United Kingdom Size 3-C to US: 9-4A

Cross-market women’s shoe width conversion mapping 3-C specifications into 9-4A.

From Standard & Size

Converted Equivalent

5-B

Based on row equivalence: US 5-B | EU 35-F | Foot Length 21.9 cm

Standard cross-walk matching active anthropometric row parameters.

United Kingdom Size 3-C to US: 9-4A Conversion

Analyzing Women’s Shoe Width Equivalence Across Markets

United Kingdom Size 3-C: Corresponds to a forefoot ball width of 8.2 $\text{cm}$ (3.2 $\text{in}$ ), ball width range of 8–8.4 $\text{cm}$ (3.15–3.3 $\text{in}$ ), reference foot length of 21.9 $\text{cm}$ (8.6 $\text{in}$ ), and fit classification Standard Width (5-B).

US: 9-4A: Corresponds to a forefoot ball width of 8.5 $\text{cm}$ (3.35 $\text{in}$ ), ball width range of 8.3–8.7 $\text{cm}$ (3.25–3.45 $\text{in}$ ), reference foot length of 24 $\text{cm}$ (9.45 $\text{in}$ ), and fit classification Extra Narrow (9-4A / Slim).