US to UK Sock Size Conversion
| US Shoe Range | UK Shoe Range |
|---|---|
| S (4-6) | 3-5 |
| M (7-9) | 6-8 |
| L (10-12) | 9-11 |
Sizing conventions vary by brand and by cut — this table shows the standard published conversion. Always check the garment's own size chart when one is available. See how these tables are compiled.
A US shoe-size range of 10-12 converts to a UK range of 9-11 on the standard chart, tracking the same offset as the equivalent shoe conversion rather than introducing separate sock-specific arithmetic.
UK sock packaging is more likely to print the UK shoe range directly than a separate EU or US figure, so this conversion is mainly useful for online orders from UK retailers rather than in-store UK shopping, where the range is usually printed as-is.
If your foot sits right at the edge of the printed range, a tighter-knit brand is worth sizing up on, since sock stretch varies noticeably between a thin dress sock and a thick athletic one.
Frequently asked questions
Does US-to-UK sock sizing use the same offset as shoe sizing?
Yes — sock ranges are built from the same shoe-size bands, so the US-to-UK gap you'd expect from shoes carries over directly to socks.