CM 21.5 in UK, US Men, US Women, EU, CM — shoe size conversion

CM 21.5 is approximately UK 2.5, US Men 3.5, US Women 5, EU 32, CM 21.5 (foot length about 215 mm). UK sizing is shown in local context, but brand fit still matters before buying.

Conversion table

CM 21.5 plus the two half-size steps above and below — formula baseline
Foot length (mm) UKUS MenUS WomenEUCM
207 1.52.543120.5
211 234.53221
215 2.53.553221.5
219 345.53322
223 3.54.563322.5

Conversions run through foot length in millimetres. 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 the brand guides for a purchase-ready answer with confidence scores and sources.

All brand size guides

Related conversions