United Kingdom Size 7-C to US: 7-4A

United Kingdom Size 7-C: Corresponds to a forefoot ball width of 9.2 $\text{cm}$ (3.62 $\text{in}$), ball width range of 9–9.4 $\text{cm}$ (3.55–3.7 $\text{in}$), reference foot length of 24 $\text{cm}$ (9.45 $\text{in}$), and fit classification Standard Width (9-B).

US: 7-4A: Corresponds to a forefoot ball width of 8 $\text{cm}$ (3.15 $\text{in}$), ball width range of 7.8–8.2 $\text{cm}$ (3.05–3.25 $\text{in}$), reference foot length of 23 $\text{cm}$ (9.05 $\text{in}$), and fit classification Extra Narrow (7-4A / Slim).