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How fit are you? See how you measure up

Body composition: Body mass index

Your body mass index (BMI) is a calculation that indicates whether you have a healthy amount of body fat. You can determine your BMI with a BMI table or online calculator.

If you'd rather do the math yourself, divide your weight in pounds by your height in inches squared and multiply by 703. Or divide your weight in kilograms by your height in meters squared. (To determine your height in meters, divide your height in centimeters by 100.)

The following BMI results demonstrate whether you are at a healthy weight.

Interpretation of BMI results
BMI Weight status
Below 18.5 Underweight
18.5-24.9 Normal weight
25.0-29.9 Overweight
30 and above Obesity

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