Average Height for a 3-Year-Old Girl
The average (50th-percentile) height for a 3-year-old girl (36 months) is 95.1 cm (37.4 in), based on the WHO Child Growth Standards. Across the healthy range, most girls this age stand between 87.9 cm (34.6 in) and 102.2 cm (40.2 in). (height is measured standing from age 2)
| Percentile | Metric | Imperial |
|---|---|---|
| 3rd | 87.9 cm | 34.6 in |
| 15th | 91.1 cm | 35.9 in |
| 50th | 95.1 cm | 37.4 in |
| 85th | 99.0 cm | 39.0 in |
| 97th | 102.2 cm | 40.2 in |
What's typical at this age
Three-year-olds typically add around 7 cm a year. Height now says more about eventual adult height than infant length ever did, though genetics gets the final word. Between 3 and 3½ years, the median girl grows about 4.0 cm.
A percentile compares your girl to other girls the same age — the 50th is simply the middle. Being above or below it is usually completely normal; a child who has always tracked the 15th or 85th percentile is typically growing exactly as they should. What pediatricians watch for is a sudden change in the pattern, not the number itself.
See your own child's percentile
Enter your child's exact weight and height for their personal WHO percentile and growth curve.
Open the Growth Calculator →Percentiles calculated from the WHO Child Growth Standards (2006). For information only — not medical advice. If you're concerned about your child's growth, speak to your pediatrician or health visitor. Full disclaimer.