United Kingdom Size 8-E to US: 8-D

United Kingdom Size 8-E: Corresponds to a foot length of 26.8 $\text{cm}$ (10.55 $\text{in}$), ball width of 10.6 $\text{cm}$ (4.17 $\text{in}$), acceptable ball width range between 10.3–10.9 $\text{cm}$ (4.06–4.29 $\text{in}$), and fit classification Wide (9-2E / EE).

US: 8-D: Corresponds to a foot length of 25.2 $\text{cm}$ (9.92 $\text{in}$), ball width of 10 $\text{cm}$ (3.94 $\text{in}$), acceptable ball width range between 9.7–10.3 $\text{cm}$ (3.82–4.06 $\text{in}$), and fit classification Standard Width (8-D / M).