Lean Body Mass Calculator
The muscle-and-organ part of your weight.
Private by design — everything is calculated on your device, nothing is storedTry: Weight=75, Body fat=18 → 75 kg, 18 %, 61.5 kg
How to use
Lean body mass is everything that is not fat: muscle, bone, water, organs. It drives much of your metabolic rate.
Formula
LBM = weight × (1 − body fat/100)
FAQ
Why track LBM?
It is the part that burns calories and responds to training.
Bone and water included?
Yes — "lean" means non-fat, not just muscle.
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