Body fat percentage is a more accurate health indicator than weight alone. The U.S. Navy method uses simple circumference measurements to estimate your body fat percentage and compare it to established categories.
Body Fat %:
Category:
How to Use This Tool
Select your gender.
Measure your waist at navel level.
Measure your neck just below the larynx.
Measure your height.
Women: measure hip at widest point.
Click Calculate.
The Formula
U.S. Navy formula uses log-based ratios of circumferences. Men: waist/neck/height. Women: waist+hip/neck/height.
Why It Matters
You are a 32-year-old male with a 36-inch waist, 15-inch neck, and 70-inch height. The U.S. Navy method estimates your body fat at 14.2% — in the fitness category. Athletes typically range 6-13%.