Body mass index (BMI) is one of many factors that you and your health care provider can use to assess your health. It is a quick screening tool for assessing health risk based on your height and weight.
Calculate your BMI
Limitations of the BMI
BMI is a handy tool, but it is not right for everyone. It may not accurately assess health risks in certain adults, including:
people under age 18 who have not reached full growth
pregnant or lactating women
adults over 65 years of age.
Talk with your health care provider or registered dietitian if you have concerns about your Body Mass Index.
BMI for Children and Teens
BMI can also be used to assess health risk for children over 2 years of age. However, the standards used to define overweight and obesity are different for young people than for adults. Talk to your family doctor about assessing your child's or teenager's BMI.
Calculate your child's and teenager's BMI