Body Composition Tool
Lean Body Mass Calculator
Estimate your lean body mass, body fat percentage, and fat mass from your basic body measurements.
Calculate Lean Body Mass
Enter your gender, height, and weight to get an estimate.
Height
Weight
Your estimated lean body mass will appear here.
What Is Lean Body Mass?
Lean body mass is the total weight of your body minus fat mass. It includes muscles, bones, organs, water, and everything in your body except fat.
Why Lean Body Mass Matters
Lean body mass can help you better understand body composition, physical progress, and how much of your body weight comes from muscle and other non-fat tissues.
How This Calculator Works
This calculator estimates body fat percentage from height, weight, and gender, then uses that estimate to calculate lean body mass and fat mass.
FAQ
Is lean body mass the same as muscle mass?
No. Lean body mass includes muscle, but also water, bones, and organs.
Can lean body mass increase with training?
Yes. Strength training and good nutrition may help increase lean mass over time.
Is this result exact?
No. It is an estimate, but it can still be useful as a reference point.