Do I need to sign up?

No. The tool works without an account.

Are my data uploaded?

Compatible operations run locally in the browser.

Hypotenuse = √(leg1² + leg2²). This is the Pythagorean theorem for right triangles.

No, only for right-angled triangles (one angle of 90°).

Calculate the hypotenuse of a right triangle from the two legs using Pythagoras.

Hypotenuse

Legs 3 and 4

Leg ALeg B

Hypotenuse = √(legA² + legB²). Only for right triangles (Pythagorean theorem).

Examples

Legs 3 and 4 → 5

Legs 5 and 12 → 13

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Tool guide

Practical information to understand the result and use this tool correctly.

Calculate the hypotenuse of a right triangle from the two legs using Pythagoras.

The tool runs directly in the browser for immediate results.

Do I need to sign up?: No. The tool works without an account.
Are my data uploaded?: Compatible operations run locally in the browser.
What is the formula for the hypotenuse?: Hypotenuse = √(leg1² + leg2²). This is the Pythagorean theorem for right triangles.
Does it work for any triangle?: No, only for right-angled triangles (one angle of 90°).