Body Fat Percentage Calculator — US Navy Method
Estimate your body fat percentage using the US Navy method with waist, neck, and hip measurements.
Body Fat % Calculator
Uses the US Navy circumference method.
Frequently Asked Questions
What is a healthy body fat percentage?
For men: essential fat 2–5%, athletes 6–13%, fitness 14–17%, average 18–24%, obese 25%+. For women: essential fat 10–13%, athletes 14–20%, fitness 21–24%, average 25–31%, obese 32%+.
How accurate is the US Navy body fat method?
The US Navy method has an accuracy of ±3–4% compared to DEXA scans. It is not as accurate as hydrostatic weighing or DEXA, but is a reliable, free estimate that requires only a tape measure.
How do I measure waist circumference correctly?
Measure your waist at the level of your navel (belly button), not at the narrowest point. Stand relaxed, breathe normally, and measure after a normal exhale.
What is the difference between BMI and body fat percentage?
BMI is calculated from height and weight and does not distinguish between fat and muscle. Body fat percentage directly estimates the proportion of fat in your body. A muscular person may have a high BMI but low body fat.