How to read this chart
- Find the age on the bottom axis and the height on the left axis; where they meet is the plotted point.
- Curves P3–P97 are percentiles. A point on P25 means taller than about 25% of girls that age in the reference.
- The bold P50 curve is the median — half of the reference population falls above it, half below.
- Tracking matters most: a child following their own curve steadily over time is the reassuring pattern, wherever that curve sits.
About the two references
The CDC tab shows stature-for-age for ages 2–20, the reference used across the US. The WHO tab shows length/height-for-age from birth to 5 years — recumbent length under 24 months, standing height from 24 months — the international standard. Curves stop exactly where each reference's published tables stop; we never extend them.
Prefer numbers to pictures? Get the exact percentile and z-score in the girls height percentile calculator, or estimate adult height with the child height predictor.