Tools for Calculating Body Mass Index (BMI)

Body Mass Index (BMI) is a tool for indicating weight status in adults and for assessing children and teens who are underweight, overweight, and risk for overweight.

For adults older than 20, BMI is a measure of body weight adjusted for height.

BMI for children and teens (2 to 20 years old) is calculated differently than adult BMI. Also called "BMI-for-age," measurements are gender and age specific, due to a child's rate of growth and development.

BMI calculators

One side of this double-sided BMI Wheel calculates BMI for children—20 to 80 pounds—while the other side calculates BMI for adolescents and adults, 80 to 350 pounds. The CD-sized BMI Wheels are constructed of a durable plastic material and are available for $5.50 at www.pamedsoc.org/store.
The children's BMI-percentile-for-age calculator from The Children's Nutrition Research Center automatically adjusts for differences in height, age, and gender, making it a good tool for evaluating a growing child's weight.
These calculators are from the Centers for Disease Control and Prevention (CDC):

Last Updated: 7/18/2008

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Body Mass Index (BMI) Wheel

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