Lean Body Mass Calculator

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Calculate your lean body mass and fat mass from height, weight and sex using the Boer formula, or directly from a measured body-fat percentage.

kg
cm
ft
in
%
If known, this is used directly instead of the Boer estimate.
Lean body mass –
Fat mass –
Lean mass % –
Method used –
The Boer formula estimates lean mass from height, weight and sex. Entering a measured body-fat percentage gives a more accurate result.
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