Body Fat Calculator
Estimate body fat percentage from height, neck and waist (plus hip for women) measurements using the US Navy method. Runs in your browser.
Runs in your browser — your file never leaves your deviceFrequently asked questions
Is Body Fat Calculator free to use?
Yes — Body Fat Calculator is completely free with no limits, no watermarks and no sign-up. It runs in your browser, so there is nothing to pay for.
Are my files uploaded or stored anywhere?
No. This tool does all its work locally in your browser using your own device's power. Your files never leave your device and we never see them.
Do I need to install anything or create an account?
No installation and no account needed. Body Fat Calculator works on any modern browser — Windows, Mac, Linux, Android and iPhone.
How do I use Body Fat Calculator?
Open the tool, add your file (or paste your content), adjust any options, then press “Estimate body fat”. Your result is ready to download in seconds.
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