The best sizing method is to measure your feet by placing your heel against the wall and measure out to the end of your big toe. Then add 3/4 inch to give you the 'inside measurement'.
Forma Women's Footwear Sizing
| Euro Size | USA Size | Inside Length (in) |
|---|---|---|
| 35 | 4 | 9.45 |
| 36 | 5 | 9.64 |
| 37 | 6 | 9.84 |
| 38 | 7 | 10.04 |
| 39 | 8 | 10.23 |
| 40 | 9 | 10.43 |
| 41 | 10 | 10.63 |
| 42 | 11 | 11.02 |
| 43 | 12 | 11.24 |
Sizing information is provided by the manufacturer and does not guarantee a perfect fit.