geometry calculator

Right Triangle Hypotenuse Calculator

Right Triangle Hypotenuse Calculator for measurement cleanup, plan review, and shape estimation when you want a fixed formula answer without improvising the math by hand.

Important Use Notice

Informational calculator only. Verify important outputs independently before legal, tax, medical, engineering, safety-critical, contractual, employment, or compliance use.

Estimate

Enter job values, review the estimate, then use the decision hints before ordering or quoting.

Estimate Results

Enter values to see the result.

Formula

hypotenuse = sqrt(leg A^2 + leg B^2)

Use the Pythagorean theorem to solve the longest side.

This applies only to right triangles.

Example

5 units, 12 units gives Hypotenuse 13.

Check

Mixing units, scales, or coordinate conventions across leg a, leg b before calculating hypotenuse.
Rounding too early when the result still feeds another geometry or algebra step.

Next Step