Body Fat Calculator
Estimate body fat percentage from tape measurements (US Navy method). For guidance only.
How the US Navy method works
It estimates body fat from body circumferences using log-based formulas. For men it uses neck and waist; for women it adds hip measurement. All measurements are in centimetres.
Typical categories (men / women)
| Category | Men | Women |
|---|---|---|
| Athletic | 6–13% | 14–20% |
| Fitness | 14–17% | 21–24% |
| Average | 18–24% | 25–31% |
| High | 25%+ | 32%+ |
FAQ
How accurate is it?
The circumference method is a convenient estimate (±3–4%). For precise figures use DEXA or hydrostatic weighing.