Adult BMI Calculator

BMI Calculator - Measuring Body Fat

More than 123 million Americans are overweight, putting them at greater risk for heart attack, stroke, cancer and diabetes.

Body mass index (BMI)

BMI is a measure of body fat based on height and weight. The higher the BMI, the greater the risk of some diseases, including high blood pressure, coronary artery disease, stroke, osteoarthritis, some cancers, and type 2 diabetes.

BMI Numbers - what do they mean?

For adults older than 20 years:

• A BMI below 18.5 is considered underweight.
• A BMI between 18.5 and 25 is considered a healthy weight.
• A BMI between 25 and 30 is considered overweight.
• A BMI above 30 is considered obese.