Navy Body Fat Calculator

Formulas Used (Original Metric):

Males:
Body Fat % = 495 / (1.0324 - 0.19077 × log₁₀(waist_cm - neck_cm) + 0.15456 × log₁₀(height_cm)) - 450

Females:
Body Fat % = 495 / (1.29579 - 0.35004 × log₁₀(waist_cm + hip_cm - neck_cm) + 0.22100 × log₁₀(height_cm)) - 450

Sources:
• Hodgdon, J.A. and Beckett, M.B. (1984). "Prediction of percent body fat for U.S. Navy men from body circumferences and height." Naval Health Research Center, San Diego, CA.
• Hodgdon, J.A. and Beckett, M.B. (1984). "Prediction of percent body fat for U.S. Navy women from body circumferences and height." Naval Health Research Center, San Diego, CA.

Note: This calculator uses only circumference measurements and height as per the official Navy method. Imperial measurements are automatically converted to metric (centimeters) for calculation. For comparison, see the Army Body Fat Calculator which uses a simpler single-site abdominal measurement method.