The Body Mass Index (BMI) is the measure of your weight compared to your height. The calculation is to help determine your classification of your body weight with regards to your height. The categories for BMI are: underweight, normal weight, overweight, and obese. Underweight can used interchangeably with anorexia.

Obviously, the ideal category to be in is "Normal Weight." However, this method of measurement is not typically the most accurate for those who are athletic. This is because many athletes have a higher percentage of muscle compared to fat, and with muscle having a higher density than fat, the calculations may not always prove to be completely accurate.

On the other hand, this is the ideal method for everyone else to figure out if they are overweight, obese, normal, or even underweight. Also, by measuring your BMI you may also find some motivation to exercise so that you become fit or even stay fit.

How to calculate:
Your BMI is measured by taking your weight in kilograms and dividing it by your height in meters squared (kg/m²). For conversion, 1 inch is equal to 0.0254 meters and 2.2 pounds is equal to 1 kilogram.