Body Fat Calculator
Estimate your body fat percentage with the US Navy tape method and the BMI method — no signup, instant results.
US Navy Method
BMI Method Estimate
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Less precise, for comparison
Categories — Men: Essential 2–5%, Athletes 6–13%, Fitness 14–17%, Average 18–24%, Obese 25%+. Women: Essential 10–13%, Athletes 14–20%, Fitness 21–24%, Average 25–31%, Obese 32%+. This is an estimate for information only — not medical advice.
How to use
- Measure neck just below the voice box, waist at the navel, and hip (women) at the widest point — all in cm.
- Enter your details; results update instantly.
- Compare the Navy result with the BMI estimate and check your category.