| Crocs Size | UK Size | Continental Size | US Size |
|---|---|---|---|
| XS ( UK 2-3) | 2.5 - 3 | 35 - 35.5 | M3 W5 |
| S ( UK 4-5) | 3.5 - 5 | 36 - 38 | M4 W6 - M5 W7 |
| M ( UK 6-7) | 5.5 - 7 | 38.5 - 41 | M3 W8 - M7 W9 |
| L ( UK 8-9) | 7.5 - 9 | 42 - 43.5 | M8 W10 - M9 W11 |
| XL ( UK 10) | 10 - 11 | 44 - 46 | M10 W12 - 11 |
| XXL ( UK 12) | 11.5 - 12 | 46 - 46.5 | 12 |
| Size UK 2 | 1.5 - 2 | 33.5 - 34 | M2 W4 |
| Size UK 3 | 2.5 - 3 | 35 - 35.5 | M3 W5 |
| Size UK 4 | 3.5 - 4 | 36 - 37 | M4 W6 |
| Size UK 5 | 4.5 - 5 | 37.5 - 38 | M5 W7 |
| Size UK 6 | 5.5 - 6 | 38.5 - 39 | M6 W8 |
| Size UK 7 | 6.5 - 7 | 40 - 41 | M7 W9 |
| Size UK 8 | 7.5 - 8 | 42 - 42.5 | M8 W10 |
| Size UK 9 | 8.5 - 9 | 43 - 43.5 | M9 W11 |
| Size UK 10 | 9.5 - 10 | 44 - 44.5 | M10 W12 |
| Size UK 11 | 11 - 11.5 | 45 | 11 |
| Size UK 12 | 11.5 - 12 | 46.5 | 12 |
| Size UK 13 | 12.5 - 13 | 47 - 47.5 | 13 |
| Baby UK 1-2 | Kids 1 - Kids 2 | 19 - 20 | 2-3 Kids |
| Baby UK 3-4 | Kids 3 - Kids 4 | 21 - 22 | 4-5 Kids |
| Kids UK 5-6 | 5 - 6 | 23 - 24 | 6-7 Kids |
| Kids UK 7-8 | 7 - 8 | 25 - 26 | 8-9 Kids |
| Kids UK 9-10 | 9 - 10 | 27 - 28 | 10-11 Kids |
| Kids UK 11-12 | 11 - 12 | 29 - 30.5 | 12-13 Kids |
| Kids UK 13- Size 1 | 13/1 | 31.5 - 33 | M1 W3 |
| Kids UK 2 | 1.5 | 33.5 - 34 | M2 W4 |
| Kids UK 3 | 2.5 - 3 | 35 - 35.5 | M3 W5 |