Body Mass Index Calculator

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.

This tool has been reviewed by doctors and is for general educational  purposes only. It is not a substitute for medical advice. The information in  this tool 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: Clinical Guidelines on the Identification, Evaluation, and Treatment of Overweight and Obesity in Adults. Published by the National Heart, Lung, and Blood Institute in cooperation with the National Diabetes and Digestive and Kidney Disorders; 1998.