📉Body Fat Calculator
Estimate body fat % (US Navy method).
Disclaimer: These tools are for general information and educational use only and are not medical advice, diagnosis or treatment. Individual health needs vary. Always consult a qualified doctor or healthcare professional before making health decisions.
About Body Fat Calculator
Estimate your body fat percentage using the U.S. Navy circumference method from your height, neck, waist (and hip). Free body fat calculator. Estimates only — not medical advice.
🔒 Private by design — this tool runs entirely in your browser. Nothing you enter is uploaded to a server.
Frequently asked questions
How is body fat estimated?＋
It uses the U.S. Navy circumference method based on your height, neck and waist (and hip for women). It's an estimate, not a clinical measurement.