Sock size chart
Sock sizes are really shoe size ranges. This chart maps each sock size to the US men's and women's shoe sizes it fits, the EU range and the foot length.
| Sock size | US Men shoe | US Women shoe | EU shoe | Foot (cm) |
|---|---|---|---|---|
| S | 5 to 7 | 6 to 8 | 38 to 40 | 23 to 24.5 |
| M | 7.5 to 9 | 8.5 to 10 | 40.5 to 42.5 | 25 to 26.5 |
| L | 9.5 to 12 | 10.5 to 13 | 43 to 46 | 27 to 29 |
| XL | 12.5 to 15 | 13.5 to 16 | 46.5 to 49 | 29.5 to 31.5 |
Sock sizes look mysterious because they are printed as their own small range like 9 to 11, but they are really just shoe size bands. A sock size covers a span of shoe sizes and, underneath, a span of foot lengths, so the same pair fits several neighbouring shoe sizes.
The chart below maps each sock size to the US men's and women's shoe ranges it fits, the EU shoe range and the foot length in centimetres, so you can pick socks correctly whether you shop by US, EU or your measured foot.
Sock size questions
What sock size am I?
Match your shoe size to the chart. A US men's 8 to 9 or women's 8.5 to 10 is a medium sock, which is EU 40.5 to 42.5. Sock sizes cover a range, so exact shoe size is not critical.
What does a sock size like 9 to 11 mean?
That range is the span of US shoe sizes the sock is designed to fit. The stretch in the knit lets one sock size cover several shoe sizes comfortably.
Do socks come in EU sizes?
Yes. European socks are often labelled by the EU shoe range they fit, for example 43 to 46 for a large. The chart lines up US, EU and foot length so you can convert.
Last reviewed and updated on July 2, 2026. Conversion tables are checked against published international sizing standards.