US: 8.5–10.5 to United Kingdom Size 3.5–5

Cross-market men’s sock conversion mapping 8.5–10.5 specifications into 3.5–5.

From Standard & Size
US
Converted Equivalent
UK
8–10
Based on row equivalence: US 8.5–10.5 | EU 41.5–44
Standard cross-walk matching active anthropometric row parameters.
US: 8.5–10.5 to United Kingdom Size 3.5–5 Conversion

Analyzing Sock Size Equivalence Across Markets

US: 8.5–10.5: Corresponds to a US shoe size range of 8.5–10.5, foot length of 26.5–28 cm\text{cm} (10.4–11 in\text{in}), and fit classification Standard Regular Fit.

United Kingdom Size 3.5–5: Corresponds to a US shoe size range of 4–5.5, foot length of 22–23.5 cm\text{cm} (8.7–9.3 in\text{in}), and fit classification Snug / Compact Fit.

Other Conversions to United Kingdom Size 3.5–5