Baby Growth Percentile Calculator (0–24 Months)
Enter your baby’s gender, age in months (0–24) and a weight, length or head-circumference reading to check its WHO 0–2 year growth percentile band — e.g. a 6-month-old boy weighing 8.2 kg falls around P50–P85.
For parents’ reference only. Developmental assessment is done by your pediatrician — this is not a medical diagnosis.
Your baby’s growth percentile result will appear here.
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What is it
WHO growth standards for children under 2 are built from large healthy cohorts; P3–P97 marks the common normal range. A single reading between P3 and P97 is usually normal variation — tracking trends matters more than one number.
Notes & fun facts
After each pediatric visit, jotting down the scale and measuring-board readings and comparing them with WHO percentiles shows parents whether baby is steadily following its own curve — instead of worrying about one absolute number.
Origin & history
The modern reference for infant growth is the WHO Child Growth Standards, published by the World Health Organization in 2006 on large data from healthy breastfed children in multiple countries, replacing earlier curves built on narrower samples. They express the normal range in percentiles, so children from different countries can be compared on one common ruler, and they have become the shared reference for pediatric care worldwide.
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