Normal weight for 3 month olds (lbs)
The average weight for 3 month old baby boys is 14.1 lbs and 3 month old baby girls average 12.9 lbs1 The tables below show the distribution of weight by percentile of the 3 month year old population.
Current units = pounds. View this page in kilograms.
Body weight percentile table for 3 month old baby boys
| Percentile | Weight |
|---|---|
| 3rd | 11 lbs |
| 5th | 11.4 lbs |
| 10th | 11.9 lbs |
| 25th | 12.9 lbs |
| 50th | 14.1 lbs |
| 75th | 15.3 lbs |
| 90th | 16.4 lbs |
| 95th | 17.2 lbs |
| 97th | 17.6 lbs |
Body weight percentile table for 3 month old baby girls
| Percentile | Weight |
|---|---|
| 3rd | 10 lbs |
| 5th | 10.4 lbs |
| 10th | 10.9 lbs |
| 25th | 11.9 lbs |
| 50th | 12.9 lbs |
| 75th | 14 lbs |
| 90th | 15 lbs |
| 95th | 15.6 lbs |
| 97th | 16 lbs |
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?