Letter to US clothing size
The short answer
By the formula, Letter XXS is US 00. On brand charts the most common answer is 0 (7 of 8 brands), and 2 different answers are in print.
The formula and the brands' most common answer differ on 7 of 7 sizes below. Use the brand's own number for the brand you are buying.
| Letter | US by formula | Most brands print | Other answers in print |
|---|---|---|---|
| XXS | 00 | 0 (7 of 8) | 2: lululemon |
| XS | 0 to 2 | 2 (7 of 13) | 0: Banana Republic, Diane von Furstenberg, Gap, J.Crew, Reformation, Reiss; 0-2: Athleta, Farm Rio, Under Armour; 4: lululemon |
| S | 4 to 6 | 4 (6 of 12) | 6: Banana Republic, Boden, Gap, J.Crew, lululemon, Reiss; 4-6: Athleta, Farm Rio, Talbots; 2/4: Diane von Furstenberg, Reformation |
| M | 8 to 10 | 8 (6 of 12) | 10: Banana Republic, Boden, Gap, J.Crew, Reiss; 8-10: Athleta, Farm Rio, Talbots; 6/8: Diane von Furstenberg, Reformation; 6: Sandro |
| L | 12 to 14 | 12 (5 of 12) | 14: Banana Republic, Boden, Gap, J.Crew, Reiss; 12-14: Athleta, Farm Rio, Talbots; 10: lululemon, Reformation; 8: Sandro; 10/12: Diane von Furstenberg |
| XL | 16 to 18 | 16 (6 of 12) | 18: Banana Republic, Boden, Gap; 16-18: Athleta, Talbots; 10: Sandro; 12: Reformation; 12-14: lululemon; 14/16: Diane von Furstenberg |
| XXL | 20 to 22 | 18 (2 of 4) | 20: Banana Republic, Gap; 22: Gap |
The widest split is at Letter XXL: brand charts print anything from US 18 to 22 for the same size.