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How This Body Fat Calculator Works
Uses the U.S. Navy circumference method — a widely used tape-measure formula for body fat percentage.
How to Measure
- Neck: Just below the larynx
- Waist: At the navel, relaxed
- Hip (women): Widest point
Categories
- Essential: 2-5% (men), 10-13% (women)
- Athletes: 6-13% (men), 14-20% (women)
- Average: 18-24% (men), 25-31% (women)
Frequently Asked Questions
How accurate is the Navy method?
Generally accurate within a few percentage points, making it a convenient at-home estimate.
Why does hip matter only for women?
The formula uses different variables based on typical fat distribution by sex.
What's a healthy body fat percentage?
Roughly 14-24% for men, 21-31% for women, for general fitness.