What Is Body Fat Percentage?

Body fat percentage refers to how much of your body is composed of fat versus lean mass. Unlike BMI, which doesn’t differentiate between fat and muscle, body fat % gives a clearer picture of fitness and health.

How This Calculator Works

This tool uses the U.S. Navy Method, which is considered reliable and requires only a few measurements: height, neck, waist, and hip (if female). You can input weight in lb or kg and receive instant results with visual classification.

Body Fat Categories

• Essential Fat: 2–5% (men), 10–13% (women)
• Athletic: 6–13% (men), 14–20% (women)
• Fitness: 14–17% (men), 21–24% (women)
• Average: 18–24% (men), 25–31% (women)
• Obese: 25%+ (men), 32%+ (women)