Pediatric BMI Percentile Calculator
Calculate BMI percentile for children and teens aged 2-20 years based on CDC growth charts
About this calculator
The Pediatric BMI Percentile Calculator determines where a child's body mass index falls compared to other children of the same age and sex using CDC growth charts. This tool helps parents, healthcare providers, and educators assess whether a child's weight is within a healthy range for their development stage. BMI percentiles are more accurate than adult BMI calculations for children because they account for normal growth patterns and body composition changes that occur during childhood and adolescence.
How to use
Enter your child's age (2-20 years), weight, height, and select their sex. The calculator will compute their BMI and display the corresponding percentile based on CDC growth charts. Results show where your child ranks compared to peers of the same age and sex.
Frequently asked questions
What BMI percentile range is considered healthy for children?
A healthy BMI percentile for children typically falls between the 5th and 85th percentiles on CDC growth charts.
How often should I check my child's BMI percentile?
Check BMI percentile during routine pediatric visits, typically every 6-12 months, or as recommended by your healthcare provider.
Is BMI percentile different from adult BMI calculation?
Yes, pediatric BMI percentiles compare children to peers of same age and sex, while adult BMI uses fixed categories.