Health
Body Fat Calculator
Estimate your body fat percentage using the U.S. Navy tape-measure method.
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Body Fat Calculator
Required for females
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Body Fat %
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—Fat Mass (kg)
—Lean Mass (kg)
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What Is Body Fat Percentage?
Body fat percentage (BFP) is the ratio of fat mass to total body mass. Unlike BMI, it directly measures body composition and is a more accurate indicator of health risks.
Healthy Body Fat Ranges
- Essential fat: Men 2–5%, Women 10–13%
- Athletes: Men 6–13%, Women 14–20%
- Fitness: Men 14–17%, Women 21–24%
- Acceptable: Men 18–24%, Women 25–31%
- Obese: Men 25%+, Women 32%+
The U.S. Navy Method
Men: BFP = 86.010 × log10(waist − neck) − 70.041 × log10(height) + 36.76
Women: BFP = 163.205 × log10(waist + hip − neck) − 97.684 × log10(height) − 78.387