The International Size Reference Guide

Boys' Swimwear Size Chart

Here you find general sizes for Boys Swimwear. This size chart can be used with:

Swim Trunks
Swim Shorts
UV/Swim Suits
Wetsuits

How to Measure Boys' Swimwear Size

Measure Waist: Measure circumference around the natural waistline, just above the belly button (approx. 1 inch/2.5 cm). Make sure to keep the measuring tape parallel with the floor.
Measure Chest: Circumference around body over the chest (just over nipples).
Height: Body height.

Use your measurements to determine boys' swimwear size with our Boys' Swimwear Size Charts below.

US/UK Swimwear Size Chart:

All measurements in inches. US/UK Sizes, Yrs and Chest Inches. (Alpha size in parenthesis.)

Size	Height Inches	Chest Inches	Waist Inches
1Y	34	21	20.5
2Y	36	22	21
3Y	39	23	21.5
4Y	41	23.5	22
5Y	43	24.5	22.5
6Y (XS)	46	25.5	23
7Y (XS)	48	26	23.5
8Y (S)	50	27	23.5
9Y (S)	53	27.5	24
10Y (M)	55	28	25
11Y (M)	57	29	26
12Y (L)	60	30	27
13Y (L)	62	30.5	27.5
14Y (XL)	65	31.5	28.5

Intl Swimwear Size Chart:

All measurements in CM. EU Size. (Alpha size and US/UK swimwear size in parenthesis.)

Size YRS	Size EU	Height CM	Chest CM	Waist CM
1	86	86	53	52
2	92	92	56	54
3	98	98	58	55
4	104	104	60	56
5	110	110	62	57
6 (XS)	116	116	64	58
7 (XS)	122	122	66	59
8 (S)	128	128	68	60
9 (S)	134	134	70	62
10 (M)	140	140	72	64
11 (M)	146	146	74	66
12 (L)	152	152	76	68
13 (L)	158	158	78	70
14 (XL)	164	164	80	72

Tips, Tricks or Questions?

Tips, tricks or questions about boys' swimwear? Please post it below. Thanks!