How to find your sock size
Because socks stretch, your shoe size usually tells you your sock size. For a precise fit, measure your foot length and match it to the chart.
Because socks stretch, you usually do not need to measure at all: your shoe size tells you your sock size. If you want to be precise, measure your foot length and match it to the chart.
Sock fit matters most for compression and athletic socks, where the right size keeps the heel pocket in place.
- Start from your shoe size. Find your US or EU shoe size in the chart. The sock size on that row is the one to buy.
- Or measure your foot. For a precise fit, measure your foot length from heel to longest toe in centimetres.
- Match the foot length. Find your foot length in the chart to read the sock size directly, which is useful for compression socks.
- Choose for the activity. For athletic and compression socks, pick the exact size. For everyday socks, the range gives you flexibility.
Shoe size to sock size
| 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 |
Measuring questions
How do I find my sock size?
Match your shoe size to the chart, since sock sizes are built around shoe size ranges. For a precise fit, measure your foot length in centimetres and read the sock size on that row.
Are sock sizes unisex?
Often yes, since they cover ranges, but the chart gives separate US men's and women's shoe ranges so you can match to the correct span.
Last reviewed and updated on July 2, 2026. Conversion tables are checked against published international sizing standards.