Body Fat Calculator
Estimate your body fat percentage with a tape measure, using the US Navy method.
kg
cm
cm
Just below the larynx (Adam's apple).cm
At the narrowest point.cm
At the widest point.Body fat29.6%Average
Fat mass20.7 kg
Lean mass49.3 kg
How This Is Calculated
The US Navy formula (Hodgdon and Beckett, 1984) estimates body fat from your height and circumference measurements. It is usually within 3–4 percentage points of lab methods such as DEXA. Measure on bare skin, keep the tape snug but not tight, and take each measurement twice.
| Category | Women | Men |
|---|---|---|
| Essential fat | 10–13% | 2–5% |
| Athletes | 14–20% | 6–13% |
| Fitness | 21–24% | 14–17% |
| Average | 25–31% | 18–24% |
| Obese | 32%+ | 25%+ |
Categories from the American Council on Exercise.