Child Growth Percentile Calculator
Plot a child's height and weight against CDC growth percentiles for ages 2 to 20.
About the Child Growth Percentile Calculator
Enter the child's sex, age, height and weight, in metric or imperial. The calculator gives the height and weight percentiles on the CDC charts and the median for that age.
CDC 2000 growth charts are the US reference for children 2 and older. A percentile shows how a measurement compares with children of the same age and sex. Growth that follows a curve is reassuring; crossing percentile lines, or being below the 3rd or above the 97th, deserves a doctor's look.
The formula
z = ((X ÷ M)^L − 1) ÷ (L × S); percentile = Φ(z)
Worked example
An 8-year-old girl, 50.5 in (128.3 cm) tall and 57 lb (25.9 kg)
- Height: 54.6th percentile
- Weight: 52nd percentile
- Median height at this age 127.6 cm
Questions people ask
Does height percentile predict adult height?
Roughly; puberty timing changes things. See the child height predictor.
Should I use WHO or CDC charts?
WHO under 2, CDC from 2 years (CDC and AAP guidance).