Body mass index (BMI) is a number based on both your height and weight. It can help determine the degree to which a person is overweight and assesses their total body fat. The normal BMI is 20 to 25. Use the chart below to find your BMI.

Reviewed by health care specialists at UCSF Medical Center.
Last updated April 30, 2012

This information is for educational purposes only and is not intended to replace the advice of your doctor or health care provider. We encourage you to discuss with your doctor any questions or concerns you may have.