Understanding Your Weight and Health

Classifications of Obesity

Stages of obesity

Stages of weight are medically defined by body mass index (BMI).

  • Individuals with a BMI of 25 to 29.9 are clinically classified as “overweight.”
  • Individuals with a BMI of 30 to 39.9 are classified as being affected by obesity.
  • Individuals with a BMI of 40 or higher are classified as being affected by severe obesity.

To calculate your BMI, please click here.

BMI is not used to determine a person’s actual percentage of body fat, but it is a good indicator to categorize weight in terms of what is healthy and unhealthy.

BMI is calculated by dividing a person’s weight in kilograms by his or her height in meters squared.

Once you find your measurement, you will want to find your weight classification that is accompanied on the BMI chart or calculator. Knowing your BMI is a good starting point in addressing your weight. If you find you are in an unhealthy range, you will want to talk with your doctor to address this issue.

There is not a separate BMI chart used for men and women. Both sexes use the same chart to measure obesity. In addition, the same classifications of obesity apply to both men and women.