Body Metrics
Lean Body
Mass Calculator
Calculate your Lean Body Mass (LBM) — the weight of everything in your body except fat. Essential for precise nutrition and training plans.
Lean Body Mass
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Lean Mass (kg)
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Body Fat (kg)
What Is Lean Body Mass?
Lean Body Mass (LBM) is the amount of weight you carry on your body that isn’t fat. This includes your muscles, bones, organs, skin, and water. Understanding your LBM is often more useful than tracking total weight, as it helps you ensure that you are losing fat while preserving muscle.
How to Use Your LBM
Once you know your lean mass, you can more accurately calculate your protein requirements. Athletes typically aim for 1.6g to 2.2g of protein per kilogram of lean body mass to optimize recovery and growth.