International conversions Nov 20, 2026 3 min read
Sock Size Conversion: US to EU
US socks use letter sizing keyed to shoe size. EU socks use shoe size directly (35, 39, 42, 46). One pair often spans 2-3 EU sizes.
The Chart
| US Letter | US Shoe Range | EU Shoe Range |
|---|---|---|
| S | Men 6-7.5 / Women 4-6 | 39-42 / 35-37 |
| M | Men 8-10.5 / Women 6.5-9 | 43-44 / 37-40 |
| L | Men 11-13 / Women 9.5-12 | 45-46 / 40-43 |
| XL | Men 13.5-15 | 47-49 |
| 2XL | Men 15.5-17 | 50-52 |
FAQs
Do I need exact size for socks?
Stretch covers a 2-3 size range. For athletic socks (running, basketball) tighter fit matters — pick the EU range that contains your size. For casual socks, any letter size in your range works.
Compression sock sizing?
Different system — needs ankle + calf circumference plus shoe size. See our compression sock chart for details.
Need this on your store?
Tailor Size Guide ships pre-built size charts for Shopify.