Growth Charts

Use WHO standards for <2 years (breastfed-infant reference, prescriptive) and CDC charts for ≥2 years (US reference, descriptive). AAP officially endorses this split since 2010.

WHO (0 – <2 yr)

• WHO Child Growth Standards (landing)
• WHO Standards 0–24 mo — printable PDFs (CDC-hosted)
• Weight-for-age (boys / girls)
• Length-for-age and head circumference

CDC (≥2 yr)

• CDC Growth Charts landing
• Clinical charts (full Set 2 with 3rd/97th percentiles, color): local PDF · upstream
• Per-chart selection (clinical, by age range & metric)

CDC Extended BMI Charts (severe pediatric obesity, ≥2 yr)

• Extended BMI-for-age growth charts — published 2022 to track BMI in children with severe obesity (previously capped at the 97th percentile).

Specialty / condition-specific charts

• Trisomy 21 (Down syndrome) growth charts (AAP, 2015) — Zemel BS et al., Pediatrics.
• Turner syndrome growth charts
• Preterm infant growth charts (Fenton 2013) — peer-reviewed Fenton curves.

Calculators

• WHO Child Growth Z-score Calculator (CDC SAS macros)
• Pediatric BMI Percentile Calculator (CDC)

Citation: Grummer-Strawn LM, Reinold C, Krebs NF; CDC. Use of World Health Organization and CDC Growth Charts for Children Aged 0–59 Months in the United States. MMWR Recomm Rep. 2010;59(RR-9):1–15.