Body Fat Calculator
Estimate your body fat percentage using the U.S. Navy method with just a tape measure.
Enter Your Measurements
Learn More About Body Metrics
- Why Body Fat Percentage is a Better Metric Than Weight
- Compare this to your BMI (Body Mass Index) for a complete picture.
Body Fat Percentage Categories
This table from the American Council on Exercise (ACE) shows general body fat percentage categories.
| Category | Women | Men |
|---|---|---|
| Essential Fat | 10-13% | 2-5% |
| Athletes | 14-20% | 6-13% |
| Fitness | 21-24% | 14-17% |
| Acceptable | 25-31% | 18-24% |
| Obesity | 32%+ | 25%+ |
Why Measure Body Fat?
Tracking your body fat percentage is often more useful than tracking your weight. It helps you understand your body composition—the ratio of fat mass to lean mass (muscle, bones, water, etc.). When you lose weight, you want to ensure you're losing fat, not valuable muscle. This calculator provides a convenient way to estimate and monitor changes in your body composition over time.