What is "BMI"?

Body Mass Index, or BMI, is a simple measure of body fatness that is based on your height and weight. This calculator is designed for men and women ages 20 years and older.

What do the results mean?

For most adults, BMI results can be interpreted according to standard categories. Because BMI does not distinguish between weight from fat and weight from muscle, it may not be a good measure for some highly trained athletes.