| Preemie |
up to 6 lbs / up to 2.7 kg |
up to 17 in. / up to 43 cm |
| Newborn |
6-9 lbs (9M)/ 2.7-4.1 kg |
up to 21.5 in. / up to 55 cm |
| 0-3 months (3M) |
9-12.5 lbs / 4.1 - 5.7 kg |
21.5 - 24 in. / 55 - 61 cm |
| 3-6 months (6M) |
12.5 - 17 lbs / 5.7 - 7.7 kg |
24 - 26.5 in. / 61 - 67 cm |
| 6-9 months (9M) |
17 - 21 lbs / 7.7 - 9.5 kg |
up to 28.5 in. / up to 72 cm |
| 12 months |
21 to 25 lbs / 9.5 -11.3 kg |
28.5 to 30.5 in. / 72 to 78 cm |
| 18 months |
25- 28 lbs / 11.3 - 12.7 kg |
30.5 to 32.5 in. / 78 - 83 cm |
| 24 months |
28 - 30 lbs / 12.7 - 13.6 kg |
32.5 to 34 in. / 83 - 86 cm |
