Lean Body Mass Calculator

Calculate your Lean Body Mass (LBM) – everything except fat – using three evidence-based formulas. Useful for tracking muscle mass, setting protein intake, and fitness goals.

How to use

  1. Select your gender.
  2. Select weight and height units independently, then enter your values.
  3. Click Calculate to see LBM from three formulas.
  4. The average of the three formulas is a good estimate.