Brand vs brand

Gerber Childrenswear vs Wonder Nation sizes

Of Gerber Childrenswear's 11 baby and toddler sizes, 7 line up closely with a Wonder Nation size, 4 are partial matches, and 0 have no clean match. Both charts list weight and height, so the comparison uses both.

Closest pairs: Gerber Childrenswear Preemie = Wonder Nation Preemie, Gerber Childrenswear Newborn = Wonder Nation Newborn, Gerber Childrenswear 0-3M = Wonder Nation 0-3M, Gerber Childrenswear 0-6M = Wonder Nation 3-6M.

Watch the labels: Gerber Childrenswear 0-3M is closer to Wonder Nation 0-3M than to Wonder Nation's own 0-3M; Gerber Childrenswear 3-6M is closer to Wonder Nation 3-6M than to Wonder Nation's own 3-6M; Gerber Childrenswear 6-9M is closer to Wonder Nation 6-9M than to Wonder Nation's own 6-9M.

Gerber Childrenswear True to sizeWonder Nation Runs small

Based on published size charts compared with other brands.

Size by size, on one scale

Each block is one size, placed where the brand's chart puts it. Blocks that sit above each other fit the same baby.

Weight (lb)

Gerber Childrenswear

Preemie: up to 5.1 lb
Newborn: 5.1 to 7.9 lb
0-3M: 7.9 to 11.9 lb
0-6M: up to 16.1 lb
3-6M: 11.9 to 16.1 lb
6-9M: 16.1 to 20.1 lb
12M: 20.1 to 24 lb
18M: 24 to 28 lb
24M/2T: 28 to 32 lb
3T: 32 to 35.1 lb
4T: 35.1 to 39 lb

Wonder Nation

Preemie: up to 5 lb
Newborn: 5.5 to 7.5 lb
0-3M: 6.5 to 12 lb
3-6M: 12.5 to 16 lb
6-9M: 16.5 to 19 lb
12M: 19.5 to 22 lb
18M: 22.5 to 26 lb
24M: 26.5 to 30 lb
2T: 26.5 to 30 lb
3T: 30.5 to 34 lb
4T: 34.5 to 38 lb

Height (in)

Gerber Childrenswear

Preemie: up to 17 in
Newborn: 17 to 21 in
0-3M: 21 to 24 in
0-6M: 17 to 26 in
3-6M: 24 to 26 in
6-9M: 26 to 28 in
12M: 28 to 30 in
18M: 30 to 32 in
24M/2T: 32 to 34 in
3T: 34 to 38 in
4T: 38 to 40 in

Wonder Nation

Preemie: up to 17 in
Newborn: 17.5 to 21 in
0-3M: 20.5 to 23 in
3-6M: 23.5 to 26 in
6-9M: 26.5 to 27.5 in
12M: 28 to 29.5 in
18M: 30 to 31.5 in
24M: 32 to 33.5 in
2T: 32 to 33.5 in
3T: 34 to 37.5 in
4T: 38 to 41.5 in

Gerber Childrenswear size to Wonder Nation size

Gerber Childrenswear	Closest Wonder Nation	Match	Weight: Gerber Childrenswear / Wonder Nation	Height: Gerber Childrenswear / Wonder Nation
Preemie	Preemie	Close match	up to 5.1 lb / up to 5 lb	up to 17 in / up to 17 in
Newborn	Newborn	Close match	5.1 to 7.9 lb / 5.5 to 7.5 lb	17 to 21 in / 17.5 to 21 in
0-3M	0-3M	Close match	7.9 to 11.9 lb / 6.5 to 12 lb	21 to 24 in / 20.5 to 23 in
0-6M	3-6M	Close match	up to 16.1 lb / 12.5 to 16 lb	17 to 26 in / 23.5 to 26 in
3-6M	3-6M	Close match	11.9 to 16.1 lb / 12.5 to 16 lb	24 to 26 in / 23.5 to 26 in
6-9M	6-9M	Partial	16.1 to 20.1 lb / 16.5 to 19 lb	26 to 28 in / 26.5 to 27.5 in
12M	12M	Partial	20.1 to 24 lb / 19.5 to 22 lb	28 to 30 in / 28 to 29.5 in
18M	18M	Partial	24 to 28 lb / 22.5 to 26 lb	30 to 32 in / 30 to 31.5 in
24M/2T	24M	Partial	28 to 32 lb / 26.5 to 30 lb	32 to 34 in / 32 to 33.5 in
3T	3T	Close match	32 to 35.1 lb / 30.5 to 34 lb	34 to 38 in / 34 to 37.5 in
4T	4T	Close match	35.1 to 39 lb / 34.5 to 38 lb	38 to 40 in / 38 to 41.5 in

Wonder Nation size to Gerber Childrenswear size

Wonder Nation	Closest Gerber Childrenswear	Match	Weight: Wonder Nation / Gerber Childrenswear	Height: Wonder Nation / Gerber Childrenswear
Preemie	Preemie	Close match	up to 5 lb / up to 5.1 lb	up to 17 in / up to 17 in
Newborn	Newborn	Close match	5.5 to 7.5 lb / 5.1 to 7.9 lb	17.5 to 21 in / 17 to 21 in
0-3M	0-3M	Close match	6.5 to 12 lb / 7.9 to 11.9 lb	20.5 to 23 in / 21 to 24 in
3-6M	3-6M	Close match	12.5 to 16 lb / 11.9 to 16.1 lb	23.5 to 26 in / 24 to 26 in
6-9M	6-9M	Partial	16.5 to 19 lb / 16.1 to 20.1 lb	26.5 to 27.5 in / 26 to 28 in
12M	12M	Partial	19.5 to 22 lb / 20.1 to 24 lb	28 to 29.5 in / 28 to 30 in
18M	18M	Partial	22.5 to 26 lb / 24 to 28 lb	30 to 31.5 in / 30 to 32 in
24M	24M/2T	Partial	26.5 to 30 lb / 28 to 32 lb	32 to 33.5 in / 32 to 34 in
2T	24M/2T	Partial	26.5 to 30 lb / 28 to 32 lb	32 to 33.5 in / 32 to 34 in
3T	3T	Close match	30.5 to 34 lb / 32 to 35.1 lb	34 to 37.5 in / 34 to 38 in
4T	4T	Close match	34.5 to 38 lb / 35.1 to 39 lb	38 to 41.5 in / 38 to 40 in

Try it

Compare any size

I know the size in

Size

What is that in

Every Gerber Childrenswear size in Wonder Nation

Close match

Gerber Childrenswear Preemie lines up closely with Wonder Nation Preemie.

Weight (lb)

Gerber Childrenswear Preemie up to 5.1 lb

Wonder Nation Preemie up to 5 lb

Height (in)

Gerber Childrenswear Preemie up to 17 in

Wonder Nation Preemie up to 17 in

The shaded column is the Gerber Childrenswear range. Bars show what each brand publishes for the size.

Based on published size charts. Gerber Childrenswear chart and Wonder Nation chart.

More comparisons

Charts retrieved October 4, 2026 (Gerber Childrenswear) and October 4, 2026 (Wonder Nation). Sources are listed on each brand page. This site is not affiliated with either brand.