UK to CM / JP men's shoe size
The short answer
By the formula, UK 12.5 is CM / JP 31.5. On brand charts the most common answer is 30.75 (1 of 3 brands), and 3 different answers are in print.
The formula and the brands' most common answer differ on 1 of 17 sizes below. Use the brand's own number for the brand you are buying.
| UK | CM / JP by formula | Most brands print | Other answers in print |
|---|---|---|---|
| 5.5 | 24.5 | 24.5 (2 of 4) | 24: Nike; 25: ASICS |
| 6 | 25 | 25 (3 of 4) | 24.5: Nike; 25.5: ASICS |
| 6.5 | 25.5 | 25.5 (3 of 5) | 25: Merrell; 25.75: ASICS |
| 7 | 26 | 26 (4 of 5) | 25.5: Merrell |
| 7.5 | 26.5 | 26.5 (4 of 5) | 26: Merrell |
| 8 | 27 | 27 (4 of 5) | 26.5: Merrell |
| 8.5 | 27.5 | 27.5 (4 of 5) | 27: Merrell |
| 9 | 28 | 28 (4 of 5) | 27.5: Merrell |
| 9.5 | 28.5 | 28.5 (3 of 5) | 28: Merrell; 28.25: ASICS |
| 10 | 29 | 29 (3 of 5) | 28.5: ASICS, Merrell |
| 10.5 | 29.5 | 29.5 (3 of 5) | 29: ASICS, Merrell |
| 11 | 30 | 30 (3 of 5) | 29.5: ASICS, Merrell |
| 11.5 | 30.5 | 30.5 (3 of 5) | 30: ASICS, Merrell |
| 12 | 31 | 31 (3 of 5) | 30.5: ASICS, Merrell |
| 12.5 | 31.5 | 30.75 (1 of 3) | 31: Merrell; 31.5: Nike |
| 13 | 32 | 32 (4 of 5) | 31: ASICS |
| 13.5 | 32.5 | not published | not published |
The widest split is at UK 5.5: brand charts print anything from CM / JP 24 to 25 for the same size.