Size / Fitflop Women's
| US | UK | EU | JAPAN (CM) |
| 5 | 3 | 36 | 21.6–22.4 |
| 6 | 4 | 37 | 22.5–23.3 |
| 6.5 | 4.5 | 37.5 | 22.9–23.7 |
| 7 | 5 | 38 | 23.3–24.1 |
| 7.5 | 5.5 | 38.5 | 23.7–24.5 |
| 8 | 6 | 39 | 24.2–25.0 |
| 8.5 | 6.5 | 40 | 24.6–25.4 |
| 9 | 7 | 41 | 25.0–25.8 |
| 9.5 | 7.5 | 41.5 | 25.5–26.2 |
| 10 | 8 | 42 | 25.8–26.6 |
| 11 | 9 | 43 | 26.7–27.4 |