Body fat percentage tells you how much of your body weight is fat versus lean mass, and is generally a better indicator of fitness than weight alone.
This calculator uses the US Navy circumference method, which estimates body fat from your neck, waist, and (for women) hip measurements along with your height.
Example: A man, 180 cm tall, neck 38 cm, waist 85 cm:
BF% = 495 / (1.0324 - 0.19077×log10(85-38) + 0.15456×log10(180)) - 450 ≈ 15.6%
| 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%+ |
It is a reasonably accurate estimate for most people, typically within a few percentage points of more precise methods like DEXA scans.
Measure at the narrowest point of your torso, usually just above the belly button, without pulling the tape too tight.
For men, 10-20% is generally considered healthy, while for women it is typically 18-28%, though this varies with age and fitness goals.