Kids’ Swimwear Reference Matrix

Children’s Swimwear Sizing & Measurement Matrix

Comprehensive reference matrix mapping infant, toddler, and youth swimsuits, rash guards, swim trunks, board shorts, bikini sets, and wet suits brackets against standard height milestones, chest, bust, waist, and hip body dimensions.

Children’s Swimwear Standard Specifications

Detailed breakdown of standardized sizing brackets, height correlations, and physical chest, bust, waist, and hip dimensions for children’s swimsuits, rash guards, swim trunks, board shorts, bikini sets, and wet suits.

United States	Europe	United Kingdom	Italy	France	Australia	Japan	South Korea	China	Brazil	Mexico	International	Height ( $\text{cm}$ )	Height ( $\text{in}$ )	Chest ( $\text{cm}$ )	Chest ( $\text{in}$ )	Bust ( $\text{cm}$ )	Bust ( $\text{in}$ )	Waist ( $\text{cm}$ )	Waist ( $\text{in}$ )	Hip ( $\text{cm}$ )	Hip ( $\text{in}$ )
2T	92	2Y	92	92	2	90	90	90	2	2	2T	92	36.2	52	20.5	52	20.5	50	19.7	54	21.3
3T	98	3Y	98	98	3	95	95	95	3	3	3T	98	38.6	53	20.9	53	20.9	51	20.1	56	22
4T	104	4Y	104	104	4	100	100	100	4	4	4T	104	40.9	55	21.7	55	21.7	52	20.5	58	22.8
5	110	5Y	110	110	5	110	110	110	5	5	XS	110	43.3	57	22.4	57	22.4	53	20.9	60	23.6
6	116	6Y	116	116	6	115	115	115	6	6	S	116	45.7	60	23.6	60	23.6	55	21.7	63	24.8
7	122	7Y	122	122	7	120	120	120	7	7	S+	122	48	63	24.8	63	24.8	57	22.4	66	26
8	128	8Y	128	128	8	125	125	125	8	8	M	128	50.4	66	26	66	26	59	23.2	69	27.2
10	140	10Y	140	140	10	135	135	135	10	10	L	140	55.1	71	28	71	28	62	24.4	74	29.1
12	152	12Y	152	152	12	145	145	145	12	12	XL	152	59.8	76	29.9	76	29.9	65	25.6	79	31.1
14	158	14Y	158	158	14	150	150	150	14	14	XXL	158	62.2	80	31.5	80	31.5	68	26.8	84	33.1
16	164	16Y	164	164	16	160	160	160	16	16	XXXL	164	64.6	84	33.1	84	33.1	72	28.3	89	35

* Sizing can vary significantly between international brands and regional manufacturers. Use this matrix as a baseline reference for standard proportional conversions.

Interpreting Children’s Swimsuits, Rash Guards, Swim Trunks, Board Shorts, Bikini Sets, and Wet Suits Dimensions

Standardizing children’s swimsuits, rash guards, swim trunks, board shorts, bikini sets, and wet suits requires correlating chronological developmental stages with direct anthropometric metrics. Because young frames grow along distinct trajectories, swimwear sizing transitions through primary divisions across international markets.

When utilizing this matrix for swimsuit selection or size conversion, reference the base height factor ( $\text{H}$ ) alongside chest, bust, waist, and hip specifications to account for regional manufacturing variations across global markets.

Indexed Sizing Tiers & Dimensions

2TSize

Height: 92 cm, Chest: 52 cm, Waist: 50 cm / Proportional bracket mapping for US size 2T

Symbol: 2TBase Value: 92

3TSize

Height: 98 cm, Chest: 53 cm, Waist: 51 cm / Proportional bracket mapping for US size 3T

Symbol: 3TBase Value: 98

4TSize

Height: 104 cm, Chest: 55 cm, Waist: 52 cm / Proportional bracket mapping for US size 4T

Symbol: 4TBase Value: 104

5Size

Height: 110 cm, Chest: 57 cm, Waist: 53 cm / Proportional bracket mapping for US size 5

Symbol: 5Base Value: 110

6Size

Height: 116 cm, Chest: 60 cm, Waist: 55 cm / Proportional bracket mapping for US size 6

Symbol: 6Base Value: 116

7Size

Height: 122 cm, Chest: 63 cm, Waist: 57 cm / Proportional bracket mapping for US size 7

Symbol: 7Base Value: 122

8Size

Height: 128 cm, Chest: 66 cm, Waist: 59 cm / Proportional bracket mapping for US size 8

Symbol: 8Base Value: 128

10Size

Height: 140 cm, Chest: 71 cm, Waist: 62 cm / Proportional bracket mapping for US size 10

Symbol: 10Base Value: 140

12Size

Height: 152 cm, Chest: 76 cm, Waist: 65 cm / Proportional bracket mapping for US size 12

Symbol: 12Base Value: 152

14Size

Height: 158 cm, Chest: 80 cm, Waist: 68 cm / Proportional bracket mapping for US size 14

Symbol: 14Base Value: 158

16Size

Height: 164 cm, Chest: 84 cm, Waist: 72 cm / Proportional bracket mapping for US size 16

Symbol: 16Base Value: 164