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

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

From Standard & Size

Converted Equivalent

7-AA

Based on row equivalence: US 9-4A | EU 39-F- | Foot Length 24 cm

Standard cross-walk matching active anthropometric row parameters.

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

Analyzing Women’s Shoe Width Equivalence Across Markets

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).

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).