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Missing Side Of A Right Triangle Calculator

Result

Calculated result 4 Based on the values entered.
↗ Math

Missing Side Of A Right Triangle Calculator — free online calculator.

Formula

sqrt(hypotenuse^2-leg^2)
  • Missing Side Of A Right Triangle Calculator calculates its result from Hypotenuse, Known leg. It uses the formula sqrt(hypotenuse^2-leg^2). Change any input to recalculate the result instantly.
  • The main inputs are Hypotenuse, Known leg. Enter them in the units and format shown in the calculator.
  • Keep comparable quantities in compatible units whenever the formula combines or compares them.
  • Changing any input above recalculates the result with the same calculation engine used by this page.

Example: Missing Side Of A Right Triangle

Inputs
  • Hypotenuse: 5
  • Known leg: 3

Using Hypotenuse = 5, Known leg = 3, the calculated result is 4.

Sample result: Calculating…

Frequently asked questions

What does the Missing Side Of A Right Triangle calculate?

Missing Side Of A Right Triangle Calculator — free online calculator.

Which values should I enter?

Enter Hypotenuse, Known leg using the units and format shown beside each field.

What formula does this calculator use?

The calculator uses the following relationship: sqrt(hypotenuse^2-leg^2).

Why might my result differ from another source?

Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.

Does the result update automatically?

Yes. Changing an input updates the result using the same calculation engine shown on this page.

Page information

Updated: October 7, 2026