How can I tell if I'm at a healthy weight?
BMI is a number calculated from a person's weight and height. BMI provides a reliable indicator of body fatness for most people and is used to screen for weight categories that may lead to health problems. This calculator provides BMI and the corresponding BMI weight status category. Use this calculator for adults, 20 years old and older.

Adult Body Mass Index or BMI
One way to begin to determine whether your weight is a healthy one is to calculate your "body mass index" (BMI). For most people, BMI is a reliable indicator of body fatness. It is calculated based on your height and weight.

To calculate your BMI, see the BMI Calculator. Or determine your BMI by finding your height and weight in this BMI Index Chart.

• If your BMI is less than 18.5, it falls within the "underweight" range.
• If your BMI is 18.5 to 24.9, it falls within the "normal" or Healthy Weight range.
• If your BMI is 25.0 to 29.9, it falls within the "overweight" range.
• If your BMI is 30.0 or higher, it falls within the "obese" range.

"Underweight", "normal", "overweight", and "obese" are all labels for ranges of weight. Obese and overweight describe ranges of weight that are greater than what is considered healthy for a given height, while underweight describes a weight that is lower than what is considered healthy. If your BMI falls outside of the "normal" or Healthy Weight range, you may want to talk to your doctor or health care provider about how you might achieve a healthier body weight. Obesity and overweight have been shown to increase the likelihood of certain diseases and other health problems.