Body mass index overview
Body mass index (BMI) can help you see if your weight is raising your risk for health problems. It uses a formula to compare how much you weigh with how tall you are.
- A BMI lower than 18.5 is considered underweight.
- A BMI between 18.5 and 24.9 is considered healthy.
- A BMI between 25 and 29.9 is considered overweight.
- A BMI of 30 or higher is considered obese.
If your BMI is in the normal range, it means that you have a lower risk for weight-related health problems. If your BMI is in the overweight or obese range, you may be at increased risk for weight-related health problems, such as high blood pressure, heart disease, stroke, arthritis or joint pain, and diabetes.
Calculate your BMI below.