Body Fat Calculator
Estimate your body fat percentage using the US Navy method. Understand your body composition and fitness level. 100% Free - No registration required!
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Estimate your body fat percentage using the US Navy method. Understand your body composition and fitness level. 100% Free - No registration required!
Enter your details below to estimate your body fat percentage using the US Navy method.
| Category | Men (% body fat) | Women (% body fat) |
|---|---|---|
| Essential | 2-5% | 10-13% |
| Athletic | 6-13% | 14-20% |
| Fitness | 14-17% | 21-24% |
| Average | 18-24% | 25-31% |
| Obese | ≥ 25% | ≥ 32% |
Body fat percentage is the total mass of fat divided by total body mass. It's a better indicator of fitness than BMI as it distinguishes between fat and muscle mass.
The US Navy method uses circumference measurements (neck, waist, and hip for women) along with height to estimate body density and then body fat percentage. It's a reliable, non-invasive method.
Categories include: Essential (minimum fat needed), Athletic, Fitness, Average, and Obese. These ranges differ for men and women due to biological differences.
For men, 14-17% is considered fitness level; for women, 21-24% is fitness level. The average range for men is 18-24% and for women is 25-31%. These can vary based on age and fitness level.
The US Navy method is considered one of the most accurate circumference-based methods, with an error margin of about 3-4% compared to DEXA scans. It's widely used by fitness professionals and military organizations.
Women tend to store more fat in the hip and thigh area. Including hip circumference in the calculation provides a more accurate estimate for women using the US Navy method.