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.


Support PediTools

Donations to support web-hosting and development costs welcome.


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