Calculating Your BMIObesity is the most common chronic health problem in the United States. The most recent figures show that 66.3% of all Americans are overweight or obese, 32.2%, are obese, and 4.8% are morbidly obese. For women in the 20 to 59 year age group, 8.0% are morbidly obese.
There are a variety of ways to define different levels of overweight and obesity. The most common and useful method is to use body mass index (BMI), which is simply a number calculated from your weight and height. BMI combines weight and height according to the following formula in the metric system:

Using pounds and inches, the calculation is modified slightly:
What is your BMI?Your BMI is more easily calculated with a BMI calculator, such as this one
http://www.nhlbisupport.com/bmi/.