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Body Fat Calculator

Estimate your body fat percentage using the U.S. Navy method and BMI method. Enter your measurements for an accurate result.

US Navy MethodBMI MethodBody CompositionFat vs Lean Mass
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Body Fat Calculator

Enter your measurements to estimate body fat percentage.

kg
cm
cm
cm

ACE Body Fat Category

DescriptionWomenMen
Essential Fat10–13%2–5%
Athletes14–20%6–13%
Fitness21–24%14–17%
Average25–31%18–24%
Obese32%+25%+
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About Navy Method

The U.S. Navy method uses circumference measurements to estimate body fat. It was developed by Hodgdon and Beckett at the Naval Health Research Center in 1984 and is widely used for its simplicity and accuracy.

Measurement Tips

  • → Measure waist at navel level (men) or narrowest point (women)
  • → Measure neck below the larynx, tape sloping downward
  • → Women: measure hips at the widest horizontal point
  • → Do not suck in stomach during measurement

Frequently Asked Questions

Frequently Asked Questions

Healthy ranges vary by sex and age. For men: essential fat 2–5%, athletes 6–13%, fitness 14–17%, acceptable 18–24%, obese 25%+. For women: essential fat 10–13%, athletes 14–20%, fitness 21–24%, acceptable 25–31%, obese 32%+.