^2 = c^2, where c = hypotenuse. Find c: c = sqrt(a^2 + b^2). Find a: a = sqrt(c^2 - b^2). Applies only to right triangles.
Example Calculations
Find Hypotenuse
Input: a = 3, b = 4
Result: c = 5 (classic 3-4-5 triangle)
Find a Leg
Input: c = 13, b = 5
Result: a = 12 (5-12-13 triangle)
Real-World
Input: TV: width 50 inches, height 28.125 inches
Result: Diagonal: 57.36 inches (approx 57-inch TV)
About This Calculator
Free online pythagorean theorem calculator. Calculate instantly in your browser with our easy-to-use tool. No sign-up required.
Our pythagorean theorem calculator is free, easy to use, and provides instant results. All calculations are performed in your browser for privacy and speed.
Related Calculators
Frequently Asked Questions
What is the Pythagorean theorem?
In a right triangle, a^2 + b^2 = c^2, where c is the hypotenuse.
How to find the hypotenuse?
Square both legs, add, take square root. a=3, b=4, c = sqrt(25) = 5.
What are Pythagorean triples?
Integer sets satisfying the theorem: (3,4,5), (5,12,13), (8,15,17). Multiples also work.
Works for non-right triangles?
No. Use Law of Cosines for non-right: c^2 = a^2 + b^2 - 2ab*cos(C).
Real-life uses?
Construction (square corners), navigation, computer graphics, and sports analysis.