Lean Body Mass Calculator

Calculate your lean body mass - muscle, bones, and organs without fat

Lean Body Mass Calculator

Calculate your lean body mass - muscle, bones, and organs without fat

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Enter your target to see how much fat you need to lose

What is Lean Body Mass?

Lean Body Mass (LBM) is your total body weight minus your fat mass. It includes your muscles, bones, organs, skin, and water. Tracking LBM helps you ensure you're losing fat, not muscle, during weight loss.

Why LBM Matters

  • Preserving LBM during weight loss maintains your metabolism
  • Higher LBM means more calories burned at rest
  • LBM tracking ensures you're losing fat, not muscle

LBM vs Total Weight

Scale weight doesn't tell the whole story. Two people at the same weight can look completely different based on their lean mass vs fat mass ratio. Focus on body composition, not just the number on the scale.

Lean Body Mass Calculator - Calculate Your LBM | Free Tool