Calculate your body fat percentage using the U.S. Navy method — the most accurate formula available without lab testing. Enter your measurements to get your body fat %, fat mass, lean mass, and fitness category.
Measure below the larynx
Measure at navel level
Body Fat % Categories
| Category | Men | Women |
|---|---|---|
| Essential Fat | 2-5% | 10-13% |
| Athletic | 6-13% | 14-20% |
| Fitness | 14-17% | 21-24% |
| Average | 18-24% | 25-31% |
| Obese | 25%+ | 32%+ |
Frequently Asked Questions
What is the U.S. Navy body fat method?
The U.S. Navy method estimates body fat using circumference measurements. It was developed as a practical alternative to underwater weighing and is accurate to within 2-4% for most people.
What is a healthy body fat percentage?
For men, 14-17% is considered fitness level. For women, 21-24% is fitness level. Athletes often have 6-13% (men) or 14-20% (women).
How do I measure correctly?
Use a flexible tape measure pulled snug but not tight. Measure the neck just below the larynx, the waist at the narrowest point, and for women, the hips at the widest point.
How is body fat different from BMI?
BMI uses only height and weight, so it cannot distinguish between muscle and fat. Body fat percentage directly measures fat, making it a more accurate indicator of body composition.
Related calculators: BMI Calculator | Calorie Calculator | Macro Calculator