Size chart
Carter's baby size chart
Carter's publishes 12 baby and toddler sizes, Up to 5 lb to 4T, by weight and height. Checked against the brand's published chart on October 8, 2026.
Size chart
- Up to 5 lbup to 5 lb
- Preemieup to 6 lb
- Newborn6 to 9 lb
- 3M9 to 12.5 lb
- 6M12.5 to 17 lb
- 9M17 to 21 lb
- 12M21 to 25 lb
- 18M25 to 28 lb
- 24M28 to 30 lb
- 2T29 to 31 lb
- 3T31 to 33 lb
- 4T33 to 37.5 lb
Weight in lb, exactly as Carter's publishes it.
Does Carter's run small or large?
True to sizeAcross 7 size labels that other brands also use, Carter's published ranges sit close to the middle of the pack. The same label covers about the same baby.
Based on published size charts compared with other brands. This is not a fit review.
What a typical baby wears in Carter's
For a baby in the middle of the WHO growth chart, with room to grow. Your baby's own measurements give a closer answer in the calculator below.
| Age | Typical weight | Typical length | Carter's size |
|---|---|---|---|
| Birth | 7.3 lb | 19.5 in | Newborn |
| 3 months | 13.5 lb | 23.9 in | 6M |
| 6 months | 16.8 lb | 26.2 in | 6M |
| 9 months | 18.9 lb | 28 in | 9M |
| 12 months | 20.5 lb | 29.5 in | 12M |
| 18 months | 23.3 lb | 32.1 in | 24M |
| 2 years | 26.1 lb | 34 in | 2T |
| 3 years | 31.1 lb | 37.6 in | 3T |
The chart as published
The original wording from Carter's chart, size by size.
| Size | Weight | Height or length | Age |
|---|---|---|---|
| UP5LB | Up to 5 lb | Up to 17" | Not published |
| PRE | Up to 6 lb | Up to 18" | Not published |
| NB | 6 - 9 lb | 18 - 21.5" | Not published |
| 3M | 9 - 12.5 lb | 21.5 - 24" | Not published |
| 6M | 12.5 - 17 lb | 24 - 27" | Not published |
| 9M | 17 - 21 lb | 27 - 28.5" | Not published |
| 12M | 21 - 25 lb | 28.5 - 30" | Not published |
| 18M | 25 - 28 lb | 30 - 32" | Not published |
| 24M | 28 - 30 lb | 32 - 34" | Not published |
| 2T | 29 - 31 lb | 35 - 36.5" | Not published |
| 3T | 31 - 33 lb | 36.5 - 39" | Not published |
| 4T | 33 - 37.5 lb | 39 - 41.5" | Not published |
Notes on this chart. The chart is organized by garment type. These rows are from the Tops section, and the Bodysuits and Pajamas sections list the same numbers. As published, 24M tops out at 34 in and 30 lb while 2T starts at 35 in and 29 lb. The Dresses, Rompers and Overalls section lists 4T weight as 34 to 37.5 lb.
Sources
- Brand's own site: https://www.carters.com/size-chart
Retrieved October 4, 2026. Brands update their charts, so check the brand's page before a big purchase. This site is not affiliated with Carter's.
Calculator
What Carter's size on your date?
Start with a birth or due date
Sizes for each brand you pick will appear here, ready for the date you choose.