Body Fat Calculator
Estimate your body fat percentage based on measurements (US Navy method) for better tracking.
For the US Navy method, measure at the navel for waist and below the larynx for the neck.
Understanding Body Fat Percentage
Body fat percentage is the proportion of fat relative to total body weight. Using a Body Fat Calculator based on the US Navy Method provides a highly accurate estimation without the need for expensive equipment. It relies on circumference measurements of the neck, waist, and hips.
The US Navy Body Fat Formula
This method compares your waist measurement against your neck and height (and hips for women) to determine density. It is widely used by the military because it is easy to administer and highly correlated with hydrostatic weighing.
Body Fat Categories
Use the table below to understand where your result falls in terms of fitness classification. Ideal ranges differ significantly between men and women due to biological differences in essential fat.
| 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%+ |
Note: Essential fat is the minimum amount necessary for physiological health.