Math & Science
Pythagorean Theorem Calculator
Calculate sides of right triangle using a² + b² = c²
Created and maintained by: CalcTago Editorial TeamLast updated: 2026-02-13
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
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Frequently asked questions
What does the Pythagorean Theorem Calculator do?
It helps you calculate sides of right triangle using a² + b² = c².
What inputs do I need?
Enter Side A and Side B.
Are decimals supported?
Yes, you can use decimal values where appropriate.
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About this tool
This Pythagorean Theorem Calculator turns your inputs into practical results. Provide Side A and Side B to calculate Hypotenuse.
Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.