Body Mass Index (BMI). Information about how BMI is a screening, individual health, and population health measure.For adults, body mass index categories are underweight, healthy weight, overweight, and obesity. Dec.
Back to Health assessment tools. Calculate your body mass index (BMI). Check an adult's or child's BMI to find out if they're a healthy weight. It's important to use the right calculator for adults (aged 18 and over) or children and teenagers (aged between 2 and 17).

BMI, or body mass index, is used to determine a healthy body weight in relation to a specific height. When it comes to cancer risk, its important to know your BMI, says Ann-Marie Hedberg, associate director of Clinical Nutrition at MD Anderson.

To use the table, find your height in the first column on the left, labeled Height. Move across the row to your weight. The number at the top of the column directly above your weight is your BMI. Healthy Weight. Overweight. Obese. Extreme Obesity.
