Waist Hip Ratio Calculator — evidence-based tool to check your waist hip ratio. Includes formula, tips, and interpretation guide.
US Navy method (men): BF% = 86.010 × log₁₀(waist − neck) − 70.041 × log₁₀(height) + 36.76
US Navy method (women): BF% = 163.205 × log₁₀(waist + hip − neck) − 97.684 × log₁₀(height) − 78.387
where all measurements are in cm or all in inches.
BMI-based estimation (Deurenberg, 1991): BF% = (1.20 × BMI) + (0.23 × age) − (10.8 × sex) − 5.4 (sex: 1 for male, 0 for female)
Worked example (US Navy, male): height 178 cm, waist 85 cm, neck 38 cm. BF% = 86.010 × log₁₀(47) − 70.041 × log₁₀(178) + 36.76 ≈ 17.0%.