What is Lean Body Mass (LBM)?

Lean Body Mass (LBM) is the total weight of your body minus fat. It includes muscles, bones, organs, and water, helping assess body composition.

How do I calculate my Lean Body Mass?

Our Lean Body Mass Calculator estimates your LBM using your height, weight, age, gender, and waist size, applying scientifically backed formulas.

Why is knowing Lean Body Mass important?

Understanding your Lean Body Mass helps with tracking muscle growth, setting fitness goals, and determining an ideal weight for optimal health.

What’s the difference between LBM and BMI?

BMI only measures weight relative to height, while Lean Body Mass focuses on muscle and fat distribution, giving a more detailed look at body composition.

Free Lean Body Mass Calculator

Understanding Your Lean Mass:
Key to Body Composition

Lean Body Mass (LBM) is the weight of your body excluding fat, including muscle, bones, and organs. It’s a more precise indicator of your body composition than weight alone, helping you understand your muscle mass and fat percentage. Use our LBM Calculator to find out yours!

Test Lean Body Mass Now

Metric & Imperial Units

Height & Weight

Gender

Hume formula

Health Resources and Tools

Kickstart your wellness journey by exploring what Lean Body Mass (LBM) means for your health and performance. Our LBM Calculator gives you a clear breakdown of your muscle-to-fat ratio—crucial data for building strength, improving body composition, and staying on track.

Once you’ve got your results, head to our blog below. You’ll find expert tips, workout strategies, and nutrition guidance tailored to your LBM profile. Whether your goal is muscle gain, fat loss, or overall wellness, these insights help you train smarter and make informed choices every step of the way.

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Understanding Lean Body Mass

Lean Body Mass (LBM) indicates the weight of your body excluding fat—essentially your muscles, bones, ligaments, tendons, and internal organs. Discover why knowing your lean body mass is crucial for setting accurate fitness goals and learn practical tips to effectively increase your muscle mass.

Lean Body Mass and Nutrition

Proper nutrition is essential for increasing and maintaining lean body mass. Our detailed guide covers nutritional strategies, ideal protein intake, and the best dietary practices to optimize your lean muscle development, supporting your fitness journey.