Enter your sex, height, and weight below (in either U.S. or metric form), select your birthdate, and click "Calculate BMI & Percentiles."  Please see explanation below.

Your BMI, height, and weight percentiles show how you compare to everybody else. For example, if you are 50th percentile in height, that means that you are taller than 50 out of 100 typical kids your age and sex.  If you are 80th percentile in weight that means you are heavier than 80 out of 100 kids your age and sex, according to the CDC National Center for Health Statistics.

Your BMI (Body Mass Index) is a number that shows how your your weight compares to your height (BMI = weight / height²).  BMI indicates how thin or how fat you are (unless you are very muscular, in which case BMI is not accurate). The higher the BMI the more fat you have compared to your height.  What is the BMI number that indicates you are overweight?  In adults a BMI over 25 is considered overweight. But in kids the overweight BMI number is not the same as in adults, and is is not even the same for kids of different ages.  Therefore, it is important to use a BMI calculator especially for kids, and to also use what is called the BMI percentile chart.  The BMI percentile chart works for all ages and avoids having to have a separate BMI chart for each age child.  Your BMI percentile shows how your BMI compares to other kids else your age and sex.  For example if your BMI is 24 and is 80th percentile for your age, that means your BMI is 80th compared to 100 typical kids your age and sex.  Why is BMI percentile important?  Because BMI percentile is related to health risks.*  And most importantly, the overweight and underweight BMI percentile values are the same for all ages.

• BMI 1st to 4th percentile: Underweight*
• BMI 5th to 84th percentile: Healthy Weight*
• BMI 85th to 94th percentile: Overweight*
• BMI 94th to 100th percentile: Obese*

How is BMI is related to health risks?

• Six out of ten children and teens with a BMI above the 94th percentile have at least one risk factor for cardiovascular disease while 2 out of 10 have two or more risk factors for cardiovascular disease.
• Children with BMI 85th-94th percentile have similar, although somewhat less, risk factors for cardiovascular disease.
• Overweight children are likely to become overweight adults.

*Guidelines of the American Medical Association Committee on Overweight in Children and Adolescents.

Weight-for-age percentiles: Boys, 2 to 20 years

Weight-for-age percentiles: Girls, 2 to 20 years

Height-for-age percentiles: Boys, 2 to 20 years

Height-for-age percentiles: Girls, 2 to 20 years

Body mass index-for-age percentiles: Boys, 2 to 20 years

Body mass index-for-age percentiles: Girls, 2 to 20 years

Center for Disease Control BMI Calculator

Home	Pre-Teens	Teens	Parents	eCare

© 2000-2008 eHealth International, Inc. All rights reserved.