US: 9-B to United Kingdom Size 3-A

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

From Standard & Size

Converted Equivalent

7-C

Based on row equivalence: US 9-B | EU 39-F | Foot Length 24 cm

Standard cross-walk matching active anthropometric row parameters.

US: 9-B to United Kingdom Size 3-A Conversion

Analyzing Women’s Shoe Width Equivalence Across Markets

US: 9-B: Corresponds to a forefoot ball width of 9.2 $\text{cm}$ (3.62 $\text{in}$ ), ball width range of 9–9.4 $\text{cm}$ (3.55–3.7 $\text{in}$ ), reference foot length of 24 $\text{cm}$ (9.45 $\text{in}$ ), and fit classification Standard Width (9-B).

United Kingdom Size 3-A: Corresponds to a forefoot ball width of 7.9 $\text{cm}$ (3.1 $\text{in}$ ), ball width range of 7.7–8.1 $\text{cm}$ (3.05–3.2 $\text{in}$ ), reference foot length of 21.9 $\text{cm}$ (8.6 $\text{in}$ ), and fit classification Narrow (5-2A / A).