Body mass index (BMI) is a measure that helps determine a person’s weight status. It is calculated by dividing a person’s weight in kilograms by the square of their height in meters. For example, a person who weighs 70 kilograms and is 1.75 meters tall would have a BMI of 22.9.
BMI is a useful tool for screening for weight-related health problems. It can be used to identify people who are at risk for obesity, heart disease, stroke, and other chronic diseases.