WHO Growth Chart Calculator
Check your baby's weight and height percentile against the official WHO Child Growth Standards — the globally recommended reference for infants under 2, used in over 180 countries.
Infant Growth Percentile Calculator.
Enter your baby's measurements and location to see percentiles on the most appropriate growth chart for your region — with interactive curves, growth spurt indicators, and a printable report.
Weight-for-age
Height-for-age
What do these numbers mean?
Multi-child dashboard.
No saved measurements yet
Calculate your baby's percentiles above, then click "Save to Dashboard" to track growth over time.
Open calculatorAll data is stored only in your browser's localStorage. Nothing is sent to any server.
Why the WHO chart is the global standard
Most growth charts describe how a specific population of children actually grew. The WHO Child Growth Standards are different: they describe how children grow under optimal conditions — adequate nutrition, breastfeeding, no smoking, and good healthcare access — regardless of ethnicity or country. Researchers followed children from six countries across four continents to build a single, population-neutral prescriptive standard.
Because of this design, the WHO chart is the reference both the World Health Organization and the CDC recommend for all infants and toddlers under 2 years old, no matter where they were born. It's also the standard used by pediatricians and health ministries in more than 180 countries.
How to read your result
The calculator above plots your baby's weight and length/height against WHO percentile bands (P3–P97). A result between the 3rd and 97th percentile is within the typical healthy range. What matters more than any single number is whether your baby tracks a consistent curve across multiple visits.