Body fat calculator
Estimate your body fat percentage with a tape measure, using the US Navy method.
How to use the body fat calculator
- Enter your height and weight.
- Measure your neck and waist (and hips for women) with a soft tape.
- Read your estimated body fat and the ranges.
Frequently asked questions
How accurate is the Navy method?
It is usually within a few percent of lab methods, as long as you measure carefully.
Where should I measure?
Neck just below the Adam’s apple, waist at the navel for men or the narrowest point for women, hips at the widest point.
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