Your total body weight is made up of two things: fat, and everything else. Lean Body Mass (LBM) is the 'everything else'—the combined weight of your muscles, bones, water, and organs. For athletes, bodybuilders, and fitness enthusiasts, tracking your LBM is vastly more important than tracking your overall weight, as it reveals true muscle growth.
🔒 All calculations are performed locally on your device. No data is sent to any server.
