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Body Fat Calculator
Estimate your body fat percentage from simple tape measurements (neck, waist and — for women — hips) using the U.S. Navy method, and see which fitness category you fall into.
Estimated body fat
16.9%
Fitness
⚕️ The U.S. Navy method is an estimate; results vary from clinical measurement.
🔒 This tool runs entirely in your browser. Your data is never uploaded.
Frequently asked questions
Which method does it use?＋
The U.S. Navy circumference method, which estimates body fat from tape measurements rather than a scale.
How accurate is it?＋
It's a reasonable estimate but less precise than methods like DEXA. Measure carefully and consistently for the best results.
Is this medical advice?＋
No — use it as a general guide, not a diagnosis.