Child & Baby Growth Percentile Calculator (WHO)

Calculate your baby or child's growth percentile (weight, height, head circumference) using WHO charts. Track their development curve up to 20 years.

Child growth percentiles

Check how your child compares with WHO growth curves (0-6 years) for weight, height or head circumference. We add a projected line if they remain on the same percentile.

Unit system

Measurement focus

Registered sex

Allowed range: 0 to 20 years.

Additional months between 0 and 11.

Percentile summary

Choose the measurement, sex, age (years and months), and current value to understand the position on the curve.

Comparative curve

Age (years/months)

Suggested article

How to read child growth percentiles

Use WHO percentiles to interpret weight, length/height and head circumference and know when to call the pediatrician.

Read the full article
How to read child growth percentiles

Growth percentiles guide

Percentiles show how a measurement (weight, height, head circumference) compares to the WHO reference population. They are used to track child development.

Interpretation

  • 50th Percentile: This is the median; half of healthy children are above and half are below.
  • Normal ranges: Usually, falling between the 3rd and 97th percentiles is considered normal, provided growth is consistent.

How it is calculated

We use the World Health Organization (WHO) standardized tables and formulas for children aged 0-5 and 5-19 years.

More calculators

Keep exploring helpful tools

Browse all