Nike Men's Footwear Size Chart

US - Men's	US - Women's	UK	EU	Foot Length (cm)
3.5	5	3	35.5	21.6
4	5.5	3.5	36	22
4.5	6	4	36.5	22.4
5	6.5	4.5	37.5	22.9
5.5	7	5	38	23.3
6	7.5	5.5	38.5	23.7
6.5	8	6	39	24.1
7	8.5	6	40	24.5
7.5	9	6.5	40.5	25
8	9.5	7	41	25.4
8.5	10	7.5	42	25.8
9	10.5	8	42.5	26.2
9.5	11	8.5	43	26.7
10	11.5	9	44	27.1
10.5	12	9.5	44.5	27.5
11	12.5	10	45	27.9
11.5	13	10.5	45.5	28.3
12	13.5	11	46	28.8
12.5	14	11.5	47	29.2
13	14.5	12	47.5	29.6
13.5	15	12.5	48	30
14	15.5	13	48.5	30.5
14.5	16	13.5	49	30.9
15	16.5	14	49.5	31.3
15.5	17	14.5	50	31.7
16	17.5	15	50.5	32.2
16.5	18	15.5	51	32.6
17	18.5	16	51.5	33
17.5	19	16.5	52	33.4
18	19.5	17	52.5	33.9
18.5	20	17.5	53	34.3
19	20.5	18	53.5	34.7
19.5	21	18.5	54	35.1
20	21.5	19	54.5	35.5
20.5	22	19.5	55	36
21	22.5	20	55.5	36.4
21.5	23	20.5	56	36.8
22	23.5	21	56.5	37.2

Nike women's Footwear Size Chart

US - Women's	US - Men's	UK	EU	Foot Length (cm)
3.5	2	1.5	33.5	20.8
4	2.5	1.5	34.5	21.2
4.5	3	2	35	21.6
5	3.5	2.5	35.5	22
5.5	4	3	36	22.4
6	4.5	3.5	36.5	22.9
6.5	5	4	37.5	23.3
7	5.5	4.5	38	23.7
7.5	6	5	38.5	24.1
8	6.5	5.5	39	24.5
8.5	7	6	40	25
9	7.5	6.5	40.5	25.4
9.5	8	7	41	25.8
10	8.5	7.5	42	26.2
10.5	9	8	42.5	26.7
11	9.5	8.5	43	27.1
11.5	10	9	44	27.5
12	10.5	9.5	44.5	27.9
12.5	11	10	45	28.3
13	11.5	10.5	45.5	28.8
13.5	12	11	46	29.2
14	12.5	11.5	47	29.6
14.5	13	12	47.5	30
15	13.5	12.5	48	30.5
15.5	14	13	48.5	30.9
16	14.5	13.5	49	31.3
16.5	15	14	50	31.7
17	15.5	14.5	50.5	32.2
17.5	16	15	51
18	16.5	15.5	51.5
18.5	17	16	52
19	17.5	16.5	52.5
19.5	18	17	53
20	18.5	17.5	53.5
20.5	19	18	54
21	19.5	18.5	54.5
21.5	20	19	55
22	20.5	19.5	55.5
22.5	21	20	56

Nike Unisex Footwear Size Chart

US - Men's	US - Women's	UK	EU	Foot Length (cm)
3.5	5	3	35.5	21.6
4	5.5	3.5	36	22
4.5	6	4	36.5	22.4
5	6.5	4.5	37.5	22.9
5.5	7	5	38	23.3
6	7.5	5.5	38.5	23.7
6.5	8	6	39	24.1
7	8.5	6	40	24.5
7.5	9	6.5	40.5	25
8	9.5	7	41	25.4
8.5	10	7.5	42	25.8
9	10.5	8	42.5	26.2
9.5	11	8.5	43	26.7
10	11.5	9	44	27.1
10.5	12	9.5	44.5	27.5
11	12.5	10	45	27.9
11.5	13	10.5	45.5	28.3
12	13.5	11	46	28.8
12.5	14	11.5	47	29.2
13	14.5	12	47.5	29.6
13.5	15	12.5	48	30
14	15.5	13	48.5	30.5
14.5	16	13.5	49	30.9
15	16.5	14	49.5	31.3
15.5	17	14.5	50	31.7
16	17.5	15	50.5	32.2
16.5	18	15.5	51	32.6
17	18.5	16	51.5	33
17.5	19	16.5	52	33.4
18	19.5	17	52.5	33.9
18.5	20	17.5	53	34.3
19	20.5	18	53.5	34.7
19.5	21	18.5	54	35.1
20	21.5	19	54.5	35.5
20.5	22	19.5	55	36
21	22.5	20	55.5	36.4
21.5	23	20.5	56	36.8
22	23.5	21	56.5	37.2

New Balance Men's Size & Conversion

US Men	US Women	UK	EU	Length (cm)
4	5.5	3.5	36	22
4.5	6	4	37	22.5
5	6.5	4.5	37.5	23
5.5	7	5	38	23.5
6	7.5	5.5	38.5	24
6.5	8	6	39.5	24.5
7	8.5	6.5	40	25
7.5	9	7	40.5	25.5
8	9.5	7.5	41.5	26
8.5	10	8	42	26.5
9	10.5	8.5	42.5	27
9.5	11	9	43	27.5
10	11.5	9.5	44	28
10.5	12	10	44.5	28.5
11	12.5	10.5	45	29
11.5	13	11	45.5	29.5
12	13.5	11.5	46.5	30
12.5	14	12	47	30.5
13	15	12.5	47.5	31
14	-	13.5	49	32
15	-	14.5	50	33
16	-	15.5	51	34
17	-	16.5	52	35
18	-	17.5	53	36
19	-	18.5	54	37
20	-	19.5	55	38

New Balance Women's Size & Conversion

US Women	US Men	UK	EU	Length (cm)
4	2.5	2	34	21
4.5	3	2.5	34.5	21.5
5	3.5	3	35	22
5.5	4	3.5	36	22.5
6	4.5	4	36.5	23
6.5	5	4.5	37	23.5
7	5.5	5	37.5	24
7.5	6	5.5	38	24.5
8	6.5	6	39	25
8.5	7	6.5	40	25.5
9	7.5	7	40.5	26
9.5	8	7.5	41	26.5
10	8.5	8	41.5	27
10.5	9	8.5	42.5	27.5
11	9.5	9	43	28
11.5	10	9.5	43.5	28.5
12	10.5	10	44	29
12.5	11	10.5	45	29.5
13	11.5	11	45.5	30
13.5	12	11.5	46	30.5
14	12.5	12	46.5	31
15	13	13	48	32

How To Measure Foot Length