Lean Body Mass Calculator

Free Online Lean Body Mass Calculator

Calculate your lean body mass using multiple formulas with this Lean Body Mass Calculator. Ideal for fitness enthusiasts and medical professionals.

What is Lean Body Mass?

Lean body mass (LBM) is the total body weight minus body fat, including muscles, bones, organs, and more.

• Ranges from 60-90% of total body weight.
• Men typically have higher LBM than women.
• Used in medical dosing and fitness assessments.

Why Calculate Lean Body Mass?

LBM is important for various applications in fitness and medicine.

• Guides dosages for water-soluble drugs.
• Helps assess body composition for fitness goals.
• Useful in medical exams and research.

How to Use This Calculator?

Enter your details to estimate your lean body mass.

1. Select gender and whether age is 14 or younger.
2. Choose US (feet/inches, pounds) or Metric (cm, kg) units.
3. Enter height and weight, then click Calculate.

Lean Body Mass Formulas

The calculator uses the following formulas:

• Boer: For adults, based on weight and height.
• James: For adults, uses weight-to-height ratio.
• Hume: For adults, another weight-height formula.
• Peters: For children ≤14, based on extracellular volume.

Lean Body Mass vs. Fat Free Mass

Lean body mass includes essential fat (organs), while fat free mass excludes all fat. The difference is ~2-3% in men and 5-12% in women.

Frequently Asked Questions (FAQs)

Conclusion

Our Free Online Lean Body Mass Calculator provides accurate LBM estimates using multiple formulas. Try it now!
💪 Optimize your fitness journey.