Body Fat Percentage Calculator
Estimate your body fat percentage with the US Navy tape-measure method. Enter a few measurements and see your body fat percentage, fat mass, lean mass, and which category range you fall into.
Enter your measurements above and the result will appear here.
Body fat category table
Your range is highlighted after you calculate.
| Category | Men (%) | Women (%) |
|---|---|---|
| Essential fat | 2 – 5 | 10 – 13 |
| Athletes | 6 – 13 | 14 – 20 |
| Fitness | 14 – 17 | 21 – 24 |
| Average | 18 – 24 | 25 – 31 |
| Obese | 25+ | 32+ |
How to use
- Select your sex and your preferred unit (cm or inches).
- Measure with a soft tape: neck just below the throat, waist at the navel, hips at the widest point (women only).
- Enter the values and your result appears instantly, with the matching category row highlighted.
Note
Uses the US Navy formula: men = 495 / (1.0324 - 0.19077 x log10(waist - neck) + 0.15456 x log10(height)) - 450; women = 495 / (1.29579 - 0.35004 x log10(waist + hip - neck) + 0.22100 x log10(height)) - 450. Tape measurements are estimates only — not medical advice.