Lean Body Mass Calculator

Q: What is lean body mass?

Lean body mass (LBM) is total body weight minus fat mass. It includes muscle, bone, organs and water. LBM = weight × (1 − body fat % / 100).

Work out lean body mass (LBM) from your weight and body fat percentage. UK metric.

Weight (kg)

Body fat (%)

What is lean body mass?

Lean body mass (LBM) is your weight minus fat mass: muscle, bone, organs and water. Formula: LBM = weight × (1 − body fat % ÷ 100). You need an estimate of body fat (e.g. from a body fat calculator or scale). This is for guidance only.

Related calculators

Body Fat Percentage Calculator →Ideal Body Weight Calculator →

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