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Lean Body Mass Calculator - LBM Estimation
Free lean body mass calculator. Estimate your fat-free mass using the Boer formula. Calculate muscle, bone, and organ weight.
Lean Body Mass Calculator
Calculate your fat-free mass
Body Composition
Enter your values to see results
and click the "Calculate" button
Lean Body Mass Calculator
Estimate your lean body mass - the weight of everything except fat (muscles, bones, organs, water). Useful for nutrition and fitness planning.
Boer Formula
Men: (0.407 × W) + (0.267 × H) - 19.2 | Women: (0.252 × W) + (0.473 × H) - 48.3
The Boer formula estimates LBM from weight and height. More accurate than weight alone for setting protein and calorie targets.
Frequently Asked Questions
Why is lean body mass important?
LBM determines your base calorie needs and protein requirements. Muscle burns more calories than fat.
How can I increase lean body mass?
Resistance training + adequate protein (1.6-2.2g per kg LBM) + slight calorie surplus for muscle building.
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