Lean Body Mass Calculator
Calculate your Lean Body Mass (LBM)—your total weight minus fat. Understand your muscle mass and body composition.
Lean Body Mass Importance
Lean Body Mass (LBM) is your total body weight minus body fat. It includes muscle, bone, organs, and water. LBM is crucial for metabolism—muscle tissue burns more calories at rest than fat tissue. The Boer formula provides accurate LBM estimation from weight and height. Increasing LBM through strength training boosts your metabolic rate and daily calorie burn. For athletes and fitness enthusiasts, tracking LBM is more meaningful than weight alone. LBM also helps calculate protein requirements—aim for 1.6-2.2g of protein per kg of LBM for muscle building. Indian fitness standards recommend focusing on LBM percentage for sustainable health rather than just BMI. LBM naturally decreases with age by about 3-5% per decade after age 30, so consistent strength training becomes increasingly important.