Lean Body Mass Calculator

Enter your details to estimate your Lean Body Mass.

Lean Body Mass (LBM) is the total weight of your body minus all the weight due to your fat mass. LBM includes the weight of your organs, skin, bones, body water, and muscles. It's a key indicator of your metabolic rate.

Different formulas were developed based on studies of different population groups. This calculator uses three popular formulas:

  • Boer Formula: A widely used and generally accurate formula.
  • James Formula: Developed in 1976, it's another well-regarded method.
  • Hume Formula: Developed in 1966, this is one of the older but still relevant formulas.

The variation in results highlights that these are estimations. The average of these formulas can provide a balanced view.

This calculator provides estimations and is for informational purposes only. For a precise measurement and health assessment, consult a qualified healthcare provider.