Health · Free tool
Body Fat % (US Navy)
The Navy circumference method: surprisingly accurate (±3% vs DEXA scan) and only needs a measuring tape — no skinfold callipers required.
170 cm
38 cm
Below the larynx, perpendicular to neck axis.
85 cm
Men: at navel. Women: at narrowest point.
Body fat %
24.4%
average range
- Essential: 2-5% (men), 10-13% (women)
- Athletic: 6-13% / 14-20%
- Fitness: 14-17% / 21-24%
- Average: 18-24% / 25-31%
- Obese: 25%+ / 32%+
FAQ
How accurate is the Navy method?
Within ±3% of DEXA scan for most people. Less accurate for very lean or obese (extreme tails). Hydrostatic weighing and DEXA are gold-standard but require lab visits.
Where exactly do I measure?
Neck: just below larynx. Waist (men): at navel. Waist (women): narrowest point. Hip (women): widest point of buttocks. Stand relaxed, exhale normally.
Why no skinfold method?
Skinfolds need callipers and a trained measurer. Navy method only needs a tape. For at-home self-measurement, Navy is the most reliable.