Lean Body Mass Calculator

Calculate your Lean Body Mass (LBM) - the total weight of your body minus your fat mass. This calculator uses the Boer, James, and Hume formulas, which are scientifically validated methods to estimate your lean body mass based on gender, height, and weight.

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Use this converter to convert to the unit accepted by the calculator.

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Result
LBM: 62.6 kg
138.0 lbs
Body Composition
Lean Body Mass 62.6 kg / 138.0 lbs
Body Fat 19.0 kg / 41.9 lbs (23.2%)
LBM by Formula
Boer Formula 62.8 kg / 138.4 lbs
James Formula 62.1 kg / 136.9 lbs
Hume Formula 62.9 kg / 138.7 lbs
Lean Body Mass (LBM) is the total weight of your body minus all the weight due to your fat mass. It includes the weight of organs, skin, bones, water, and muscle.

Note: These formulas provide estimates and may vary from actual body composition measurements obtained through methods like DEXA scans.