Body Composition Calculator
Body composition analysis provides a much more complete picture of your health than weight or BMI alone. Two people with the same weight and height can have vastly different body compositions - one might have high muscle mass and low body fat, while the other has low muscle and high body fat, with completely different health implications. This calculator estimates your body fat percentage, fat mass, and lean body mass using the U.S. Navy circumference method, which requires measurements of your waist, neck, and (for women) hips along with height. While not as accurate as DEXA scans or hydrostatic weighing, this method provides a reasonable estimate without expensive equipment. Understanding your body composition helps you set more meaningful fitness goals and track progress more effectively than scale weight alone.