The body mass index (BMI) is the easiest way to determine if you're carrying around too much fat. It's based on your height and weight—and estimates whether your weight is healthy or if you are overweight or obese.
To get your BMI, enter your information below and then click calculate.
A healthy BMI for adults is between 19 and 26. A BMI of 27 to 30 is considered overweight. Obesity is classified as a BMI of 30 or above.
If your BMI is below 19, you may be at risk for problems such as osteoporosis. A low BMI may also be a sign that you are ill. If your BMI is in the overweight or obese range, you are at greater than average risk for conditions such as coronary heart disease, type 2 diabetes, and high blood pressure.
BMI values don’t consider individual factors such as bone or muscle mass. BMI may:
- Underestimate body fat for older adults or other people with low muscle mass
- Overestimate body fat for people who are very muscular and physically fit
If you think your BMI results do not accurately reflect your body fat level, tell your doctor about your results and ask for a body fat test.
Not for use by pregnant or nursing women, or anyone under 18 years old.