Body Fat Calculator
Calculate your body fat percentage using the U.S. Navy method. Get accurate body composition analysis with AI-powered fitness insights.
What is Body Fat Percentage?
Body fat percentage is the total mass of fat divided by total body mass, multiplied by 100. It's a more accurate measure of fitness than BMI alone, as it distinguishes between fat mass and lean mass (muscle, bones, organs). Our free body fat calculator uses the scientifically validated U.S. Navy method to estimate your body fat percentage.
Calculate Your Body Fat Percentage
Enter your measurements below. For best accuracy, measure in the morning before eating.
Frequently Asked Questions
How accurate is the body fat calculator?
The U.S. Navy method used in this calculator is accurate within 3-4% of more expensive methods like DEXA scans. For best results, take measurements in the morning and use consistent measuring points.
What is a healthy body fat percentage?
Healthy body fat ranges vary by gender. For men, 14-24% is considered acceptable, with athletes typically at 6-13%. For women, 21-31% is acceptable, with athletes at 14-20%.
How do I measure my waist and neck correctly?
Measure your waist at the navel level while standing relaxed. Measure your neck at the narrowest point, typically just below the larynx. For women, measure hips at the widest point.