Lean Body Mass: Adult educational estimate, not a diagnosis or individualized treatment.
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Lean Body Mass Calculator for United States
US · 12,345.67US customary measurementsRoad distance: miles
United States display preferences. Review the stated population, method and limitations; these are estimates, not a medical diagnosis.
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Your details
Enter height (in). The calculation converts these units internally.
Enter weight (lb). The calculation converts these units internally.
Estimated lean body mass (lb)
123.492
United States · calculated from your inputs
Estimated fat mass (lb)30.832
Implied body fat19.98%
Your calculation, beautifully packaged.Download a report with this result, your inputs, the formula, and assumptions.
How this result was calculated
Use the selected anthropometric prediction, or lean mass=weight×(1−measured body-fat fraction).
Country setup: United States. Displayed measurements are converted to the formula's base units internally.
Assumption: Adult educational estimate, not a diagnosis or individualized treatment. Not intended for children or pregnancy. Boer, James and Hume are population estimates; extreme body proportions can give implausible predictions. Measured-fat mode uses your own assessment. United States display preferences. Review the stated population, method and limitations; these are estimates, not a medical diagnosis.
Calculation version 1.0.0 · Support state: generic
Formula and method
Use the selected anthropometric prediction, or lean mass=weight×(1−measured body-fat fraction).
This calculation uses the values you enter. It runs in your browser and does not request a location or account.
Worked example
Measured body fat 20% at 70 kg gives 56 kg lean mass.
Questions people ask
Which method does this tool use?
Use the selected anthropometric prediction, or lean mass=weight×(1−measured body-fat fraction).
What should I check before using the result?
Adult educational estimate, not a diagnosis or individualized treatment. Not intended for children or pregnancy. Boer, James and Hume are population estimates; extreme body proportions can give implausible predictions. Measured-fat mode uses your own assessment.