United Kingdom Size 3-AA to US: 5-2A

Cross-market women’s shoe width conversion mapping 3-AA specifications into 5-2A.

From Standard & Size

Converted Equivalent

5-4A

Based on row equivalence: US 5-4A | EU 35-F- | Foot Length 21.9 cm

Standard cross-walk matching active anthropometric row parameters.

United Kingdom Size 3-AA to US: 5-2A Conversion

Analyzing Women’s Shoe Width Equivalence Across Markets

United Kingdom Size 3-AA: Corresponds to a forefoot ball width of 7.6 $\text{cm}$ (3 $\text{in}$ ), ball width range of 7.4–7.8 $\text{cm}$ (2.9–3.1 $\text{in}$ ), reference foot length of 21.9 $\text{cm}$ (8.6 $\text{in}$ ), and fit classification Extra Narrow (5-4A / Slim).

US: 5-2A: 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).