US: 9-B to United Kingdom Size 5-AA

Cross-market women’s shoe width conversion mapping 9-B specifications into 5-AA.

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 5-AA 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 5-AA: Corresponds to a forefoot ball width of 8 $\text{cm}$ (3.15 $\text{in}$ ), ball width range of 7.8–8.2 $\text{cm}$ (3.05–3.25 $\text{in}$ ), reference foot length of 23 $\text{cm}$ (9.05 $\text{in}$ ), and fit classification Extra Narrow (7-4A / Slim).