By the WHO growth reference, girls who have just turned 1 have a median height of 74 cm (2′5″). Most children (94%) are between 69.2 cm (2′3″) and 78.8 cm (2′7″).
74 cm (2′5″)
median height (P50)
69.2–78.8 cm
P3–P97 range
| Age | P3 | P15 | P50 | P85 | P97 |
|---|---|---|---|---|---|
| 1 year | 69.2 | 71.3 | 74 | 76.7 | 78.8 |
| 1 year 3 months | 72.4 | 74.7 | 77.5 | 80.4 | 82.7 |
| 1 year 6 months | 75.3 | 77.7 | 80.7 | 83.7 | 86.2 |
| 1 year 9 months | 77.9 | 80.5 | 83.7 | 86.8 | 89.4 |
P50 is the median: half of children the same age are shorter and half taller. P3 to P97 is the range WHO treats as normal.
| Height | Children shorter |
|---|---|
| 65 cm (2′2″) | 0.1% |
| 70 cm (2′4″) | 6% |
| 75 cm (2′6″) | 65% |
| 80 cm (2′7″) | 99% |
Values come straight from World Health Organization tables: the WHO Child Growth Standards (2006) for ages 0–5 and the WHO Growth Reference (2007) for ages 5–19. National references (CDC in the US, for example) can differ by a few centimetres. This is not a diagnostic tool: growth over time matters more than a single measurement, and questions about your child's growth belong with their doctor.