Lean Body Mass Calculator
Lean body mass from weight and body fat.
Result
Lean body mass
144lb
Common questions
What is lean body mass?
Lean body mass (LBM) is your total weight minus body fat. It includes muscle, bones, organs, and water. LBM is useful for calculating protein needs and setting fitness goals.
How do I calculate lean body mass?
LBM = Weight × (1 − Body Fat Percentage/100). If you weigh 180 lbs at 20% body fat, your LBM is 180 × 0.80 = 144 lbs. You can estimate body fat using the Navy method or calipers.