Body Fat Percentage Calculator (U.S. Navy Method)
Estimate your body fat percentage using the U.S. Navy circumference method. Only requires a tape measure — no calipers or special equipment needed. Includes body fat classification and health ranges.
Frequently Asked Questions
How do I measure body fat at home?
The U.S. Navy method uses a tape measure to estimate body fat from circumference measurements. For men, measure your waist at the navel and your neck below the larynx. For women, also measure your hips at the widest point. This calculator applies the Navy formula to produce an estimate within 3–4% of DEXA scan accuracy.
What is a healthy body fat percentage?
For men, 10–20% body fat is considered fit, and 18–25% is average. For women, 18–28% is fit, and 25–31% is average. Essential fat minimums are about 3% for men and 12% for women. Athletes typically carry less fat than the general population.
Is body fat percentage better than BMI?
Body fat percentage is a more accurate indicator of health than BMI because it directly measures fat vs. lean mass. BMI can classify muscular individuals as overweight even when their body fat is low. For the most complete picture, use both metrics together.
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