Brand vs brand

Gerber Childrenswear vs Primary sizes

Of Gerber Childrenswear's 11 baby and toddler sizes, 3 line up closely with a Primary size, 7 are partial matches, and 1 has no clean match. Both charts list weight and height, so the comparison uses both.

Closest pairs: Gerber Childrenswear 0-6M = Primary 3-6M, Gerber Childrenswear 3T = Primary 3, Gerber Childrenswear 4T = Primary 4.

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

Gerber Childrenswear True to sizePrimary True to size

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

Primary

Newborn: 5.1 to 9 lb
0-3M: 9 to 11.9 lb
3-6M: 11.9 to 15 lb
6-9M: 15 to 18.1 lb
6-12M: 15 to 22 lb
9-12M: 18.1 to 22 lb
12-18M: 22 to 26.9 lb
18-24M: 26.9 to 30 lb
2: 30 to 33.1 lb
3: 33.1 to 35.9 lb
4: 35.9 to 39.9 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

Primary

Newborn: up to 18.1 in
0-3M: 18.1 to 22.8 in
3-6M: 22.8 to 25.2 in
6-9M: 25.2 to 27.2 in
6-12M: 25.2 to 29.1 in
9-12M: 27.2 to 29.1 in
12-18M: 29.1 to 31.1 in
18-24M: 31.1 to 33.1 in
2: 33.1 to 35 in
3: 35 to 38.2 in
4: 38.2 to 40.9 in

Gerber Childrenswear size to Primary size

Gerber Childrenswear	Closest Primary	Match	Weight: Gerber Childrenswear / Primary	Height: Gerber Childrenswear / Primary
Preemie	Newborn	No clean match	up to 5.1 lb / 5.1 to 9 lb	up to 17 in / up to 18.1 in
Newborn	Newborn	Partial	5.1 to 7.9 lb / 5.1 to 9 lb	17 to 21 in / up to 18.1 in
0-3M	0-3M	Partial	7.9 to 11.9 lb / 9 to 11.9 lb	21 to 24 in / 18.1 to 22.8 in
0-6M	3-6M	Close match	up to 16.1 lb / 11.9 to 15 lb	17 to 26 in / 22.8 to 25.2 in
3-6M	3-6M	Partial	11.9 to 16.1 lb / 11.9 to 15 lb	24 to 26 in / 22.8 to 25.2 in
6-9M	6-12M	Partial	16.1 to 20.1 lb / 15 to 22 lb	26 to 28 in / 25.2 to 29.1 in
12M	9-12M	Partial	20.1 to 24 lb / 18.1 to 22 lb	28 to 30 in / 27.2 to 29.1 in
18M	12-18M	Partial	24 to 28 lb / 22 to 26.9 lb	30 to 32 in / 29.1 to 31.1 in
24M/2T	18-24M	Partial	28 to 32 lb / 26.9 to 30 lb	32 to 34 in / 31.1 to 33.1 in
3T	3	Close match	32 to 35.1 lb / 33.1 to 35.9 lb	34 to 38 in / 35 to 38.2 in
4T	4	Close match	35.1 to 39 lb / 35.9 to 39.9 lb	38 to 40 in / 38.2 to 40.9 in

Primary size to Gerber Childrenswear size

Primary	Closest Gerber Childrenswear	Match	Weight: Primary / Gerber Childrenswear	Height: Primary / Gerber Childrenswear
Newborn	Newborn	Partial	5.1 to 9 lb / 5.1 to 7.9 lb	up to 18.1 in / 17 to 21 in
0-3M	0-3M	Partial	9 to 11.9 lb / 7.9 to 11.9 lb	18.1 to 22.8 in / 21 to 24 in
3-6M	0-6M	Close match	11.9 to 15 lb / up to 16.1 lb	22.8 to 25.2 in / 17 to 26 in
6-9M	6-9M	Partial	15 to 18.1 lb / 16.1 to 20.1 lb	25.2 to 27.2 in / 26 to 28 in
6-12M	6-9M	Partial	15 to 22 lb / 16.1 to 20.1 lb	25.2 to 29.1 in / 26 to 28 in
9-12M	12M	Partial	18.1 to 22 lb / 20.1 to 24 lb	27.2 to 29.1 in / 28 to 30 in
12-18M	18M	Partial	22 to 26.9 lb / 24 to 28 lb	29.1 to 31.1 in / 30 to 32 in
18-24M	24M/2T	Partial	26.9 to 30 lb / 28 to 32 lb	31.1 to 33.1 in / 32 to 34 in
2	24M/2T	Partial	30 to 33.1 lb / 28 to 32 lb	33.1 to 35 in / 32 to 34 in
3	3T	Close match	33.1 to 35.9 lb / 32 to 35.1 lb	35 to 38.2 in / 34 to 38 in
4	4T	Close match	35.9 to 39.9 lb / 35.1 to 39 lb	38.2 to 40.9 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 Primary

Close match

Gerber Childrenswear 0-6M lines up closely with Primary 3-6M.

Weight (lb)

Gerber Childrenswear 0-6M up to 16.1 lb

Primary 0-3M 9 to 11.9 lb

Primary 3-6M 11.9 to 15 lb

Primary 6-9M 15 to 18.1 lb

Height (in)

Gerber Childrenswear 0-6M 17 to 26 in

Primary 0-3M 18.1 to 22.8 in

Primary 3-6M 22.8 to 25.2 in

Primary 6-9M 25.2 to 27.2 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 Primary chart.

More comparisons

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