Body Mass Index (BMI) is a person’s weight in kilograms divided by the square of height in meters. A high BMI can be an indicator of high body fatness. BMI can be used to screen for weight categories that may lead to health problems but it is not diagnostic of the body fatness or health of an individual.
Why Is BMI Important? Before calculating BMI, you need to know your weight and height. The body mass index, or BMI, is a calculation used to determine your level of body fat. It can help a doctor determine your overall fitness and your risk of developing chronic diseases.
- 18.5 or less is underweight.
- 25 to 29.9 is overweight
- 30 to 39.9 is obese.
- 40 or more is very obese.