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Open toolPythagorean Theorem Calculator
Find a right triangle hypotenuse from its two perpendicular legs. Use one consistent length unit for every dimension.
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Enter the inputs, then select Calculate result.
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How Pythagorean Theorem Calculator works
Find a right triangle hypotenuse from its two perpendicular legs.
Use one consistent length unit for every dimension. Results are in the corresponding squared or cubed unit. Dimensions must be positive. Finite real numbers only. Display uses up to 12 significant digits; binary floating-point arithmetic can introduce rounding. Both supplied sides must be the legs of a right triangle; the result is a length.
How to use Pythagorean Theorem Calculator
Follow the labelled inputs.
Enter first perpendicular leg
Replace the example with first perpendicular leg. The field labels specify the expected format and units.
Input and settings
Check the remaining inputs
Set second perpendicular leg. Use one consistent length unit for every dimension.
Tool result
Run, review and save
Select Calculate result. Review the calculated result, then copy it or download the result text.
Review the details
Examples and uses for Pythagorean Theorem Calculator
Check the supplied example
The starting example produces 5. Find a right triangle hypotenuse from its two perpendicular legs.
Use your own inputs
Read the labels for first perpendicular leg and second perpendicular leg. Use one consistent length unit for every dimension.
Record a reviewed result
Copy the calculated result into your notes. Keep the formula and assumptions with it if someone else needs to reproduce the calculation.
How to read the result
Read the units and assumptions with the output.
Find a right triangle hypotenuse from its two perpendicular legs.
Use one consistent length unit for every dimension. Results are in the corresponding squared or cubed unit. Dimensions must be positive. Finite real numbers only. Display uses up to 12 significant digits; binary floating-point arithmetic can introduce rounding. Both supplied sides must be the legs of a right triangle; the result is a length.
Supported input and limits
Check the stated scope before you run it.
Use one consistent length unit for every dimension. Results are in the corresponding squared or cubed unit. Dimensions must be positive. Finite real numbers only. Display uses up to 12 significant digits; binary floating-point arithmetic can introduce rounding. Both supplied sides must be the legs of a right triangle; the result is a length.
The input stays in this browser. Copy result and Download save the same displayed text.
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Pythagorean Theorem Calculator: common questions
Answers about using Pythagorean Theorem Calculator and understanding its results.
Which inputs does this tool accept?
Use one consistent length unit for every dimension. Results are in the corresponding squared or cubed unit. Dimensions must be positive. Finite real numbers only. Display uses up to 12 significant digits; binary floating-point arithmetic can introduce rounding. Both supplied sides must be the legs of a right triangle; the result is a length.
Can I copy or download the result?
Yes. Copy result copies the displayed text, and Download saves the same result as a text file. Calculations run in your browser without an account.
Calculate result with your input
Check the calculated result, then copy or download it.