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Interactive Lean Body Mass
HealthDetermine your lean body mass accurately with the Boer formula.
ttb run lean-body-mass
lbs
The Boer formula is used here. Lean Body Mass (LBM) includes your bones, organs, muscle, and water weight—essentially everything that isn't fat. Note: Algorithmic formulas provide estimations.
Estimated Lean Body Mass
133.6 lbs
LBM is 76.3% of your total weight
Fat Mass41.4 lbs
Body Fat % (Est)23.7%
Lean Body Mass133.6 lbs
LeanFat
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How to Use Lean Body Mass
Enter your gender, height, and weight. The calculator estimates your lean body mass (total weight minus fat) using the Boer formula. This tells you how much of your weight is muscle, bone, water, and organs — essential for setting protein targets and training goals.
1
Enter your parameters
Configure the inputs for the Lean Body Mass according to your specific needs.
2
View real-time results
The utility instantly processes your request and displays the calculated outputs directly in your browser.
3
Copy or Download
Click the copy icon next to the final output to instantly grab the result, or export it if applicable.
Frequently Asked Questions
Why does lean body mass matter?+
Lean body mass determines your baseline metabolic rate more accurately than total weight. It's also the foundation for calculating optimal protein intake (typically 0.7-1g per pound of lean mass).
Can I increase my lean body mass?+
Yes, through resistance training and adequate protein intake. Progressive overload in strength training, combined with a slight caloric surplus or maintenance intake, is the most effective approach.