CaloriLean Body Mass Calculator
Calculate your lean body mass (fat-free mass) and get personalised protein recommendations.
Lean Body Mass Guide
What is Lean Body Mass?
Lean Body Mass (LBM) is everything in your body except fat: muscles, bones, organs, water, and other tissues. It's calculated as: Total Weight - Fat Mass.
Why LBM Matters
- Protein needs: Calculate protein based on LBM for better accuracy
- Metabolism: LBM is the main driver of your metabolic rate
- Fitness goals: Track muscle gain vs fat loss
- Health indicator: Higher LBM generally means better health
Protein Based on LBM
- Sedentary: 1.2-1.4g per kg of LBM
- Active: 1.6-1.8g per kg of LBM
- Athletes: 2.0-2.4g per kg of LBM
Note
You need your body fat percentage to calculate LBM. Use our body fat calculator if you don't know yours.