Brand vs brand

babyGap vs Nike sizes

Of babyGap's 9 baby and toddler sizes, 2 line up closely with a Nike size, 6 are partial matches, and 1 has no clean match. Both charts list weight and height, so the comparison uses both.

Closest pairs: babyGap 6-12M = Nike 9M, babyGap 12-18M = Nike 12M.

Watch the labels: babyGap 2Y is closer to Nike 3T than to Nike's own 2Y.

babyGap True to sizeNike Runs large

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)

babyGap

Up to 7 lb: up to 6.6 lb
0-3M: 6.6 to 11 lb
3-6M: 11 to 17.6 lb
6-12M: 17.6 to 22 lb
12-18M: 22 to 26.5 lb
18-24M: 26.5 to 30.9 lb
2Y: 30.9 to 33.1 lb
3Y: 33.1 to 35.3 lb
4Y: 35.3 to 39.7 lb

Nike

Newborn/0-3M: 6 to 9.5 lb
3M: 9.9 to 14.6 lb
6M: 15 to 17.9 lb
9M: 18.3 to 22 lb
12M: 22.5 to 24.9 lb
18M: 25.6 to 28 lb
24M: 28.4 to 30 lb
2T: 28.4 to 30 lb
3T: 30.4 to 33.1 lb
4T: 34 to 37.9 lb

Height (in)

babyGap

Up to 7 lb: up to 18.1 in
0-3M: 18.1 to 22.8 in
3-6M: 22.8 to 27.2 in
6-12M: 27.2 to 29.1 in
12-18M: 29.1 to 31.1 in
18-24M: 31.1 to 33.1 in
2Y: 33.1 to 35.8 in
3Y: 35.8 to 39 in
4Y: 39 to 42.1 in

Nike

Newborn/0-3M: 19.7 to 22 in
3M: 22 to 24.4 in
6M: 24.4 to 26.8 in
9M: 26.8 to 29.1 in
12M: 29.1 to 31.5 in
18M: 31.5 to 33.9 in
24M: 33.9 to 36.2 in
2T: 33.9 to 36.2 in
3T: 36.2 to 38.6 in
4T: 38.6 to 40.9 in

babyGap size to Nike size

babyGap	Closest Nike	Match	Weight: babyGap / Nike	Height: babyGap / Nike
Up to 7 lb	Newborn/0-3M	No clean match	up to 6.6 lb / 6 to 9.5 lb	up to 18.1 in / 19.7 to 22 in
0-3M	Newborn/0-3M	Partial	6.6 to 11 lb / 6 to 9.5 lb	18.1 to 22.8 in / 19.7 to 22 in
3-6M	6M	Partial	11 to 17.6 lb / 15 to 17.9 lb	22.8 to 27.2 in / 24.4 to 26.8 in
6-12M	9M	Close match	17.6 to 22 lb / 18.3 to 22 lb	27.2 to 29.1 in / 26.8 to 29.1 in
12-18M	12M	Close match	22 to 26.5 lb / 22.5 to 24.9 lb	29.1 to 31.1 in / 29.1 to 31.5 in
18-24M	18M	Partial	26.5 to 30.9 lb / 25.6 to 28 lb	31.1 to 33.1 in / 31.5 to 33.9 in
2Y	3T	Partial	30.9 to 33.1 lb / 30.4 to 33.1 lb	33.1 to 35.8 in / 36.2 to 38.6 in
3Y	3T	Partial	33.1 to 35.3 lb / 30.4 to 33.1 lb	35.8 to 39 in / 36.2 to 38.6 in
4Y	4T	Partial	35.3 to 39.7 lb / 34 to 37.9 lb	39 to 42.1 in / 38.6 to 40.9 in

Nike size to babyGap size

Nike	Closest babyGap	Match	Weight: Nike / babyGap	Height: Nike / babyGap
Newborn/0-3M	0-3M	Partial	6 to 9.5 lb / 6.6 to 11 lb	19.7 to 22 in / 18.1 to 22.8 in
3M	3-6M	Partial	9.9 to 14.6 lb / 11 to 17.6 lb	22 to 24.4 in / 22.8 to 27.2 in
6M	3-6M	Partial	15 to 17.9 lb / 11 to 17.6 lb	24.4 to 26.8 in / 22.8 to 27.2 in
9M	6-12M	Close match	18.3 to 22 lb / 17.6 to 22 lb	26.8 to 29.1 in / 27.2 to 29.1 in
12M	12-18M	Close match	22.5 to 24.9 lb / 22 to 26.5 lb	29.1 to 31.5 in / 29.1 to 31.1 in
18M	18-24M	Partial	25.6 to 28 lb / 26.5 to 30.9 lb	31.5 to 33.9 in / 31.1 to 33.1 in
24M	2Y	Partial	28.4 to 30 lb / 30.9 to 33.1 lb	33.9 to 36.2 in / 33.1 to 35.8 in
2T	2Y	Partial	28.4 to 30 lb / 30.9 to 33.1 lb	33.9 to 36.2 in / 33.1 to 35.8 in
3T	2Y	Partial	30.4 to 33.1 lb / 30.9 to 33.1 lb	36.2 to 38.6 in / 33.1 to 35.8 in
4T	4Y	Partial	34 to 37.9 lb / 35.3 to 39.7 lb	38.6 to 40.9 in / 39 to 42.1 in

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Every babyGap size in Nike

Close match

babyGap 6-12M lines up closely with Nike 9M.

Weight (lb)

babyGap 6-12M 17.6 to 22 lb

Nike 6M 15 to 17.9 lb

Nike 9M 18.3 to 22 lb

Height (in)

babyGap 6-12M 27.2 to 29.1 in

Nike 6M 24.4 to 26.8 in

Nike 9M 26.8 to 29.1 in

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

Based on published size charts. babyGap chart and Nike chart.

More comparisons

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