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Body fat calculator
Body fat percentage with the US Navy tape method.
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- Works on any device
About Body fat calculator
Estimate body fat percentage with the US Navy tape method, which uses height plus neck and waist measurements, and hip for women. It needs only a tape measure. Accuracy is roughly within a few percentage points, and DEXA scans or skinfold tests are more reliable for precise tracking.
How to use Body fat calculator
- Enter your numbers above.
- The result updates instantly as you type.
- Change any value to compare different cases.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Available in 10 languages.
Also known as
Frequently asked questions
Where do I measure my waist for the Navy method?
Men measure at the navel. Women measure at the narrowest point of the waist. Keep the tape level and relaxed, without pulling in your stomach.
Is Body fat calculator free?
Yes. Body fat calculator on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.