Lean Body Mass Calculator
Male LBM = 0.407W + 0.267H − 19.2; Female LBM = 0.252W + 0.473H − 48.30.407×70+0.267×170−19.2=28.5+45.4−19.2=54.7 kg
Free online tool
Lean Body Mass Calculator
Enter your weight, height and gender to calculate lean body mass.
Instant calculation
Lean Body Mass Calculator
Enter your weight, height and gender to calculate lean body mass.
Your result
Calculation
Your numbers stay in this browser. Nothing is uploaded or saved.
Three clear steps
How to use this calculator
- 01
Enter weight
Type your weight in kilograms.
- 02
Enter height
Type your height in centimeters.
- 03
Select gender
Choose male (0) or female (1).
The formula
How this calculation works
Uses the Boer formula. LBM represents the weight of everything except fat (muscle, bone, organs, water).
Check the method
Worked examples
Each example follows the same formula used by the calculator.
Male, 170 cm, 70 kg — lean body mass?
0.407×70+0.267×170−19.2=28.5+45.4−19.2=54.7 kg≈ 54.7 kg lean massCommon questions
Questions about this calculation
What is the Lean Body Mass Calculator?
The Lean Body Mass Calculator helps you estimate your lean body mass — total body weight minus fat mass. Enter your values and select Calculate to get an instant result.
How is the result calculated?
Uses the Boer formula. LBM represents the weight of everything except fat (muscle, bone, organs, water).
Can you show an example?
Example: Male, 170 cm, 70 kg — lean body mass? — ≈ 54.7 kg lean mass.
Is my data saved when I use the Lean Body Mass Calculator?
No. All calculations run locally in your browser. Your inputs and results are never uploaded, stored or shared with anyone.
Is the Lean Body Mass Calculator free to use?
Yes. The Lean Body Mass Calculator is completely free. No account, sign-up or payment is required. It works on mobile, tablet and desktop.
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