The body mass index is a system that calculates a person’s normal body weight based on height and weight. However, because it does not account for people with high muscle mass percentages, (Muscle weighs more than fat.) it should not be used as a diagnostic for people who have these body types.

The calculation for Body Mass Index is actually quite simple: it equals a person’s weight in kilograms, divided by their height in meters squared.

BMI= m/h^2

For example, if a person weighs 80 kg, and is 2 meters tall, their BMI is 20. The values of the BMI are arranged as such:

  • 0-18.4 = Underweight
  • 18.5-24.9 = Normal Weight
  • 25-30 = Overweight
  • 30+ = Obese

For more information check out the governments page on assessingweight: http://www.cdc.gov/healthyweight/assessing/index.html

Check out our onsite calculator to figure out where you stand.

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Remember that the BMI is only a reference, it can not describe healthy weights for certain people, especially those with athletic builds.

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