Lean Body Weight Calculator
Estimate your lean body weight (LBM) using the Boer formula. LBM is the weight of everything in your body except fat.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Lean Body Weight Calculator
- Select your gender – Choose Male or Female from the dropdown.
- Enter your weight – Input your weight in kilograms (e.g., 70). Only metric units are accepted.
- Enter your height – Input your height in centimeters (e.g., 175). Only metric units are accepted.
- Click Calculate – The calculator will display your lean body weight (LBM) in kilograms, rounded to one decimal place.
- Review the formula – Below the result, you’ll see the Boer formula used, with your numbers plugged in for verification.
Note: All inputs must be positive numbers. If you see an error, check that your weight and height are greater than zero.
Previous Results
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Frequently Asked Questions
Lean body weight (LBM) is the weight of everything in your body except fat, including muscles, bones, organs, and water.
The Boer formula is a validated method for estimating LBM in adults, but individual variations exist. It's best used as an estimate.
LBM helps determine metabolic rate, medication dosages, and nutritional needs. It's also a key metric in fitness and health assessments.
