About Pediatric Growth Percentiles
Growth percentiles compare a child's measurements to a reference population of the same age and sex. This calculator uses the CDC 2000 growth reference charts — the most widely used in the United States and many international settings. The WHO growth standards (2006) are generally preferred for children under 2 in many countries. Both use similar methodology but were derived from different populations.
BMI-for-Age Classification (CDC)
| BMI Percentile | Category | Action |
|---|---|---|
| < 5th | Underweight | Nutritional assessment; consider organic causes |
| 5th–84th | Healthy weight | Continue routine monitoring |
| 85th–94th | Overweight | Lifestyle counselling; repeat in 6 months |
| ≥ 95th | Obese | Comprehensive assessment; comorbidity screening |
Important Note on BMI in Children
Unlike adults, BMI in children must be interpreted using age- and sex-specific percentiles rather than fixed cut-offs. A BMI of 22 may be obese in a 10-year-old but healthy in a 16-year-old. Always plot on the appropriate CDC or WHO growth chart and interpret in the context of growth trajectory over time — a single measurement is less informative than serial measurements.
Related Tools on MediCalc Pro
For weight-based drug dosing, see Pediatric Dose Calculator. For fluid requirements by weight, see Pediatric Fluid Requirement. For neonatal assessment, see APGAR Score. For adult BMI classification, see BMI Calculator. For gestational weight gain monitoring during pregnancy, see Gestational Weight Gain. For vaccine schedule by age, see Vaccine Schedule.
References
- Kuczmarski RJ, et al. "CDC Growth Charts: United States." Advance Data. 2000;(314):1-27.
- WHO Multicentre Growth Reference Study Group. "WHO Child Growth Standards." Acta Paediatrica Suppl. 2006;450:1-101.
- Barlow SE; Expert Committee. "Expert committee recommendations regarding the prevention, assessment, and treatment of child and adolescent overweight and obesity." Pediatrics. 2007;120(Suppl 4):S164-192.