US 4.5 in EU and UK sizes
A men’s US 4.5 (or 4.5Y) is EU 35.5–36 and UK 3.5; a women’s US 4.5 is EU 33.5–34 and UK 2 by the standard size tables.
The men’s fits a foot of 22.0 to 22.4 cm and the women’s fits a foot of 20.7 to 21.2 cm. A kids’ 4.5C is much smaller: EU 19.5–20.5, for a foot of up to 12.1 cm.
Three shoes called US 4.5
The number alone doesn’t say whose size it is. For the same US 4.5, each is for a different foot:
US 4.5 in every size system
| System | Men’s US 4.5 | Women’s US 4.5 | Kids’ 4.5C |
|---|---|---|---|
| Foot length (cm) | 22.0–22.4 | 20.7–21.2 | 11.6–12.1 |
| Foot length (in) | 8.67–8.83 | 8.17–8.33 | 4.58–4.75 |
| EU | 35.5–36 | 33.5–34 | 19.5–20.5 |
| UK | 3.5 | 2 | 4–4.5 |
| Japan (cm) | 22.5 | 21–21.5 | 12–12.5 |
| Mondopoint (mm) | 225 | 210–215 | 120–125 |
| Australia and NZ | 3.5 | 4.5 | 4–4.5 |
| India (UK sizes) | 3.5 | 2 | 4–4.5 |
| South Korea and China (mm) | 225 | 210–215 | 120–125 |
| Brazil | 34 | 32 | 18–19 |
From the standard size tables; where the foot range spans more than one size, the first and last are shown.
What 12 brands print next to a US 4.5
Each brand’s own chart, on the row for its US 4.5: 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.