Body Fat Calculator

Estimate body fat percentage using the US Navy method and circumference measurements.

Category: Health · v1.0.0

Gender

Weight (kg)

Height (cm)

Waist (cm)

Neck (cm)

Category	Women	Men
Essential Fat	10-13%	2-5%
Athletes	14-20%	6-13%
Fitness	21-24%	14-17%
Average	25-31%	18-24%
Obese	32%+	25%+

About This Tool

Estimate your body fat percentage using the U.S. Navy circumference method. Requires only a tape measure — no calipers needed. Also shows your fat mass, lean mass, and body fat category. Compare with BMI for a more complete picture of body composition.

How to Use

Select your gender and measurement units
Enter height, waist, neck, and hip (women) measurements
Click 'Calculate' to see your estimated body fat percentage
Review your category and lean mass breakdown