This article provides children’s clothing size conversions between U.S., U.K., Japan and European sizes.

Clothing sizes in the United States are different than those found in most other countries. If you are a visitor from another country shopping for clothes in the U.S., it might be useful to know the differences in U.S. sizes. This page is designed to be a useful tool in converting local sizes to approximate U.S. sizes. We try to keep the data as accurate as possible, but we cannot guarantee that it is absolutely correct. Sizes of clothing vary between manufacturers and even between different designs by the same manufacturer. You should use these charts for approximation only.

Newborn Babies and Infant Sizes

Some stores also offer “Preemie” sizes for babies under 4 pounds.

U.S. Size	Newborn	3 Months	6 Months	9 Months	12 Months	18 Months	24 Months
Weight lbs.	4 – 8	9 – 11	12 – 15	16 – 18	19 – 20	21 – 23	24 – 28
Length ins.	17 – 19	19 – 23	24 – 26	27 – 28	29 – 30	31 – 32	33 – 35
Weight kgs.	2 – 3.5	4 – 5	5.5 – 7	7 – 8	8.5 – 9	9.5 – 10.5	11 – 12.5
Length cms.	43 – 48	48 – 58	60 – 66	68 – 71	73 – 76	78 – 81	83 – 89

Toddlers and Kids Sizes

Typically for children from 2 to 6 years old.

U.S. Size	2T	3T	4T	4	5	6	6X
Weight lbs.	24 – 28	29 – 32	33 – 36	37 – 41	42 – 46	47 – 53	54 – 58
Length ins.	33 – 35	36 – 38	39 – 41	42 – 44	45 – 47	48 – 49	50 – 51
Weight kgs.	11 – 13	13 – 15	15 – 17	17 – 19	19- 21	21 -24	24 – 26
Length cms.	84 – 89	91 – 97	99 – 104	107 – 112	114 – 119	122 – 125	127 – 130

U.S. Standard Girl’s Sizes

Typically 7 to 14 years old.

US Size	7	8	10	12	14	16
Height ins.	51 – 52	53 – 54	55 – 57	58 – 59	60 – 62	63 – 64
Bust ins.	26.5	27.5	29	30.5	32	33.5
Waist ins.	23	23.5	24.5	25.5	26.5	27.5
Hips ins.	28	29	30.5	32.5	34.5	36.5
Height cms.	129 – 132	134 – 137	139 – 145	147 – 150	152 – 157	160 – 163
Bust cms.	67	70	74	77	81	85
Waist cms.	58	60	62	65	67	70
Hips cms.	71	74	77	82	87	93

U.S. Standard Boys Sizes

Typically 7 to 14 years old. (Sometimes available in slim or husky.)

U.S. Size	8	10	12	14	16	18
Height ins.	50 – 53	54 – 57	58 – 60	61 – 63	64 – 65	65 – 66
Chest ins.	27	28.5	30	32	33.5	35
Waist ins.	23.5	25	26	27	28	29
Hips ins.	27.5	29.5	31.5	33.5	35.5	37.5
Height cms.	127 – 135	137 – 145	147 – 152	154 – 160	162 – 165	165 – 168
Chest cms.	68	72	76	81	85	89
Waist cms.	59	63.5	66	68	71	74
Hips cms.	70	75	80	85	90	95

Infant and Toddler Shoes

Typically birth to 6 years old.

European	16	17	18	19	20	22	23	24	25	27	28	30
U.K.	0.5	1	2	3	4	5	6	7	8	9	10	11
U.S.	1	2	3	4	5	6	7	8	9	10	11	12

Children’s Shoes

Typically 6 to 12 years old.

European	28	30	31	32	33	34	36	37	38	39
U.K.	10	11	12	13	1	2	3	4	5	6
U.S.	11	12	13	1	2	3	4	5	6	7

Girl’s Shoes

Typically 12 years old to adult.

European	26	27	28	28	29	31	31	32	34	35
U.K.	7.5	8.5	9.5	10	11	12	13	14	1.5	2.5
Japan	15	15	16	16	17	18	19	20	21	22
U.S.	9	10	11	12	13	14	1	2	3	4

Boy’s Shoes