fitness_center Body Fat Calculator
Estimate body fat percentage using the accurate US Navy method or the quick BMI method.
This calculator estimates your body fat percentage using the U.S. Navy method, which uses body circumference measurements (neck, waist, and for women, hips) along with height - a widely-used estimation approach that doesn't require special equipment like calipers or scans.
Frequently asked questions
It's a reasonably reliable estimation method for general tracking purposes, though it's less precise than clinical methods like DEXA scans or hydrostatic weighing - it's best used for tracking trends over time rather than as an exact clinical measurement.
Typically neck and waist circumference for men, with hip circumference added for women, plus height - measured with a flexible tape measure.
Body fat distribution patterns differ by sex, so the Navy method uses slightly different circumference measurements and formulas to account for that.