Body Fat Calculator

Estimate body fat using body measurements.

How it’s calculated

This uses the Deurenberg equation, which estimates body fat from BMI, age, and sex — no calipers needed.

Body fat % = 1.20 × BMI + 0.23 × age − 10.8 × sex − 5.4 (men sex = 1, women sex = 0).

Source: Deurenberg P, et al., British Journal of Nutrition, 1991.

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