Body Fat Calculator
Estimate body fat percentage
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Quick guide
What can Body Fat Calculator help you do?
Free body fat calculator using the US Navy tape method. Estimate body fat percentage from height, neck, waist, and hip measurements.
Best for
Useful for quick file work, text cleanup, calculations, content creation, and website or AI checks.
How to use it
Open the tool, enter or upload what it asks for, then copy or download the result directly.
Privacy and limits
Most tools run in your browser with no sign-in. Very large files or older devices may hit browser memory limits.
Frequently Asked Questions
Which method is used?
This tool uses the US Navy circumference method.
Is it as accurate as a scan?
No. It is a convenient estimate and can differ from DEXA or clinical testing.