🔺 Body Fat % Estimator
US Navy method — uses neck, waist, and hip measurements to estimate body fat percentage.
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About the US Navy Body Fat Method
The US Navy formula uses circumference measurements to estimate body fat percentage without expensive equipment. It is validated against hydrostatic weighing and has a margin of error of roughly ±3–4%.
Male formula: 86.010 × log₁₀(waist − neck) − 70.041 × log₁₀(height) + 36.76
Female formula: 163.205 × log₁₀(waist + hip − neck) − 97.684 × log₁₀(height) − 78.387
Note: This is an estimate. DEXA scans, hydrostatic weighing, and BodPod provide more accurate measurements.