Estimate body fat percentage with the U.S. Navy method.
Estimates only - not medical advice.
The U.S. Navy formula estimates body fat from circumference measurements: neck and waist for men, neck, waist and hip for women, all relative to height. It is not as precise as a DEXA scan (nothing a tape measure can do is), but it is a reasonable field estimate with a typical accuracy of plus or minus 3 to 4 percentage points. Enter your weight and the calculator also shows estimated fat mass and lean mass in pounds.
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It’s a good estimate (±3-4%) for most people, though DEXA scans are more precise.
For men: neck below the larynx and waist at the navel. For women: neck below the larynx, waist at the narrowest point, and hips at the widest point. Use the same spots every time.
General ranges (these are guidelines, not thresholds): roughly 10 to 20 percent for men and 18 to 28 percent for women, with some variation by age. Athletes often sit at the lower end; older adults tend toward the higher end. A doctor or registered dietitian can put any number in context for your specific situation.
Body fat relates measurements to your frame, so height improves the estimate.
No - it’s an estimate. Consult a professional for body-composition assessment.