What formula does this use?

This uses the Boer formula: Male LBM = 0.407W + 0.267H − 19.2; Female LBM = 0.252W + 0.473H − 48.3, where W is weight in kg and H is height in cm.

How is LBM different from muscle mass?

LBM includes all non-fat tissue — muscles, bones, organs, blood, and water. Muscle mass is just the muscle component and is typically smaller than LBM.

LBM is used to set protein targets, adjust drug doses, track the effectiveness of diet and exercise (did you lose fat or muscle?), and estimate kidney function.

Lean Body Mass Calculator

Lean Body Mass (LBM) is the total weight of your body minus body fat — it includes muscles, bones, organs, blood, and water. LBM is used in medicine to calculate drug doses, estimate kidney function, and set personalised nutrition targets. This calculator uses the Boer formula, one of the most accurate LBM equations available.

Body Weight(kg)

Height(cm)

Biological Sex

Frequently Asked Questions

Lean body mass (LBM) is your total body weight minus the weight of your body fat. It includes muscles, bones, organs, blood, water, and all non-fat tissues.

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