Note the half-size difference between the US and UK sizes on an adidas shoe. Brands like Nike and Saucony follow a one size difference.
This sizing chart has been updated for November 2021 with minor changes, and also to reflect the larger sizes available in adidas’s catalog.
adidas sizing converts slightly differently compared to most American shoe brands (except New Balance). North American brands use a factor of one between US and UK sizes – meaning a US 10 size converts into a UK 9.
Adidas and New Balance use a conversion factor of a half size between US and UK sizes, so a US 10 converts into a UK 9.5. However, for larger sizes (US 16 and above), the US to UK conversion is rounded to a full size difference.
But for most sizes, the adidas centimeter sizing (defined as ‘JP’ size) progresses linearly with a 0.4 centimeter difference every half-size.
Like any other brand, only the centimeter size represents the true length of your feet. When in doubt, use the centimeter size as a reference when converting sizing between brands.
For example, let’s say that you wear a US size 7 in adidas which translates into a CM size of 25. If you need to find the Nike equivalent, go to the Nike size chart, and look for the CM 25 size.
You’ll see that it lines up with US 7.5, so an adidas US 7 equals US 7.5 in Nike.
On a related note, here are a few buyer’s guides on wide, narrow, and large-sized shoes.
Best running shoes in large sizes 14 to 20.
Best running shoes for narrow feet.
Best running shoes for wide feet.
adidas size conversion chart – Men’s shoes
| US size | UK Size | EU/FR Size | CM/JP Size |
|---|---|---|---|
| 4 | 3.5 | 36 | 22.1 |
| 4.5 | 4 | 36.7 | 22.5 |
| 5 | 4.5 | 37.3 | 22.9 |
| 5.5 | 5 | 38 | 23.3 |
| 6 | 5.5 | 38.7 | 23.8 |
| 6.5 | 6 | 39.3 | 24.2 |
| 7 | 6.5 | 40 | 24.6 |
| 7.5 | 7 | 40.7 | 25 |
| 8 | 7.5 | 41.3 | 25.5 |
| 8.5 | 8 | 42 | 25.9 |
| 9 | 8.5 | 42.7 | 26.3 |
| 9.5 | 9 | 43.3 | 26.7 |
| 10 | 9.5 | 44 | 27.1 |
| 10.5 | 10 | 44.7 | 27.6 |
| 11 | 10.5 | 45.3 | 28 |
| 11.5 | 11 | 46 | 28.4 |
| 12 | 11.5 | 46.7 | 28.8 |
| 12.5 | 12 | 47.3 | 29.3 |
| 13 | 12.5 | 48 | 29.7 |
| 13.5 | 13 | 48.7 | 30.1 |
| 14 | 13.5 | 49.3 | 30.5 |
| 14.5 | 14 | 50 | 31 |
| 15 | 14.5 | 50.7 | 31.4 |
| 16 | 15 | 51.3 | 31.8 |
| 17 | 16 | 52.7 | 32.6 |
| 18 | 17 | 53.3 | 33.5 |
| 19 | 18 | 54.7 | 34.3 |
| 20 | 19 | 55.3 | 35.2 |
adidas size conversion chart – Women’s shoes
Within the women’s conversion chart, only the US sizes change – the UK, FR and JP sizes stay the same. Again, when in doubt, refer the CM size.
| US size | UK Size | EU/FR Size | CM/JP Size |
|---|---|---|---|
| 5 | 3.5 | 36 | 22.1 |
| 5.5 | 4 | 36.7 | 22.5 |
| 6 | 4.5 | 37.3 | 22.9 |
| 6.5 | 5 | 38 | 23.3 |
| 7 | 5.5 | 38.7 | 23.8 |
| 7.5 | 6 | 39.3 | 24.2 |
| 8 | 6.5 | 40 | 24.6 |
| 8.5 | 7 | 40.7 | 25 |
| 9 | 7.5 | 41.3 | 25.5 |
| 9.5 | 8 | 42 | 25.9 |
| 10 | 8.5 | 42.7 | 26.3 |
| 10.5 | 9 | 43.3 | 26.7 |
| 11 | 9.5 | 44 | 27.1 |
| 11.5 | 10 | 44.7 | 27.6 |
| 12 | 10.5 | 45.3 | 28 |
| 12.5 | 11 | 46 | 28.4 |
| 13 | 11.5 | 46.7 | 28.8 |
| 13.5 | 12 | 47.3 | 29.3 |
| 14 | 12.5 | 48 | 29.7 |
| 14.5 | 13 | 48.7 | 30.1 |
| 15 | 13.5 | 49.3 | 30.5 |
| 15.5 | 14 | 50 | 31 |