Mondo Knows Tools
Body Fat Calculator
Body fat percentage from simple tape measurements. Use the free body fat calculator below to get an instant answer, with the formula shown so you can check the maths and trust the result. Free, private, and no sign-up.
Inches, or centimetres.
Inches, or centimetres.
Inches, or centimetres.
Mondo says
Estimated body fat
17.5%
CategoryFitness
MethodUS Navy circumference
Tape estimates run a few points either way. Track the trend, not a single reading.
How it works
Uses the US Navy circumference method, which estimates body fat from neck, waist (and hip) measurements against height.
Body Fat Calculator: common questions
- What does the Body Fat Calculator work out?
- Body fat percentage from simple tape measurements. It is one of the Health & Fitness tools on Mondo Knows.
- How is the Body Fat Calculator calculated?
- Uses the US Navy circumference method, which estimates body fat from neck, waist (and hip) measurements against height.
- Do I need to sign up, and is my data stored?
- No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.
Mondo also knows
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Facts that connect to the body fat calculator
Short, sourced facts that point back to this tool.
Estimates for general guidance only. This is not financial, medical or legal advice. Everything runs in your browser and nothing you type is stored.