Body Fat Calculator

Estimate your body fat percentage with the US Navy method from sex, height, neck and waist.

Estimate your body fat percentage with the US Navy circumference method — just your sex, height, neck and waist (plus hips for women). Add your weight for fat mass and lean mass.

Sex

Height (cm)

Neck circumference (cm)

Waist circumference (cm)

Weight (optional) (kg)

Measure with a tape against the skin while relaxed. Men: waist at navel level. Women: natural waist at the narrowest point and hips at the widest point. Measure the neck just below the larynx.

Estimated body fat

16.9%

Fitness — this estimate falls in the calculator’s fitness band.

Body fat percentage: 16.9 %
Category: Fitness — this estimate falls in the calculator’s fitness band.
Fat mass: 11.8 kg
Lean mass: 58.2 kg

Fat mass and lean mass are shown only when you enter your weight.

Estimate using the US Navy circumference formula; it may differ from measurements such as skinfold calipers or DEXA. The categories are reference bands, not a health assessment.

About This Content

Waglebagle's body fat calculator estimates your body fat percentage using the US Navy circumference method. Enter your sex, height, neck and waist (plus hips for women) and get your body fat percentage and category in seconds — add your weight and it also splits out your fat mass and lean mass. It's the fastest way to track leanness between DEXA or caliper checks. Results are an estimate and not medical advice.