Body Mass Index and Calculator

What is body mass index?

Determining how much you should weigh is not a simple matter of looking at an insurance height-weight chart, but includes considering the amount of bone, muscle, and fat in your body's composition. The amount of fat is the critical measurement.

A good indicator of how much fat you carry is the body mass index (BMI). Although it is not a perfect measure, it gives a fairly accurate assessment of how much of your body is composed of fat.

To calculate BMI for an adult, use our online BMI calculator.