Body Fat Percentage Calculator
Estimate body fat % using the U.S. Navy circumference method (Hodgdon & Beckett, 1984) — accurate to roughly ±3-4% compared to underwater weighing.
Estimated body fat
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Measurement tips
Neck: just below the larynx (Adam's apple). Waist: at the navel for men, at the narrowest point for women. Hip (women only): at the widest point around the glutes. Keep the tape horizontal and don't suck in your stomach — measure naturally. This is an estimate, not a medical diagnosis; for precise body composition, methods like DEXA scans are more accurate.