Average height
Average Height for a 9-Year-Old Girl
By the Taller team · Updated · 4 min read · How we write
The average height for a 9-year-old girl in the US is about 4'5.5" (135 cm), the 50th percentile on the CDC growth charts (measured halfway through the year, at 9½). Most 9-year-old girls are between 4'1.5" and 4'9.5" tall (5th to 95th percentile).
Height percentiles for 9-year-old girls
A percentile tells you how many girls of the same age are shorter: at the 75th percentile, a girl is taller than 75 out of 100 girls 9 years old.
| Percentile | At 9 | At 9½ |
|---|---|---|
| 5th | 4'0.5" (123 cm) | 4'1.5" (125 cm) |
| 10th | 4'1.5" (125 cm) | 4'2" (127 cm) |
| 25th | 4'2.5" (129 cm) | 4'3.5" (131 cm) |
| 50th (median) | 4'4.5" (133 cm) | 4'5.5" (135 cm) |
| 75th | 4'6" (137 cm) | 4'7" (140 cm) |
| 90th | 4'7.5" (141 cm) | 4'8.5" (144 cm) |
| 95th | 4'8.5" (144 cm) | 4'9.5" (146 cm) |
How much will a 9-year-old girl grow?
At the median, girls grow about 2.0 in (5.1 cm) between 9 and 10. A girl of average height at 9 has reached about 81% of adult height and still has around 12.0 in (30 cm) to go.
At 9, some girls are starting puberty, which is usually the first sign that the growth spurt is coming. Others will start a year or more later.
Check a height
Enter a height to see its exact percentile for girls aged 9.
Is my daughter’s height normal?
Any height between roughly the 3rd and 97th percentile is common. What matters more is the trend: a child who stays on the same percentile line over the years is usually growing normally. Talk to a doctor if your child is below the 3rd percentile, much shorter than the parents’ heights suggest, has stopped growing, or has crossed two major percentile lines downward. See the height percentile calculator and height predictions for 9-year-old girls.
Average height for girls by age
| Age | Median height | Normal range (5th–95th) |
|---|---|---|
| 8 years | 4'3.5" (130 cm) | 3'11.5" – 4'7.5" |
| 9 years | 4'5.5" (135 cm) | 4'1.5" – 4'9.5" |
| 10 years | 4'7.5" (141 cm) | 4'3" – 5'0" |
| 11 years | 4'10" (148 cm) | 4'5.5" – 5'3" |
| 12 years | 5'1" (155 cm) | 4'8" – 5'5.5" |
| 13 years | 5'2.5" (159 cm) | 4'10.5" – 5'7" |
| 14 years | 5'3.5" (161 cm) | 4'11.5" – 5'7.5" |
| 15 years | 5'4" (162 cm) | 4'11.5" – 5'8" |
| 16 years | 5'4" (163 cm) | 5'0" – 5'8.5" |
| 17 years | 5'4" (163 cm) | 5'0" – 5'8.5" |
| 18 years | 5'4.5" (163 cm) | 5'0" – 5'8.5" |
Frequently asked questions
Is 4'7" tall for a 9-year-old girl?
Yes. 4'7" is about the 74th percentile for girls aged 9, so taller than roughly 74 out of 100. Being tall at 9 can also mean an early growth spurt, so it doesn’t guarantee being tall as an adult.
Is 4'3" short for a 9-year-old girl?
4'3" is about the 18th percentile for girls aged 9: below average but well within the normal range. Many girls who are shorter at 9 simply start puberty later and catch up.
How much will a 9-year-old girl grow?
At the median, girls grow about 2.0 in (5.1 cm) between 9 and 10, and about 12.0 in (30 cm) in total before adulthood. The real number depends on genetics and puberty timing.
How tall will a 9-year-old girl be as an adult?
A girl of median height at 9 is on track for about 5'4.5" (163 cm). For a personal estimate that also uses the parents’ heights, use the height calculator.
Sources
- Clinical Growth Charts (2000 CDC stature-for-age) — CDC / National Center for Health Statistics
- Data Table of Stature-for-age Charts (LMS parameters) — CDC
- Puberty — Nemours KidsHealth
Keep reading
This page is for general education and is not medical advice. Growth is very individual: if you are worried about your height, growth or puberty, talk to a doctor or a pediatric endocrinologist.