Estimate lean body mass using weight, height, and sex.
For informational purposes only. This tool does not constitute medical advice. Consult a healthcare professional before making health decisions.
Enter your measurements to calculate lean body mass.
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Learn how calories drive maintenance, loss, and gain.
Explore guide →Set protein, carb, and fat targets with confidence.
Explore guide →Understand BMI, body fat, and lean mass metrics.
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Explore guide →Lean body mass includes muscle, bone, organs, and water. Tracking lean mass helps you understand body composition changes beyond scale weight.
If you know your body fat percentage, the estimate becomes more precise. Otherwise, we use standard formulas based on height and weight.
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