Lean Body Mass Calculator

Estimate how much of your body weight is lean mass rather than fat mass.

What is lean body mass?

Lean body mass is the portion of your body weight that is not fat. It includes muscle, organs, bone, water, and other lean tissues.

Knowing your lean body mass can help you better interpret your scale weight, estimate protein needs, and understand body composition changes over time.

Lean body mass calculators are estimates, but they can still be useful when paired with body fat tracking and real-world progress data.

Frequently Asked Questions