How to Calculate Lean Mass Index

Your lean body mass is the total weight of your body sans the fat. This includes your bones, organs, and muscles. Calculating your lean muscle mass is a great way to estimate how much muscle you are gaining. Muscle burns calories, and the more muscle you have, the more calories you are capable of burning.

Things You'll Need

• Scale
• Calculator

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Instructions

• 1

  Weigh yourself and make note of your body weight.

• 2

  Obtain your body fat percentage by using an online calculator such as BMI-Calculator.com. You will need your weight, your waist in inches, and women will need to add their wrist, hips and forearm measurements in inches.

• 3

  Multiply your body weight by your fat percentage (in decimal form) to get your body fat in pounds.

• 4

  Subtract your body fat in pounds from your total body weight. This is your lean body mass.