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.

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

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Right Triangle Leg Calculator

Next: right triangle leg.

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Right Triangle Perimeter Calculator

Next: right triangle perimeter.

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Pythagorean Theorem Calculator

Find the missing side of a right triangle instantly.

Important Use Notice

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