What is body fat percentage?
Body fat percentage estimates how much of your body weight is fat mass rather than lean tissue, bone, organs, and water.
How the US Navy body fat formula works
The US Navy method uses body circumference measurements. Men use waist, neck, and height. Women use waist, hip, neck, and height. The formula is calculated in inches.
How to measure waist, neck, and hips
Measure with a flexible tape. Keep the tape level and snug but not tight. Measure waist at the narrowest point or around the navel, neck below the larynx, and hips around the widest point.
Limitations
This calculator is an estimate, not a medical measurement. Results can vary with measurement technique, body shape, hydration, and individual differences.