Using the calculator
Enter the values requested above. Estimate lean body mass, fat mass and lean mass percentage from body weight and body fat percentage.
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Lean Body Mass Calculator
Estimate lean body mass, fat mass and lean mass percentage from body weight and body fat percentage.
Enter your training and body measurements
Use the values from the workout, measurement, or training scenario you want to evaluate with the lean body mass tool. Change one variable at a time when comparing scenarios.
Important: Results are educational planning estimates and are not a diagnosis or medical recommendation.
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How to use this calculator
Reading the result
The result shows lean body mass, fat mass and lean mass percentage from body weight and body fat percentage.
How it is calculated
Estimated lean body mass is body weight multiplied by the portion of body weight that is not body fat. For example, 180 pounds at 20 percent body fat models about 144 pounds of lean mass.
Results are estimates based on the values entered. Review the Methodology and Calculator Disclaimer for important limitations.