๐ Health & Fitness
Lean Body Mass Calculator
Lean body mass is everything that is not fat: muscle, bone, organs and water. Tracking it matters more than tracking weight, because losing weight while preserving lean mass is what actually improves body composition.
How it works
Sex
Body weight
Height
Lean body mass
Fat mass
Body fat
Frequently asked questions
How do I use the Lean Body Mass Calculator?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.