| FitFlop | |||||
| US/AUS | UK | EU | Length (cm) | Width | |
| Women's | |||||
| 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 | ||
| 8.5 | 6.5 | 40 | 24.6-25.4 | ||
| 9 | 7 | 41 | 25-25.8 | ||
| 9.5 | 7.5 | 41.5 | 25.5-26.2 | ||
| 10 | 8 | 42 | 25.8-26.6 | ||
| 11 | 9 | 43 | 26.7-27.4 | ||
