BMI Percentile Calculator for Child and Teen
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This calculator provides BMI and the corresponding BMI-for-age percentile based on the CDC growth charts for children and teens (ages 2 through 19 years). Because of possible rounding errors in age, weight, and height, the results from this calculator may differ slightly from BMI-for-age percentiles calculated by other programs.
For adults 20 years old and older, use the Adult BMI Calculator.
BMI Calculator for Child and Teen
❗ Please check the accuracy of the information you entered.
Birth Date must be at least 2 years before Date of Measurement. If the child is under 2 years old, BMI cannot be calculated. Consult a healthcare provider for assessment.
Based on the Birth Date and Date of Measurement, the calculated age is 20 years or older. This calculator can be used only if the calculated age is less than 20 years old. If the dates you entered are correct, use the Adult BMI Calculator.
Age: Select Age
or enter only the total number of months:
Birth Date: Select Date
Date of Measurement: Select Date
Sex: Select Sex
Height (decimal places allowed): Select Height
Height, to nearest 1/8 inch: Select Height
(12 inches = 1 foot; Example: 4 feet, 5 1/2 inches)
Weight (decimal places allowed): Select Weight
Weight, to nearest 1/4 (.25) pound: Select Weight
(8 ounces = 1/2 pounds; Example: 75 3/4 pounds)
Height (decimal places allowed): Select Height
Weight (decimal places allowed): Select Weight
Note: Please keep in mind that this BMI calculator is not meant to serve as a source of clinical guidance and is not intended to be a substitute for professional medical advice. Because BMI is based on weight and height, it is only an indicator of body fatness. Individuals with the same BMI may have different amounts of body fat. Persons may consider seeking advice from their healthcare providers on healthy weight status.
Because of possible rounding errors in age, weight and height, the results from this calculator may differ slightly from BMI-for-age percentiles calculated by other programs.
- Page last reviewed: October 22, 2018
- Page last updated: October 22, 2018
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