US: 6-D to United Kingdom Size 3-A

Cross-market women’s shoe width conversion mapping 6-D specifications into 3-A.

From Standard & Size

Converted Equivalent

4-D

Based on row equivalence: US 6-D | EU 36-G | Foot Length 22.5 cm

Standard cross-walk matching active anthropometric row parameters.

US: 6-D to United Kingdom Size 3-A Conversion

Analyzing Women’s Shoe Width Equivalence Across Markets

US: 6-D: Corresponds to a forefoot ball width of 8.9 $\text{cm}$ (3.5 $\text{in}$ ), ball width range of 8.7–9.1 $\text{cm}$ (3.42–3.58 $\text{in}$ ), reference foot length of 22.5 $\text{cm}$ (8.85 $\text{in}$ ), and fit classification Wide (6-D).

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).