Lean Body Mass Calculator
Calculate your estimated lean body mass (LBM) using the Boer formula - your weight minus body fat.
About Lean Body Mass
Lean body mass includes everything in your body except fat: muscles, bones, organs, water, and connective tissues. Knowing your LBM helps with nutrition planning, medication dosing, and fitness goals.
Did you know?
- The Boer formula was developed in 1984 and is considered one of the most accurate LBM methods
- Muscle tissue burns more calories than fat, even at rest
- LBM typically decreases with age if not maintained through exercise