What is the Lean Body Mass Calculator?
The lean body mass calculator is a free online tool that helps you work out lean body mass quickly and accurately. It uses the standard formula Boer formula for lean body mass and shows the result instantly as you type, along with a full breakdown so you can see exactly how the answer was reached.
How to use this calculator
- Choose gender.
- Enter weight and height.
- See lean and fat mass.
Formula used
Boer formula for lean body massExplanation of each input
- Gender โ the gender used in the calculation.
- Weight (kg) โ the weight used in the calculation.
- Height (cm) โ the height used in the calculation.
Understanding your result
- Lean body mass โ the calculated lean body mass in kg.
- Fat mass โ the calculated fat mass in kg.
Step-by-step calculation
For the example values Male, 70kg, 170cm:
- Apply the formula:
Boer formula for lean body mass - Substitute the values: Boer formula
- Result: LBM about 55 kg
Worked example
| Inputs | Male, 70kg, 170cm |
|---|---|
| Working | Boer formula |
| Result | LBM about 55 kg |
Benefits and practical uses
This calculator saves you time and reduces errors when you need lean body mass. It is useful for students, professionals and anyone who wants a fast, reliable answer without manual calculation. Results update instantly, work in your browser and can be copied or shared in one click.
Assumptions and limitations
- Boer (1984) formula.
Frequently asked questions
What is lean body mass?
Everything in your body except fat - muscle, bone, organs and water.
Disclaimer: This calculator provides general estimates for educational purposes only and is not medical advice. Consult a qualified healthcare professional for personal guidance.