Child Growth Percentile Calculator
Check where your child falls on the WHO growth curves for ages 0-5. Enter age, sex, height, and weight to see the percentile band and a plain-language interpretation.
What Is a Growth Percentile?
A growth percentile tells you how your child's measurement compares with other children of the same age and sex. A weight at the 60th percentile means 60 out of 100 same-age peers weigh less. The World Health Organization publishes standard growth curves for ages 0-5 built from healthy, breastfed children across six countries, which is the reference this calculator uses.
How the WHO Curves Work
WHO curves plot length or height, weight, weight-for-length, and head circumference against age. Individual percentiles matter less than the trend — a child tracking steadily along the 25th percentile is growing normally, while a child who drops from the 75th to the 25th over six months may need evaluation. Pediatricians review these charts at every well-child visit.
What the Percentile Bands Mean
Between the 5th and 95th percentile is the typical band. Below the 5th percentile can indicate undernutrition, a genetic short stature pattern, or an underlying condition and warrants a conversation with a pediatrician. Above the 95th percentile for weight-for-length may indicate overweight, though a very tall child can also sit in that band without any concern.
Important Safety Note
This calculator is informational only and is not medical advice. Growth is more than a single data point — it requires a trend over time, a pediatric exam, and context like parental height. Only a pediatrician can interpret your child's growth in full. Contact your clinician if you see a sudden drop in percentile or ongoing feeding concerns.