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BMI Calculator

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We know you’re more than a number, but your BMI is an important one!

BMI, or body mass index, expresses the relationship between weight and height. For most people, it’s a fairly reliable indicator of how much body fat they have. The higher your number, the greater risk you have of developing certain health problems, like coronary artery disease or diabetes. (For more information about BMI, visit the Centers for Disease Control and Prevention’s pages for adults and children and teens.)

Go ahead—get your number. Choose the calculator for your age group, enter your vitals, and compute.

Child BMI

Child and Teen BMI Calculator

Child and Teen BMI Calculator

Units

Weight

Height

Sex

Birthdate

Adult BMI Calculator

Adult BMI Calculator

Units

Weight

Height

Adult BMI

Your BMI is a good starting point for determining your target weight, but it's not an absolute. Other factors, such as age, sex, race, and bone and muscle mass, also need to be considered. Talk with your physican if you have questions about your BMI.

Underweight Healthy Overweight Obese
Less than 18.5 18.5-24.9 25.0-29.9 Above 30

Your BMI

0.0