WHO Growth Standard for 0 to 24 months

Uses the 2006 WHO growth standard charts to report percentiles and Z-scores on infants from 0 to 24 months of age.

Per the CDC, WHO Growth Standards are recommended for use in the U.S. for infants and children 0 to 2 years of age

In 2006, the World Health Organization (WHO) released an international growth standard which describes the growth of children living in environments believed to support optimal growth.

Citing: If you use PediTools for a publication or clinical guideline, please consider citing: Chou JH et al., J Med Internet Res 2020;22(1):e16204 (available open access [PDF])

Growth: from 0 to 24 months

Male Female
Age (months)
OR Date of birth
and Date of measure
Weight (kg)
Head circumference (cm)
Length (cm)

Optional: GA at birth

Tips and Tricks

  • Valid ages from 0 to 24 months
  • Weight: grams assumed. To enter pounds and ounces, enter #-#; e.g., 8-4 for 8 lb and 4 oz
  • Head circumference: cm assumed. To enter inches, enter #"; e.g., 19" for 19 inches
  • Height: cm assumed. To enter feet and inches, enter #' #"; e.g., 4' 5" for 4 feet 5 inches
  • Gestational age, enter in the form of ## #/7; e.g., 30 3/7 for 30 weeks and 3 days gestation

Based on