LBM

Lean Body Mass Calculator

Your weight without body fat, estimated from height and weight by the Boer formula.

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Result…

Units
Sex
kg
cm

 

…

How it's calculated

Boer (1984):
Men: LBM = 0.407 × kg + 0.267 × cm − 19.2
Women: LBM = 0.252 × kg + 0.473 × cm − 48.3
James (1976) and Hume (1966) shown for comparison

Lean body mass is everything that is not fat: muscle, bone, organs and water. These formulas predict it from height and weight alone, so they assume an average build; for a muscular or very lean person a tape or scan method is better. Lean mass is used in drug dosing and as the base for protein targets.

Your numbers, step by step

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