Lean Body Mass
Estimate fat-free mass using Boer and James formulas.
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Formula
LBM (Boer, Men) = 0.407W + 0.267H - 19.2
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Lean Body Mass
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Lean %
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How This Lean Body Mass Works
This calculator uses established scientific formulas validated in peer-reviewed literature. All calculations run locally in your browser — no data is sent to any server.
Frequently Asked Questions
How accurate is this?
Uses well-established formulas accurate for most people. Individual variation is normal.
Is my data stored?
No. All calculations run in your browser. No data collected.
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