Lean Body Mass Calculator

Calculate your body weight excluding fat, essential for protein planning and muscle tracking.

Your Composition

Enter weight and body fat percentage.

Weight *

Body Fat %*

Enter your weight and body fat % to see your Lean Body Mass.

What your result means

Lean body mass is everything except fat (muscle, bone, organs and water), useful for tracking muscle and planning protein.

Good to know

It is derived from body-fat estimates, so it inherits the same margin of error.

A number is a starting point, not a plan. Discuss your result with a doctor

Calculate your total body weight excluding body fat. Useful for muscle tracking, protein planning, and fitness analysis.

How this is calculated

Formula: LBM = Weight × (1 − Body Fat % / 100)

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Disclaimer

These calculators provide general health and fitness estimates based on the information entered and standard scientific formulas. They are intended for educational and informational purposes only and should not be considered a substitute for professional medical advice, diagnosis, or treatment. Results may vary based on individual health conditions, body composition, lifestyle, medications, and clinical factors. Always consult a qualified healthcare professional or doctor before making significant changes to your diet, exercise routine, medication, or health management plan.