Because the foot is three-dimensional, any two-dimensional measuring tool can only approximate your true shoe size. Please also keep in mind the manufacturers use different lasts to construct their shoes, and sizing may vary accordingly.
| Millimeters | 225 | 232.5 | 240 | 247.5 | 255 | 262.5 | 270 | 277.5 | 285 | 292.5 | 300 | 307.5 | 315 | 322.5 | 330 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Europe | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 |
| UK | 2.5 | 3 | 4 | 5 | 6 | 6.5 | 7 | 8 | 9 | 10 | 10.5 | 11 | 12 | 13 | 14 |