Body Fat Calculator

Estimate body fat percentage using the U.S. Navy tape method. Supports metric and US units.

Measure just below Adam’s apple.
Measure at navel (men) / narrowest (women).

ACE Body Fat Categories

CategoryWomenMen
Essential fat10%–13%2%–5%
Athletes14%–20%6%–13%
Fitness21%–24%14%–17%
Average25%–31%18%–24%
Obese32%+25%+

Tape measurements should be snug (not compressing). Measure at least twice and average.