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Lean Body Mass Calculator

Use this lean body mass calculator to estimate lean mass and fat mass from weight and height with the sex-specific Boer formula.

kg

Use your current body weight in kilograms.

cm

Use your current height in centimeters.

This calculator uses the Boer formula, which estimates lean body mass from weight and height alone. It is a population-based estimate, not a body composition scan or a diagnosis.

This lean body mass calculator provides a general estimate only and is not medical advice. If you have concerns about body composition, unexplained weight change, an eating disorder, pregnancy, or growth in a child or teen, speak with a qualified healthcare professional before using the result to make health decisions.

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