Adidas to Clarks shoe size
The short answer
adidas 5 is Clarks 5½ by the two brands' own charts. 13 of 15 adidas sizes land on a different label at Clarks.
Both brands publish the foot length each size is built for, so every row matches a foot, not a label.
| adidas | adidas builds it for | Clarks, by chart | Same label | Clarks builds it for | Clarks also prints |
|---|---|---|---|---|---|
| 5 | foot length 22.1 cm | 5½ | 5 | foot length 22.1 cm | UK 3 |
| 5.5 | foot length 22.5 cm | 6 | 5½ | foot length 22.6 cm | UK 3.5 |
| 6 | foot length 22.9 cm | 6½ or 6 | 6 | foot length 23.1 cm | UK 4 |
| 6.5 | foot length 23.3 cm | 6½ or 7 | 6½ | foot length 23.1 cm | UK 4 |
| 7 | foot length 23.8 cm | 7½ | 7 | foot length 23.9 cm | UK 5 |
| 7.5 | foot length 24.2 cm | 8 | 7½ | foot length 24.1 cm | UK 5.5 |
| 8 | foot length 24.6 cm | 8½ | 8 | foot length 24.6 cm | UK 6 |
| 8.5 | foot length 25 cm | 9 | 8½ | foot length 25.1 cm | UK 6.5 |
| 9 | foot length 25.5 cm | 9½ | 9 | foot length 25.4 cm | UK 7 |
| 9.5 | foot length 25.9 cm | 10 | 9½ | foot length 25.9 cm | UK 7.5 |
| 10 | foot length 26.3 cm | 10½ | 10 | foot length 26.2 cm | UK 8 |
| 10.5 | foot length 26.7 cm | 11 | 10½ | foot length 26.7 cm | UK 8.5 |
| 11 | foot length 27.1 cm | 11 or 12 | 11 | foot length 26.7 cm | UK 8.5 |
| 11.5 | foot length 27.6 cm | 12 | not published | foot length 27.7 cm | UK 9.5 |
| 12 | foot length 28 cm | 12 | 12 | foot length 27.7 cm | UK 9.5 |
| 12.5 | foot length 28.4 cm | not made | not published | not published | not published |
| 13 | foot length 28.8 cm | not made | not published | not published | not published |
What wearers say
Charts describe a garment. People who own both brands describe a fit, and their answer ranks above this table once five of them stand behind it. Pick your size in the converter to see whether there are enough yet.
Sources
- adidas size guide, read on 2026-09-17. adidas on TrueToSize
- Clarks size guide, read on 2026-09-18.