Lean body mass calculator

Answers the question: What is my fat-free body mass?

This calculator estimates your lean body mass in kilograms. The calculator uses the Boer formula as this is the most accurate.


Result if gender is male: 67.35 kilograms
Result if gender is female: 63.75 kilograms

Lean body mass is better for many uses as body fat is less relevant for metabolism. Anesthesiologists use lean body mass to manage certain medications. Lean body mass plus body fat equals body weight.

Our calculations

At Calculatorian, we are keen to share our knowledge, be transparent and open to feedback. Here are the calculations used to create this calculator. If you find an error or deficiency, contact us and we'll fix it in an instant!

Result if gender is male was calculated like this:

Result if gender is female was calculated like this:

Variables used in this formula

w = Weigth in kilograms
h = Height in centimeter