JP to Letter clothing size
The short answer
By the formula, JP 13 is Letter M.
UK and AU are the US number plus 4; FR is DE plus 2, and IT is FR plus 4. A tag that only says EU is usually the FR or the DE number.
| JP | Letter |
|---|---|
| 3 | XS |
| 5 | XS |
| 7 | S |
| 9 | S |
| 11 | M |
| 13 | M |
| 15 | L |
| 17 | L |
| 19 | XL |
| 21 | XL |
| 23 | XXL |