Carter's Size Guide
| Size | Height (inches) | Height (cm) | Weight (lb) | Weight (kg) |
| Newborn (NB) | Up to 21.5 | Up to 54.61 | 5 - 8 | 2.2 - 3.6 |
| 3M | 21.5 - 24 | 54.61 - 60.96 | 8 - 12.5 | 3.6 - 5.6 |
| 6M | 24 - 26.5 | 60.96 - 67.31 | 12.5 - 16.5 | 5.6 - 7.4 |
| 9M | 26.5 - 28.5 | 67.31 - 72.39 | 16.5 - 20.5 | 7.4 - 9.2 |
| 12M | 28.5 - 30.5 | 72.39 - 77.47 | 20.5 - 24.5 | 9.2 - 11.1 |
| 18M | 30.5 - 34 | 77.47 - 82.55 | 24.5 - 27.5 | 11.1 - 12.4 |
| 24M | 32.5 - 34 | 82.55 - 88.36 | 27.5 - 30 | 12.4 - 13.6 |