BF
Body Fat Calculator
Enter body measurements (neck, waist, height, hip) — instantly find your body fat % and category using the US Navy method.
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Measurements (cm me)
Result
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Method: US Navy Body Fat Formula
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How to use — Body Fat Calculator
- Choose gender — the measurements needed differ.
- Measure your height, neck, and waist (around the navel) in cm. Women also need hip measurement.
- The result instantly shows body fat % and category.
FAQ
What is the US Navy method?
This is the US Navy's official body-fat estimation formula, calculated from the circumference of the neck, waist (and hip for women) — using just a measuring tape, no machine or caliper needed.
How accurate is it?
It can be off by ~3-4% compared to lab methods like a DEXA scan, but it's considered the most reliable of the home-measurement methods.
What is a healthy body fat percentage?
Men: 10-20% is a healthy range. Women: 18-28% is a healthy range (women naturally have more essential fat). Athletes can be lower than this.
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