US women's to US men's shoe size
The short answer
By the formula, US women's 8.5 is US men's 7. On brand charts the most common answer is 7 (5 of 9 brands), and 3 different answers are in print.
The formula and the brands' most common answer agree on every size below. Use the brand's own number for the brand you are buying.
| US women's | US men's by formula | Most brands print | Other answers in print |
|---|---|---|---|
| 5 | 3.5 | 3.5 (5 of 8) | 4: adidas, Arc'teryx; 3: Converse |
| 5.5 | 4 | 4 (6 of 10) | 4.5: adidas, Arc'teryx, La Sportiva; 3.5: Converse |
| 6 | 4.5 | 4.5 (6 of 10) | 5: adidas, Arc'teryx, La Sportiva; 4: Converse |
| 6.5 | 5 | 5 (6 of 10) | 5.5: adidas, Arc'teryx, La Sportiva; 4.5: Converse |
| 7 | 5.5 | 5.5 (6 of 10) | 6: adidas, Arc'teryx, La Sportiva; 5: Converse |
| 7.5 | 6 | 6 (6 of 10) | 6.5: adidas, Arc'teryx, La Sportiva; 5.5: Converse |
| 8 | 6.5 | 6.5 (6 of 11) | 7: adidas, Arc'teryx, La Sportiva; 6: Converse, VEJA |
| 8.5 | 7 | 7 (5 of 9) | 7.5: adidas, Arc'teryx, La Sportiva; 6.5: Converse |
| 9 | 7.5 | 7.5 (6 of 11) | 8: adidas, Arc'teryx, La Sportiva; 7: Converse, VEJA |
| 9.5 | 8 | 8 (6 of 10) | 8.5: adidas, Arc'teryx, La Sportiva; 7.5: Converse |
| 10 | 8.5 | 8.5 (6 of 11) | 9: adidas, Arc'teryx, La Sportiva; 8: Converse, VEJA |
| 10.5 | 9 | 9 (6 of 10) | 9.5: adidas, Arc'teryx, La Sportiva; 8.5: Converse |
| 11 | 9.5 | 9.5 (6 of 11) | 10: adidas, Arc'teryx, La Sportiva; 9: Converse, VEJA |
| 11.5 | 10 | 10 (6 of 10) | 9.5: Converse, VEJA; 10.5: adidas, Arc'teryx |
| 12 | 10.5 | 10.5 (4 of 7) | 11: adidas, Arc'teryx; 10: Converse |
The widest split is at US women's 5: brand charts print anything from US men's 3 to 4 for the same size.