Size charts / New Balance to ASICS size conversion

New Balance to ASICS size conversion

New Balance and ASICS sizes side by side for the same US size, men's and women's. The EU and UK labels come from each brand's own size chart. They compare size labels and do not assess product fit.

Size charts: New Balance · ASICS

Men's

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New Balance and ASICS men's sizes by US size
US	New Balance EU	ASICS EU	New Balance UK	ASICS UK
3.5	35 1/2	35 1/2	3	2.5
4	36	36	3.5	3
4.5	37	37	4	3.5
5	37 1/2	37 1/2	4.5	4
5.5	38	38	5	4.5
6	38 1/2	39	5.5	5
6.5	39 1/2	39 1/2	6	5.5
7	40	40	6.5	6
7.5	40 1/2	40 1/2	7	6.5
8	41 1/2	41 1/2	7.5	7
8.5	42	42	8	7.5
9	42 1/2	42 1/2	8.5	8
9.5	43	43 1/2	9	8.5
10	44	44	9.5	9
10.5	44 1/2	44 1/2	10	9.5
11	45	45	10.5	10
11.5	45 1/2	46	11	10.5
12	46 1/2	46 1/2	11.5	11
12.5	47	47	12	11.5
13	47 1/2	48	12.5	12
13.5	48 1/2	48 1/2	13	12.5
14	49	49	13.5	13
15	50	50 1/2	14.5	14

Women's

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New Balance and ASICS women's sizes by US size
US	New Balance EU	ASICS EU	New Balance UK	ASICS UK
4	34	34 1/2	2	2
4.5	34 1/2	35	2.5	2.5
5	35	35 1/2	3	3
5.5	36	36	3.5	3.5
6	36 1/2	37	4	4
6.5	37	37 1/2	4.5	4.5
7	37 1/2	38	5	5
7.5	38	39	5.5	5.5
8	39	39 1/2	6	6
8.5	40	40	6.5	6.5
9	40 1/2	40 1/2	7	7
9.5	41	41 1/2	7.5	7.5
10	41 1/2	42	8	8
10.5	42 1/2	42 1/2	8.5	8.5
11	43	43 1/2	9	9
11.5	43 1/2	44	9.5	9.5
12	44	44 1/2	10	10
12.5	45	45	10.5	10.5
13	45 1/2	46	11	11

Questions

Is a New Balance EU size the same as a ASICS EU size?: Not always. For 5 of 23 shared US men's sizes, the EU label differs. For example, US 9.5 is EU 43 at New Balance and EU 43 1/2 at ASICS.
What is a New Balance US 9.5 in ASICS?: At ASICS, US 9.5 men's is EU 43 1/2 and UK 8.5. At New Balance, it is EU 43 and UK 9.
Which sizes does the table cover?: Men's: US 3.5 to US 15 (23 sizes). Women's: US 4 to US 13 (19 sizes). The table shows only the US sizes that both charts list.
Does this table tell me how a shoe fits?: No. It compares the size labels of the New Balance and ASICS charts. Fit depends on the model; check the maker's guide for the model you want.