US 3.5 in EU and UK sizes
A men’s US 3.5 (or 3.5Y) is EU 34–34.5 and UK 2.5; a women’s US 3.5 is EU 32–32.5 and UK 1 by the standard size tables.
The men’s fits a foot of 21.2 to 21.6 cm and the women’s fits a foot of 19.9 to 20.3 cm. A kids’ 3.5C is much smaller: EU 18.5–19, for a foot of up to 11.2 cm.
Three shoes called US 3.5
The number alone doesn’t say whose size it is. For the same US 3.5, each is for a different foot:
US 3.5 in every size system
| System | Men’s US 3.5 | Women’s US 3.5 | Kids’ 3.5C |
|---|---|---|---|
| Foot length (cm) | 21.2–21.6 | 19.9–20.3 | 10.8–11.2 |
| Foot length (in) | 8.33–8.50 | 7.83–8.00 | 4.25–4.42 |
| EU | 34–34.5 | 32–32.5 | 18.5–19 |
| UK | 2.5 | 1 | 3–3.5 |
| Japan (cm) | 21.5–22 | 20–20.5 | 11–11.5 |
| Mondopoint (mm) | 215–220 | 200–205 | 110–115 |
| Australia and NZ | 2.5 | 3.5 | 3–3.5 |
| India (UK sizes) | 2.5 | 1 | 3–3.5 |
| South Korea and China (mm) | 215–220 | 200–205 | 110–115 |
| Brazil | 32–33 | 30–31 | 17 |
From the standard size tables; where the foot range spans more than one size, the first and last are shown.
What 8 brands print next to a US 3.5
Each brand’s own chart, on the row for its US 3.5: brands differ by half a size or more in UK and EU.
As printed on each brand’s chart, linked; “—” where the chart has no such size or column. Not affiliated with any brand.
Convert another size
Size tables checked 2026-10-23; brand sizes from each brand’s own charts, linked above. An estimate to help you choose: fit varies by brand and model.