Body Mass Index (BMI) is a very common method of evaluating individual people to see if they are under or overweight. It involves comparing their weight to their height by dividing the weight measurement (expressed in kilograms) by the square of the height (expressed in meters).
A BMI of below 18.5 is underweight, between 18.5 and 25 is an indication of healthy weight, 25 to 30 is overweight, over 30 is referred to as obese, over 35 is known as severe obesity, and over 40 indicates morbid obesity. Because it considers both weight and height, it is usually the measure most often used in research for referring to relative sizes.
You can calculate your BMI using this equation:
BMI = (Weight in Pounds) Divided by (Height in inches) x (Height in inches) x 703
Or use Body Mass Index Calculator to find out your score or check the chart below.