The body mass index (BMI) is an approximate measure of body fat. It is based on your height and weight. A BMI between 19 and 25 is considered a normal amount of body fat. If someone's BMI is 25 to 29.9, that person is said to be overweight. A person is said to be obese if his or her BMI is 30 or higher. The higher your BMI, the greater your risk for diseases such as diabetes, heart disease, arthritis, and certain cancers. If you are concerned about your BMI or just want more information, talk with your family doctor.
Enter your height (in feet and inches) and weight (in pounds). Then click the "Calculate BMI" button in one of the tools below. The first tool calculates adult BMI. The second tool can be used to calculate BMI for children and teens ages 2 through 19 years old.
The information in these tools should not be relied upon to make decisions about your health. Always consult your family doctor with questions about your individual condition(s) and/or circumstances.
Source: Centers for Disease Control and Prevention, Healthy Weight: Assessing Your Weight.