CM 21.5 in EU, UK & CM — Shoe Size Conversion
A CM 21.5 equals approximately US men's 3.5, US women's 5, and EU 32 (foot length ~215 mm). Sizes vary by brand — use the comparison table below as a fit-data starting point.
Conversion table
| US Men | US Women | EU | UK | CM | Foot (mm) |
|---|---|---|---|---|---|
| 2.5 | 4 | 31 | 1.5 | 20.5 | 207 |
| 3 | 4.5 | 32 | 2 | 21 | 211 |
| 3.5 | 5 | 32 | 2.5 | 21.5 | 215 |
| 4 | 5.5 | 33 | 3 | 22 | 219 |
| 4.5 | 6 | 33 | 3.5 | 22.5 | 223 |
Conversions route through foot length (mm). See how we calculate for the full methodology.
Find your brand fit
No brand-specific fit data is anchored at this exact foot length yet. Browse our brand guides — Nike runs small, New Balance runs large — for a purchase-ready answer with confidence scores and sources.