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FFMI Calculator
Calculate Fat-Free Mass Index (FFMI) and evaluate lean muscle mass
FFMI Guidelines: Fat-Free Mass Index (FFMI) measures lean muscle mass relative to height. Unlike BMI, FFMI accounts for body fat percentage. Enter your body measurements below.
Body Composition Parameters Input
Calculation Results
⚠️ Not medical advice. For fitness, bodybuilding, and body composition reference only. Body fat percentages measured via skinfold or bioimpedance are estimates.