Body Fat Calculator
Estimate your body fat percentage using the U.S. Navy circumference method. Requires a tape measure and takes less than a minute.
Your Result
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| Result | What it means? |
|---|---|
| < 6% (men) | Essential fat The minimum level required to sustain vital organ function. Found in elite endurance athletes. |
| 6-13% (men) / 14-20% (women) | Athletes Typical body fat range for trained athletes. Lean and muscular. |
| 14-17% (men) / 21-24% (women) | Fitness Indicates a fit, lean physique with visible muscle definition. |
| 18-24% (men) / 25-31% (women) | Acceptable / Average A generally healthy range for most adults. |
| — | Average Within the population average range. |
| ≥ 25% (men) / ≥ 32% (women) | High body fat Above the recommended range. Consider lifestyle changes and consult a healthcare professional. |
Formula
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Body fat percentage is estimated from circumference measurements using a validated logarithmic equation.
- The U.S. Navy method was developed by Hodgdon & Beckett (1984) and uses neck, waist, and (for women) hip circumference.
- Classification thresholds follow the American Council on Exercise (ACE) guidelines.
This calculator provides an estimate and is not a substitute for clinical measurement. Methods such as DEXA, hydrostatic weighing, or BodPod are more accurate. Consult a healthcare professional for personalized advice.