Math Calculators

Pythagorean Theorem Calculator

Find a right triangle hypotenuse. The estimate updates in your browser as you type.

Hypotenuse 5

Local estimate.

What this tool is for

Pythagorean Theorem Calculator is built for math checking inside math calculators when you need to finds the hypotenuse of a right triangle. It focuses on pythagorean theorem instead of making you adapt a broad calculator to a narrow task.

When to use it

Use it when side a and side b are already known and you want a fast estimate before comparing options, checking a worksheet, or copying the result into another workflow.

Inputs

  • Side a is one of the direct inputs used to calculate pythagorean theorem.
  • Side b is one of the direct inputs used to calculate pythagorean theorem.

Formula

c = sqrt(a^2 + b^2)

Example

Sides 3 and 4 give hypotenuse 5.

What the result means

The result labeled "Pythagorean Theorem" is the direct output of c = sqrt(a^2 + b^2). In the worked example, sides 3 and 4 give hypotenuse 5.

Before you rely on the result

Check the inputs and formula before using the result in homework, engineering, finance, or scientific work.