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Child Growth Percentile Calculator
Compare a child's weight, height, and head circumference against the WHO Child Growth Standards for ages 0–5 years, all computed in your browser.
HOW TO USE
- 1Pick the child's sex (boy or girl).
- 2Enter age in years and months (0 to 5 years).
- 3Enter weight (kg or lb), height (cm or in), and head circumference (cm).
- 4Read the weight, height and head percentiles with WHO z-scores in the results.
EXAMPLE
INPUT
Sex: Boy · Age: 1 year 0 months · Weight: 10 kg · Height: 75 cm · Head: 46 cm
OUTPUT
Weight: 62.9th percentile · Height: 37.6th percentile · Head: 47.9th percentile
FAQ
What are growth percentiles?
A percentile says how a child compares to healthy peers of the same age and sex. The 50th percentile is the median: half of healthy children are below it. Values between the 3rd and 97th percentile are generally considered within the typical range.
What data does this calculator use?
It uses the LMS values published in the WHO Child Growth Standards for children aged 0 to 5 years, the same reference used by pediatricians worldwide. Measurements below the 2nd percentile or above the 98th percentile fall outside the WHO-defined typical band for a healthy population.
Why does it ask for head circumference?
Head circumference is routinely measured during early childhood because it tracks brain growth. A head size below the 2nd percentile or above the 98th percentile warrants a pediatrician's review alongside other growth measures.
Is this a medical diagnosis?
No. This tool is informational. Growth charts describe a healthy population, not an individual child, a single measurement is rarely concerning. Always discuss growth with a pediatrician before drawing conclusions.