Estimate lean body mass.
Lean body mass is your bodyweight after estimated fat mass is removed, which can help frame protein, performance, and size goals.
Nutrition & Weight Loss
Lean Body Mass Calculator
Use this lean body mass calculator to estimate how much of your bodyweight is lean tissue instead of body fat.
How it works
How to use the lean body mass calculator
Lean Body Mass Calculator is intended for users who track body composition and want a better way to think about protein, dieting, and muscle retention. Use it to see how much lean tissue you may be carrying instead of only focusing on total scale weight.
Enter current bodyweight and a realistic body fat percentage estimate. The calculator returns a lean body mass estimate.
Lean body mass is only as accurate as the body fat percentage you start with. Compare lean mass across checkpoints so you can see whether bodyweight changes are coming more from fat or from lean tissue.
FAQ
Common questions about this calculator.
Use these quick answers as a starting point, then compare the result to your real-world progress.
What does the lean body mass calculator tell me?
Enter current bodyweight and a realistic body fat percentage estimate. The result is a lean body mass estimate.
How accurate is the lean body mass calculator?
Lean body mass is only as accurate as the body fat percentage you start with.
What should I do after I get my result?
Compare lean mass across checkpoints so you can see whether bodyweight changes are coming more from fat or from lean tissue.
Who is this calculator best for?
This calculator is intended for users who track body composition and want a better way to think about protein, dieting, and muscle retention.
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