Free Hypotenuse Length Calculator
Find the hypotenuse of a right triangle.
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Result
Hypotenuse
5.0000
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Short answer
Find the hypotenuse of a right triangle.
What is the Hypotenuse Length Calculator?
Find the hypotenuse of a right triangle.
How does the Hypotenuse Length Calculator work?
Enter the inputs above and read the result.
Formula
Variables
a,bThe two legs
Explanation
The Pythagorean theorem relates a right triangle's legs to its hypotenuse.
Examples
Applications
Advantages
Limitations
Common mistakes
Tips
Related concepts
The Hypotenuse Length Calculator sits inside the Math Calculators hub, in the geometry & shapes cluster. Length, area, volume and angle in two and three dimensions. Understanding the terms below makes the output easier to interpret and easier to compare against neighbouring measures.
Practical use cases and industry applications
Understanding Hypotenuse Length
Find the hypotenuse of a right triangle. Within math calculators, hypotenuse length belongs to the geometry & shapes cluster, where it shares terminology and assumptions with closely related tools.
Learning how hypotenuse length is calculated
The Pythagorean theorem relates a right triangle's legs to its hypotenuse. Working through the variables one at a time — a,b — makes the result reproducible by hand and easier to sanity-check.
Using hypotenuse length to make a decision
Because outputs depend on the assumptions you enter, run more than one scenario before committing to a figure.
How hypotenuse length compares with related measures
area, perimeter, volume, surface area all describe adjacent aspects of geometry & shapes. Comparing this calculator's output against those measures — using the related tools listed on this page — prevents a single metric from being read in isolation.
Frequently asked questions
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