Size guides will differ between brands. Each product on our site will include its own size guide for reference. Below are general shoe and apparel size guides for mens, womens and kids.
MENS FOOTWEAR
| US Men | US Women | UK | EU |
| 4 | 5.5 | 3 | 36 |
| 4.5 | 6 | 3.5 | 36.5 |
| 5 | 6.5 | 4 | 37.5 |
| 5.5 | 7 | 4.5 | 38 |
| 6 | 7.5 | 5 | 38.5 |
| 6.5 | 8 | 5.5 | 39 |
| 7 | 8.5 | 6 | 40 |
| 7.5 | 9 | 6.5 | 40.5 |
| 8 | 9.5 | 7 | 41 |
| 8.5 | 10 | 7.5 | 42 |
| 9 | 10.5 | 8 | 42.5 |
| 9.5 | 11 | 8.5 | 43 |
| 10 | 11.5 | 9 | 44 |
| 10.5 | 12 | 9.5 | 44.5 |
| 11 | 12.5 | 10 | 45 |
| 11.5 | 13 | 10.5 | 45.5 |
| 12 | 13.5 | 11 | 46 |
| 12.5 | 14 | 11.5 | 47 |
| 13 | 14.5 | 12 | 47.5 |
| 13.5 | 15 | 12.5 | 48 |
| 14 | 15.5 | 13 | 48.5 |
| 15 | 16.5 | 14 | 49 |
WOMENS FOOTWEAR
| US Women | US Men | UK | EU |
| 5.5 | 4 | 3 | 36 |
| 6 | 4.5 | 3.5 | 36.5 |
| 6.5 | 5 | 4 | 37.5 |
| 7 | 5.5 | 4.5 | 38 |
| 7.5 | 6 | 5 | 38.5 |
| 8 | 6.5 | 5.5 | 39 |
| 8.5 | 7 | 6 | 40 |
| 9 | 7.5 | 6.5 | 40.5 |
| 9.5 | 8 | 7 | 41 |
| 10 | 8.5 | 7.5 | 42 |
| 10.5 | 9 | 8 | 42.5 |
| 11 | 9.5 | 8.5 | 43 |
| 11.5 | 10 | 9 | 44 |
| 12 | 10.5 | 9.5 | 44.5 |
| 12.5 | 11 | 10 | 45 |
| 13 | 11.5 | 10.5 | 45.5 |
| 13.5 | 12 | 11 | 46 |
| 14 | 12.5 | 11.5 | 47 |
| 14.5 | 13 | 12 | 47.5 |
| 15 | 13.5 | 12.5 | 48 |
| 15.5 | 14 | 13 | 48.5 |
| 16.5 | 15 | 14 | 49 |
GRADE SCHOOL - KIDS
| US Kids | UK | CM | EU |
| 4 | 3.5 | 23 | 36 |
| 5 | 4.5 | 23.5 | 37.5 |
| 6 | 5.5 | 24 | 38.5 |
| 7 | 6 | 25 | 40 |
UK SIZE CHART: Mens & Womens - Adidas Global Footwear (incl. some UltraBOOST, 4D, Y-3 styles)
| UK | US Men | US Women | EU |
| 3.5 | 4 | 5 | 36 |
| 4 | 4.5 | 5.5 | 36 2/3 |
| 4.5 | 5 | 6 | 37 1/3 |
| 5 | 5.5 | 6.5 | 38 |
| 5.5 | 6 | 7 | 40 |
| 6 | 6.5 | 7.5 | 39 1/3 |
| 6.5 | 7 | 8 | 40 |
| 7 | 7.5 | 8.5 | 40 2/3 |
| 7.5 | 8 | 9 | 41 1/3 |
| 8 | 8.5 | 9.5 | 42 |
| 8.5 | 9 | 10 | 42 2/3 |
| 9 | 9.5 | 10.5 | 43 1/3 |
| 9.5 | 10 | 11 | 44 |
| 10 | 10.5 | 11.5 | 44 2/3 |
| 10.5 | 11 | 12 | 45 1/3 |
| 11 | 11.5 | 12.5 | 46 |
| 11.5 | 12 | 13 | 46 2/3 |
| 12 | 12.5 | 13.5 | 47 1/3 |
| 12.5 | 13 | 14 | 48 |
| 13 | 13.5 | 14.5 | 48 2/3 |
| 13.5 | 14 | 15 | 49 1/3 |
| 14 | 14.5 | 15 | 50 |
COMMON PROJECTS FOOTWEAR - EU SIZING
MENS FOOTWEAR
| EU | US Men | UK |
| 39 | 6 | 5 |
| 40 | 7 | 6 |
| 41 | 8 | 7 |
| 42 | 9 | 8 |
| 43 | 10 | 9 |
| 44 | 11 | 10 |
| 45 | 12 | 11 |
WOMENS FOOTWEAR
| EU | US Women | UK |
| 34 | 3.5 | 1 |
| 35 | 4.5 | 2 |
| 36 | 5.5 | 3 |
| 37 | 6.5 | 4 |
| 38 | 7.5 | 5 |
| 39 | 8.5 | 6 |
| 40 | 9.5 | 7 |
| 41 | 10.5 | 8 |
| 42 | 11.5 | 9 |
SUBTYPE TROUSERS
| XXS | XS | S | M | L | XL | |
| Waist | 34.5cm | 37cm | 39.5cm | 42cm | 44.5cm | 47cm |
| Out Leg | 95cm | 96cm | 97cm | 98cm | 99cm | 100cm |
| Inner Leg | 57cm | 57cm | 57cm | 57cm | 57cm | 57cm |