Lean Body Mass Calculator
Lean body mass calculator: fat-free mass from weight, height and sex (Boer formula), with fat mass and estimated body fat percentage.
LBM = 0.407 W + 0.267 H − 19.2 (men)
How to use this calculator
- Type your input in the box.
- The result updates as you type.
- Use “Copy result” or “Copy link” to share it.
Lean body mass is everything except fat: muscle, bone, organs and water. Formulas estimate it; scans measure it.
For general information only; it does not replace advice from a doctor or other health professional.
Frequently asked questions
Man, 80 kg, 178 cm?
Lean mass ≈ 60.9 kg, about 24 % body fat.
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