The men’s↔women’s US gap is not always 1.5. Converse uses 2, Adidas uses 1, many athletic brands use 1.5 — and UK/EU unisex brands don’t use a women’s US gap at all.
Signature table: label gap vs practical gap (when men’s lasts run wider).
| Brand | Label scale | Gender offset | Practical | Guides |
|---|---|---|---|---|
| Adidas | US MENS | 1 | 1 | 9 |
| Birkenstock | EU UNISEX | — | — | 2 |
| Blundstone | UK UNISEX | — | — | 2 |
| Brooks | US MENS | 1.5 | 1.5 | 2 |
| Clarks | UK UNISEX | — | — | 2 |
| Converse | US MENS | 2 | 2 | 2 |
| Doc Martens | UK UNISEX | — | — | 4 |
| Jordan | US MENS | 1.5 | 1.5 | 2 |
| Nike | US MENS | 1.5 | 1 | 8 |
| Vans | US MENS | 1.5 | 1.5 | 4 |
Also see the size converter and model fit guides (runs big / small).