Body Fat Calculator

Estimate body fat percentage using the clinical U.S. Navy circumference method.

💡 Quick Answer & Definition(Verified Formula)

Estimate body fat percentage using the clinical U.S. Navy circumference method.

The U.S. Navy Circumference Method

Uses neck, waist, and hip circumferences combined with height to estimate body fat percentage and lean body mass.

Healthy Body Fat Ranges by Gender

Men: Essential fat (2|5%), Athletes (6|13%), Fitness (14|17%), Average (18|24%). Women: Essential fat (10|13%), Athletes (14|20%), Fitness (21|24%), Average (25|31%).

Tracking Fitness and Body Recomposition

Body fat percentage is a superior metric compared to scale weight alone for evaluating strength training and fat loss progress.

100% Free, Instant & Private. All computations run directly in your browser sandbox without sending personal data to any external server.