The Body Mass Index is more commonly referred to as BMI and is used as a popular way to determine if you are underweight, normal weight, overweight or obese. Even though it may be popular and you have probably seen it or heard it mentioned in various places, that does not mean it is the best tool for the job. In fact I would suggest you don’t use the calculation at all. There are other ways, better ways. Should I not use it, I hear you ask? Well first we shall have a look at what it is used for and how it is calculated. What Does BMI Tell You The BMI is used to assess weight relative to height, the calculation used for this is to divide your body weight in kg by your height in meters squared. That’s it, it only uses 2 figures. For those who like to see the formula, here it is: Weight (in kilograms) ÷ [height (in meters) x height (in meters)] = BMI. If you use lbs and inches the 2 calculations below will allow you to convert your numbers. Convert weight from lbs to kgs: ...