Normal weight for 9 year olds (kg)
The average weight for 9 year old boys is 28.7 kg and 9 year old girls average 29.1 kg1 The tables below show the distribution of weight by percentile of the 9 year year old population.
Current units = kilograms. View this page in pounds.
9 year old girls under 22 kg or over 38 kg and 9 year old boys who weigh less than 23 kg or more than 37 kg may want to consult with a doctor. The American Academy of Pediatrics recommends that children who's weight is outside the 5th or 85th percentiles seek professional advice to determine if further evaluation is needed2.
At 9 years old, children's bodies are still growing and adapting. The average weight for a 9-year-old typically ranges from 29 kg for boys and 29 kg for girls based on CDC growth charts1. Children at this age may experience variations in weight due to differences in metabolism and physical activity levels. Encouraging a supportive and non-judgmental environment can help children develop a healthy relationship with their bodies and promote a positive attitude towards their well-being.
Body weight percentile table for 9 year old boys
| Percentile | Weight |
|---|---|
| 3rd | 22.1 kg |
| 5th | 22.7 kg |
| 10th | 23.8 kg |
| 25th | 25.8 kg |
| 50th | 28.7 kg |
| 75th | 32.4 kg |
| 90th | 36.9 kg |
| 95th | 40.4 kg |
| 97th | 43.1 kg |
Body weight percentile table for 9 year old girls
| Percentile | Weight |
|---|---|
| 3rd | 21.6 kg |
| 5th | 22.3 kg |
| 10th | 23.5 kg |
| 25th | 25.9 kg |
| 50th | 29.1 kg |
| 75th | 33.3 kg |
| 90th | 38.2 kg |
| 95th | 41.8 kg |
| 97th | 44.6 kg |
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
- American Academy of Pediatrics Is Your Child Overweight?