The size of diaper for an infant can be selected based on the infant's body weight and physical measurements.
NOTE: Each manufacturer has different sizes and weight cutoffs. The following is based on the measurements used by the Diapersite brand.
|
Number |
Size |
Weight Range |
|
00 |
preemie |
<= 6 pounds |
|
0 |
newborn |
4 - 9 pounds |
|
1-2 |
small to medium |
8 - 18 pounds |
|
3 |
medium |
14 - 24 pounds |
|
4 |
large |
22 - 33 pounds |
|
5 |
X-large |
27 - 35 pounds |
|
6 |
XX-large |
33 - 44 pounds |
If the waist circumference or the distance from the navel to mid-back via the crotch exceeds cutoff values, then the next larger size may be needed.
|
Size |
Waist Circumference |
Navel to Mid-Back |
|
preemie |
<= 12 inches |
<= 8 inches |
|
newborn |
<= 15 inches |
<= 11 inches |
|
small to medium |
<= 16 inches |
<= 14 inches |
|
medium |
<= 18 inches |
<= 17 inches |
|
large |
<= 19 inches |
<= 18 inches |
|
X-large |
<= 20 inches |
<= 18 inches |
|
XX-large |
<= 21 inches |
<= 19 inches |
