Body Fat Calculator
Calculate your body fat percentage using the U.S. Navy method
Disclaimer: This calculator uses the U.S. Navy circumference method, which provides an estimate based on body measurements. It does not account for individual variations in body composition, hydration level, or muscle distribution and may be less accurate for certain body types. This tool is for informational and educational purposes only and does not constitute medical advice. Consult a healthcare provider for a personalized body composition assessment.
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Frequently Asked Questions
How accurate is the U.S. Navy body fat method?
The U.S. Navy method is accurate within 1-3% of hydrostatic weighing for most people. It uses circumference measurements of the neck, waist, and hips (for women) along with height. While not as precise as DEXA scans, it is a reliable and accessible estimation method.
What is a healthy body fat percentage?
Healthy body fat ranges vary by gender and age. For men: 10-20% is generally considered healthy, with athletes at 6-13%. For women: 18-28% is generally healthy, with athletes at 14-20%. Essential fat (minimum for survival) is about 3-5% for men and 10-13% for women.
How do I measure my waist and neck for this calculator?
Measure your waist at the narrowest point (usually at the navel). Measure your neck just below the larynx (Adam's apple), sloping slightly downward at the front. For women, measure hips at the widest point. Use a flexible tape measure and keep it snug but not compressing the skin.
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