What is the Pythagorean Theorem Calculator?
In a right triangle, the square of the longest side (the hypotenuse c) equals the sum of the squares of the other two sides: a² + b² = c². Enter any two sides and this calculator finds the third, shows the working and also gives the area, perimeter and angles.
Builders use it to check that corners are square (the 3-4-5 rule), and students use it in geometry and trigonometry.
How to use the Pythagorean Theorem Calculator
- Enter any two sides and leave the unknown side empty.
- Read the missing side with the step-by-step working.
Common Pythagorean triples
- 3, 4, 5
- 5, 12, 13
- 8, 15, 17
- 7, 24, 25
This Pythagorean Theorem Calculator is 100% free, needs no signup and runs privately in your browser – on phone, tablet or computer.
Last updated: · By NodifyTech