Lean Body Mass Calculator
Use our free Lean Body Mass Calculator to accurately calculate your body composition metrics. Professional formulas, instant results, and 100% privacy.
Lean Body Mass (LBM) Analyzer
Evaluate your non-fat body composition using Boer and James clinical equations for athletic and metabolic assessment.
kg
cm
Quick Benchmarks:
Your Lean Mass
62.5
KG
Boer Equation
Body Logic Breakdown
16.7% Est. Fat
James Formula
0.0 kg
Hume Formula
0.0 kg
Fat Mass
12.5 kg
Composition Insight
Lean body mass includes muscles, bones, organs, and water. Essential for calculating BMR and protein needs.
How to Use Lean Body Mass Calculator in 3 Easy Steps
1
Step 1
Enter your age, gender, and physical measurements into the fields.
2
Step 2
If applicable, enter laboratory values precisely from your medical reports.
3
Step 3
View the interpreted result and health category in the output panel.
Frequently Asked Questions
Our engine uses industry-standard formulas (e.g., Du Bois for BSA, CKD-EPI for GFR). However, results are for informational purposes only.
No. All calculations are processed locally in your browser. We never see or store your medical or fitness data.
Yes, all health and medical utilities on ToolsHub are completely free with no registration required.