Normal weight for 12 month olds (lbs)
The average weight for 12 month old baby boys is 23.1 lbs and 12 month old baby girls average 21.3 lbs1 The tables below show the distribution of weight by percentile of the 12 month year old population.
Current units = pounds. View this page in kilograms.
12 month old girls under 18 lbs or over 24 lbs and 12 month old boys who weigh less than 19 lbs or more than 27 lbs 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.
Body weight percentile table for 12 month old baby boys
| Percentile | Weight |
|---|---|
| 3rd | 18.8 lbs |
| 5th | 19.3 lbs |
| 10th | 20.1 lbs |
| 25th | 21.4 lbs |
| 50th | 23.1 lbs |
| 75th | 24.8 lbs |
| 90th | 26.6 lbs |
| 95th | 27.7 lbs |
| 97th | 28.5 lbs |
Body weight percentile table for 12 month old baby girls
| Percentile | Weight |
|---|---|
| 3rd | 17.5 lbs |
| 5th | 17.9 lbs |
| 10th | 18.6 lbs |
| 25th | 19.8 lbs |
| 50th | 21.3 lbs |
| 75th | 22.9 lbs |
| 90th | 24.5 lbs |
| 95th | 25.5 lbs |
| 97th | 26.1 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?