Lean Body Mass Calculator – Hosanna Store

Lean Body Mass Calculator


Lean Body Mass Calculator

There are a few reasons why you might want to use a lean body mass calculator. Have you ever wondered why slim but muscular people may weigh more than plump ones? We've all heard people say "muscle weighs more than fat", but is that really true? What does the muscle weight depend on? If you want an answer to these questions, you should know how to calculate lean body mass (LBM).

You'll find out:

  • What lean body mass is
  • How to calculate lean body mass
  • How to use the LBM Calculator

What is lean body mass?

Lean body mass is what your body would weight if you didn't have any body fat; that means it counts all the organs, bones, muscles, blood and skin, and everything else which is not fat but has mass.

It is particularly important to know your lean body mass if you are trying to lose weight. By watching your LBM you can monitor how much muscle you are losing. If you are only losing the muscle, the effect of your diet may be very disappointing, as losing muscle very often results in unpleasant appearance. Knowing how to calculate your lean body mass also helps you decide how much fat you should lose and what your body fat percentage will be after that. It is much more accurate to consider your LBM than your body weight.

How to calculate lean body mass

There are multiple lean body mass equations (and they vary between sexes as well). We're using the Boer formula, which is said to be the most accurate.

LBM (men) = 0.407 * weight + 0.267 * height * 100 - 19.2

LBM (women) = 0.252 * weight + 0.473 * height * 100 - 48.3

However, if you know your fat concentration, you can determine your exact LBM, according to this simple formula:

Lean Body Mass = Body Weight - (Body Weight * Body Fat %)

You will need to:

  1. Measure your body weight
  2. Multiply your body weight by the fat percentage
  3. Subtract the result from your body weight

How to use LBM calculator

Lean body calculator is a useful tool which enables you to find your lean body mass. You simply need to type in your weight and height. Then, the calculator will estimate two versions of LBM - the first one for men and the second one for women.

Let's take an example: Weight: 50 Height: 165

The calculator shows about 45 kg of NBM if you are a man and about 42 kg if you are a woman. The difference between genders is down to genetics. The male body generally contains more muscle while the female body naturally has more body fat.


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