US: 8-D to United Kingdom Size 3-AA

Cross-market women’s shoe width conversion mapping 8-D specifications into 3-AA.

From Standard & Size

Converted Equivalent

6-D

Based on row equivalence: US 8-D | EU 38-G | Foot Length 23.5 cm

Standard cross-walk matching active anthropometric row parameters.

US: 8-D to United Kingdom Size 3-AA Conversion

Analyzing Women’s Shoe Width Equivalence Across Markets

US: 8-D: Corresponds to a forefoot ball width of 9.5 $\text{cm}$ (3.74 $\text{in}$ ), ball width range of 9.3–9.7 $\text{cm}$ (3.66–3.82 $\text{in}$ ), reference foot length of 23.5 $\text{cm}$ (9.25 $\text{in}$ ), and fit classification Wide (8-D).

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).