Size Chart

Nike and New Balance Size Chart

US Men's	US Women's	US Youth	UK	EU	Footlength (cm)
3.5M	4W	3.5Y	3	35.5	22.5
4M	5.5W	4Y	3.5	36	23
4.5M	6W	4.5Y	4	36.5	23.5
5M	6.5W	5Y	4.5	37.5	23.5
5.5M	7W	5.5Y	5	38	24
6M	7.5W	6Y	5.5	38.5	24
6.5M	8W	6.5Y	6	39	24.5
7M	8.5W	7Y	6	40	25
7.5M	9W	7.5Y	6.5	40.5	25.5
8M	9.5W	-	7	41	26
8.5M	10W	-	7.5	42	26.5
9M	10.5W	-	8	42.5	27
9.5M	11W	-	8.5	43	27.5
10M	11.5W	-	9	44	28
10.5M	12W	-	9.5	44.5	28.5
11M	12.5W	-	10	45	29
11.5M	13W	-	10.5	45.5	29.5
12M	13.5W	-	11	46	30
12.5M	14W	-	11.5	47	30.5
13M	-	-	12	47.5	31
14M	-	-	13	48.5	32

The size chart above is from Nike. Please refer to the size charts on the Nike and New Balance websites for sizes not listed here. Please note that New Balance EU sizes and length differ slightly but have a similar fit.

 

Adidas/Yeezy size chart

US Mens	US Womens	US Youth	UK	EU	Footlength (cm)
3.5M	4.5W	3.5Y	3	35.4	21.7
4M	5W	4Y	3.5	36	22.1
4.5M	5.5W	4.5Y	4	36.7	22.5
5M	6W	5Y	4.5	37.4	22.9
5.5M	6.5W	5.5Y	5	38	23.3
6M	7W	6Y	5.5	38.6	23.8
6.5M	7.5W	6.5Y	6	39.4	24.2
7M	8W	7Y	6.5	40	24.6
7.5M	8.5W	7.5Y	7	40.6	25.0
8M	9W	-	7.5	41.4	25.5
8.5M	9.5W	-	8	42	25.9
9M	10W	-	8.5	42.6	26.3
9.5M	10.5W	-	9	43.4	26.7
10M	11W	-	9.5	44	27.1
10.5M	11.5W	-	10	44.6	27.6
11M	12W	-	10.5	45.4	28.0
11.5M	12.5W	-	11	46	28.4
12M	13W	-	11.5	46.6	28.8
12.5M	13.5W	-	12	47.4	29.3
13M	14W	-	12.5	48	29.7
14M	-	-	13.5	48.4	30.5

The size chart above is from Adidas. Please refer to the size charts on the Adidas website for sizes not listed here.