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# Body fat percentage calculator

Estimate body fat percentage from height, neck, waist, and hip measurements with the U.S. Navy circumference method.

Enter height and tape measurements to estimate body fat.

This is the U.S. Navy circumference method, a logarithmic regression against body density measured in military studies. Run it honestly, it lands within a few percentage points of lab methods like DEXA, but it reads high on very muscular people and can read low on very lean ones, because it sees only the tape, not the tissue. Use the same tape, the same spots, and the same time of day to track the trend rather than the absolute number. Nothing here diagnoses anything or replaces a clinician.
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## More unit & math tools

- [Unit converter](/converters/units)
- [Average and median](/converters/statistics)
[All unit & math tools](/converters)

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