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Lean Body Mass Calculator
Estimate fat-free mass using Boer and James formulas
kg
Average Lean Body Mass
56.3 kg
Average of Boer and James formulas
LBM (Boer)
56.0 kg
LBM (James)
56.5 kg
Body Fat %
19.6%
Fat Mass
13.7 kg
Formula Reference
Boer Formula
LBM = 0.407 × weight(kg) + 0.267 × height(cm) − 19.2
James Formula
LBM = 1.1 × weight(kg) − 128 × (weight/height(cm))²