Use the Pythagorean theorem to find missing sides of right triangles. Perfect for geometry, construction, and design.
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Enter Your Measurements
Results
Hypotenuse (C)
5.00
units
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Formula
c² = a² + b²; c = √(a² + b²)
How to Use This Calculator
How to Use
- 1
Enter the lengths of the two known sides (a and b).
- 2
Click calculate to find the hypotenuse (c).
Frequently Asked Questions
Frequently Asked Questions
What is the Pythagorean theorem?
It states that in a right triangle, the square of the hypotenuse equals the sum of squares of the other two sides: a² + b² = c².
What is a Pythagorean triple?
A Pythagorean triple is a set of three whole numbers that satisfy the theorem. The most famous is 3-4-5.
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About This Calculator
This calculator uses the formula: c² = a² + b²; c = √(a² + b²). All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.
Built and maintained by the CalcSmart team. Last updated March 2026.
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