Free Lean Body Mass Calculator - Calculate LBM
Calculate your lean body mass (fat-free mass) using Boer, James, and Hume formulas. Understand your body composition better.
Quick Answer
Lean Body Mass = Total Weight - Fat Mass. LBM includes muscle, bone, organs, and water. Boer formula (men): 0.407×weight(kg) + 0.267×height(cm) - 19.2. Average LBM: 60-90% of body weight.
Key Facts about Lean Body Mass Calculator:
- LBM = everything except fat
- Includes muscle, bone, organs, water
- Multiple estimation formulas exist
- Higher LBM = higher metabolism
- Preserving LBM important during weight loss
- Athletes have higher LBM percentage
Why Use Our Lean Body Mass Calculator?
LBM calculation:
LBM Calculator
Estimate lean body mass.
Multiple Formulas
Boer, James, Hume.
Body Composition
Understand your makeup.
Track Progress
Monitor LBM changes.
Instant Results
Get calculations immediately.
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How to Lean Body Mass Calculator in 3 Easy Steps
Calculate LBM:
Enter Measurements
Height, weight, body fat (optional).
Select Formula
Choose calculation method.
View Results
See lean body mass estimate.
Why Use Our Calculator?
Multiple formulas
Body composition insight
Track muscle mass
Better than weight alone
Common Use Cases for Lean Body Mass Calculator
Perfect for:
Frequently Asked Questions
Everything you need to know about our lean body mass calculator
What is lean body mass?
Everything except fat - muscle, bone, organs, water. Higher = better metabolism.
Lean body mass is everything in your body except fat: muscle, bone, organs, water. Higher LBM means higher metabolism and typically better health.
How do I increase lean body mass?
Resistance training, adequate protein, progressive overload, good recovery.
Resistance training builds muscle. Adequate protein (0.7-1g per pound body weight). Progressive overload. Adequate recovery and sleep.
Still have questions? Try the tool yourself!
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