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BMI Pediatric Percentile Calculator
Estimate child and adolescent BMI-for-age percentiles, growth z-scores, and pediatric nutritional weight status.
About Pediatric BMI Percentiles
Children and teens undergo non-linear physical development. Pediatric adiposity is classified using sex-specific age growth charts rather than static adult cutoffs.
Percentile Classifications
- Underweight: Below the 5th percentile
- Healthy Weight: 5th percentile to below the 85th percentile
- Overweight: 85th percentile to below the 95th percentile
- Obese: Equal to or greater than the 95th percentile
Frequently Asked Questions
Why are adult BMI cutoffs inappropriate for children?
Body composition and hydration ratios shift substantially as children experience skeletal growth spurts and hormonal maturation.
What does a 70th percentile score indicate?
It means the child's BMI is higher than 70% of peers of the exact same age and biological sex.
Which growth standard does this reference?
The calculation approximates CDC and WHO pediatric growth reference curves for children ages 2 to 19.
Should pediatric weight management restrict calories?
Pediatric guidelines emphasize nutrient density and active play to support linear growth rather than severe caloric restriction.
How to use
Calculate in three steps
- 1Enter your valuesUse the fields above and check the units shown beside each input.
- 2Run the calculationSelect Calculate to refresh the result with your latest values.
- 3Review or shareCompare the result, reset the form, print it, or share this page.
Inputs
What you need
Child Biological SexValue
Age (Years)years
Height (cm)cm
Weight (kg)kg