Body Fat Calculator
Calculator ToolsBody fat % using the US Navy method
Embed this tool on your websiteFree
- Choose how tall the frame should be.
- Press Copy code.
- Paste it into your page, blog, WordPress or Notion HTML block.
The tool runs inside your visitor's browser, nothing is uploaded, and a small "Powered by ToolCloak" line stays under it. The second line (script) is optional: it makes the frame fit the tool's height.
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History
All history →Body Fat Calculator — at a glance
Estimate your body fat percentage at home with just a tape measure.
How to use it — step by step
Sex, weight, height and neck, waist (and hip for women) measurements in cm.
Enter your values
Fill in the boxes. Sensible example values are already filled in for you.
Calculate Body Fat
Press the button. The answer is worked out instantly on your device.
Read or copy the result
See the big answer and the extra details, then press Copy to keep them.
Pro tips
Small things that make the result better.
Quick facts
Frequently Asked Questions
How accurate is it?+
It is a reasonable estimate, but DEXA scans or skinfold tests by a professional are more accurate.
Do women need the hip value?+
Yes. The female formula uses waist, hip and neck. Men can leave the hip box as it is.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.