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💪 Lean Body Mass Calculator
Calculate your lean body mass from your total weight and body fat percentage.
What Is Lean Body Mass?
Lean body mass (LBM) is your total body weight minus fat mass. It includes muscle, bone, organs, and water. LBM is calculated as: Weight x (1 - Body Fat %). Tracking LBM helps ensure weight loss comes from fat rather than muscle.
Why Track Lean Body Mass?
LBM is a better indicator of fitness progress than total weight alone. During a recomposition phase, you may gain muscle while losing fat, keeping weight stable but improving body composition. LBM also helps calculate more accurate calorie needs.
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