Body Fat Calculator

Just below the Adam's apple.
At the navel, relaxed, after a normal breath out.
Widest point of the hips. Only used by the female formula.
Worked example result
Body fat16.1%
Fat mass12.9 kg
Lean mass67.1 kg

A man of 80 kg and 180 cm with a 38 cm neck and 85 cm waist measures about 16.1% body fat — 12.9 kg of fat mass and 67.1 kg of lean mass.

US Navy — Men: BF% = 495 / (1.0324 − 0.19077·log₁₀(waist − neck) + 0.15456·log₁₀(height)) − 450 · Women: BF% = 495 / (1.29579 − 0.35004·log₁₀(waist + hip − neck) + 0.221·log₁₀(height)) − 450 (all measurements in cm) · Powered by CalcHub — Body Fat Calculator