Enter your Nike US size to see UK, EU and foot length.
Nike runs narrow. If you have medium to wide feet, consider going up half a size. Nike's standard width is narrower than brands like New Balance or ASICS.
This Nike shoe size converter uses Nike's official sizing chart to convert Nike US sizes to EU, UK, and centimeters. Nike sizes are standard US sizes in their numbering, but Nike shoes run notably narrow compared to many other brands. Nike labels EU sizes in whole and half numbers — Nike men's US 9 = EU 42.5 — unlike Adidas, which uses fractional EU sizes. This tool also includes a full Nike model-specific fit guide below so you know exactly whether to size up, down, or stay true for any Nike shoe.
Nike Men's Shoe Size Chart — US, UK, EU & CM
Source: Nike official size guide (nike.com). Cross-checked with Solereview and Runrepeat fit data.
| US | UK | EU | Foot CM |
|---|---|---|---|
| 6 | 5.5 | 38.5 | 24.0 |
| 6.5 | 6 | 39 | 24.5 |
| 7 | 6 | 40 | 25.0 |
| 7.5 | 6.5 | 40.5 | 25.5 |
| 8 | 7 | 41 | 26.0 |
| 8.5 | 7.5 | 42 | 26.5 |
| 9 | 8 | 42.5 | 27.0 |
| 9.5 | 8.5 | 43 | 27.5 |
| 10 | 9 | 44 | 28.0 |
| 10.5 | 9.5 | 44.5 | 28.5 |
| 11 | 10 | 45 | 29.0 |
| 11.5 | 10.5 | 45.5 | 29.5 |
| 12 | 11 | 46 | 30.0 |
| 13 | 12 | 47.5 | 31.0 |
Nike Women's Shoe Size Chart
| US | UK | EU | Foot CM |
|---|---|---|---|
| 5 | 2.5 | 35.5 | 22.0 |
| 5.5 | 3 | 36 | 22.5 |
| 6 | 3.5 | 36.5 | 23.0 |
| 6.5 | 4 | 37.5 | 23.5 |
| 7 | 4.5 | 38 | 24.0 |
| 7.5 | 5 | 38.5 | 24.5 |
| 8 | 5.5 | 39 | 25.0 |
| 8.5 | 6 | 40 | 25.5 |
| 9 | 6.5 | 40.5 | 26.0 |
| 9.5 | 7 | 41 | 26.5 |
| 10 | 7.5 | 42 | 27.0 |
| 10.5 | 8 | 42.5 | 27.5 |
| 11 | 8.5 | 43 | 28.0 |
Nike Model Fit Guide — Size Up, Down, or True?
| Nike Model | Fit | Recommendation |
|---|---|---|
| Air Force 1 | Runs about half a size big | Most people go down 0.5 |
| Dunk Low / High | Narrow toe box | Wide feet: size up 0.5 |
| Jordan 1 Low / High | Narrow, slightly long | Wide/medium feet: size up 0.5 |
| Jordan 4 | True to size | Order your true size |
| Air Max 90 / 95 / 97 | True to size | Order your true size |
| React Infinity Run / Pegasus | True to size | Size up 0.5 for long runs |
| Free RN / Metcon | Runs slightly small | Size up 0.5 |
| Blazer Mid / Low | True to size | Order your true size |
| Flyknit models | Narrow knit upper | Wide feet: size up 0.5 |
Frequently Asked Questions
Do Nike shoes run true to size?
Nike shoes run true to size in length but are notoriously narrow in width. If you have average or narrow feet, your true size works. For wide feet, go up half a size.
What EU size is Nike US 9?
Nike US men's 9 = EU 42.5 = UK 8 = 27.0 cm. Nike US women's 9 = EU 40.5 = UK 6.5 = 26.0 cm.
Should I size up for Jordan 1?
Yes if you have medium or wide feet — Jordan 1 runs narrow. Size up half a size. If you have narrow feet, your true size fits well.
Are Nike and Adidas sizes the same?
The US number represents the same foot length, but Adidas uses fractional EU sizes (e.g. 42⅔) while Nike uses whole or half EU values. Adidas tends to run slightly wider.
Can women wear men's Nike shoes?
Yes. Women sizing down 1.5 US sizes from their women's size gives the equivalent men's Nike size. A women's Nike US 8 = men's Nike US 6.5 in foot length.