We understand that sizing can be tricky. Each individual product will contain a link to the specific size for that item. Simply click into the product that you're interested in and select "Size". Alternatively, you can refer to our size guides below for more information.
US Men's
| 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 |
US Womens
| 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 |
US Grade School
| 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 - Men's + Women's - Adidas Global Footwear (inc 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
EU Men's
| 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 |
EU Women's
| 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 |