US to EU Underwear Size Conversion Chart
Convert US underwear sizes to European equivalents. EU uses number-based sizing while US uses letter sizes.
Women's US to EU Underwear Sizes
| US | EU | UK |
|---|---|---|
| XS (0-2) | 34 | 6 |
| S (4-6) | 36 | 8 |
| M (8-10) | 38-40 | 10-12 |
| L (12-14) | 42-44 | 14-16 |
| XL (16-18) | 46 | 18 |
| XXL (20-22) | 48-50 | 20-22 |
Men's US to EU Underwear Sizes
| US | EU | UK |
|---|---|---|
| S (28-30) | 3-4 | S |
| M (32-34) | 5 | M |
| L (36-38) | 6 | L |
| XL (40-42) | 7 | XL |
| XXL (44-46) | 8 | XXL |
How US and EU Underwear Sizes Differ
US underwear uses letter sizes (S, M, L, XL) based on waist measurements in inches. EU uses numbered sizes that correspond to body measurements in centimeters. Women's EU sizing (34-50) maps to dress sizes. Men's EU sizing (3-8) is a simpler numbered scale.
The conversion is straightforward but varies slightly by brand. Most mainstream brands follow the standard sizing shown above. When in doubt, measure your waist and hips and compare against the brand's specific size chart.
For a personalized fit recommendation, use our underwear size calculator or browse all brands on our underwear size chart hub.
Frequently Asked Questions
US Small equals approximately EU 36 for women and EU 3-4 for men. US Medium equals approximately EU 38-40 for women and EU 5 for men. See our complete chart above for all size conversions.
No. EU uses different number scales for men (3-8) and women (34-50). Always check if a size chart specifies men's or women's.
For women, US Medium = EU 38-40. For men, US Medium = EU 5.
Most follow the EU standard, but some brands (especially French and Italian) may use their own scales. Our chart shows standard EU sizes.