Lean Body Mass Calculator
Calculate your lean body mass (the weight of everything except fat) and your Fat-Free Mass Index (FFMI) to benchmark your muscularity.
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Calculate Lean Body Mass & FFMI
Enter your body fat % for accuracy, or leave it blank for an estimate.
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Try it nowAbout this tool
Calculate your lean body mass (the weight of everything except fat) and your Fat-Free Mass Index (FFMI) to benchmark your muscularity.
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