Normal height for 9 month olds
The average height for 9 month old baby boys is 28.5 in and 9 month old baby girls average 27.8 in1 The tables below show the distribution of height by percentile of the 9 month year old population.
Current units = feet/inches. View this page in centimeters.
Height percentile table for 9 month old baby boys
| Percentile | Height |
|---|---|
| 3rd | 26.6 in |
| 5th | 26.8 in |
| 10th | 27.1 in |
| 25th | 27.8 in |
| 50th | 28.5 in |
| 75th | 29.2 in |
| 90th | 30 in |
| 95th | 30.4 in |
| 97th | 30.7 in |
Height percentile table for 9 month old baby girls
| Percentile | Height |
|---|---|
| 3rd | 25.7 in |
| 5th | 26 in |
| 10th | 26.4 in |
| 25th | 27.1 in |
| 50th | 27.8 in |
| 75th | 28.5 in |
| 90th | 29.2 in |
| 95th | 29.6 in |
| 97th | 29.8 in |
Source Citations
- Robert J. Kuczmarski Dr.P.H. et al., Centers for Disease Control and Prevention, U.S. Department of Health & Human Services 2000 CDC Growth Charts for the United States: Methods and Development