Lean Body Mass Calculator

Calculate your lean body mass (muscle, bones, organs) from your total weight and body fat percentage.

Measurement System:
lbs
%

Don't know your body fat? Calculate it here

Your Body Composition

Lean Body Mass
- lbs
Fat Mass
- lbs
Lean Mass Percentage
- %

Body Composition Breakdown

Lean
Fat
Lean Mass: 144 lbs (80%)
Fat Mass: 36 lbs (20%)

What This Means

Your lean body mass results will be explained here.

References: ACSM Guidelines for Exercise Testing and Prescription, National Strength and Conditioning Association.