Health
Body Fat Percentage Calculator
BMI ignores body composition. Body fat % gives a much better picture. This tool uses the well-known US Navy method based on neck, waist (and hip for women) measurements — accurate within a few % for most people.
Body fat
16.9%
Fitness
Fat mass
12.7 kg
Lean mass
62.3 kg
Uses the US Navy circumference method — convenient and reasonably accurate, but not a substitute for DEXA or BIA for clinical decisions.
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Frequently asked
- How accurate is the US Navy method?
- Within ±3% of DEXA for most people. Good for tracking trends; not a substitute for clinical-grade measurement.
- What's a healthy body fat % range?
- Roughly 14–24% for men and 21–32% for women, with athletic ranges starting lower. Context matters more than a single number.
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