Nike Shoe Size Guide (UK)
Nike runs small: 40% of wearers report a true fit, 55% find it small and 5% find it large. Use the table below to convert your foot length in millimetres straight to UK, US, EU and CM sizes — the one measurement every system agrees on. Only standard (D) width is offered, so very wide feet may need to size up.
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Nike size conversion table
| Foot length | UK | EU | US Men | US Women | CM |
|---|---|---|---|---|---|
| 240mm | 5.5 | 36 | 6.5 | 8 | 24 |
| 250mm | 6.5 | 38 | 7.5 | 9 | 25 |
| 260mm | 7.5 | 39 | 8.5 | 10 | 26 |
| 270mm | 9 | 41 | 10 | 11.5 | 27 |
| 280mm | 10 | 42 | 11 | 12.5 | 28 |
| 290mm | 11.5 | 44 | 12.5 | 14 | 29 |
| 300mm | 12.5 | 45 | 13.5 | 15 | 30 |
EU sizes are always rounded to a whole size — there is no exact half-size equivalent, so treat the EU column as the closest honest match.
Does Nike run small or large?
Nike typically runs about half a US size small on most lifestyle and performance lines — size up if between sizes.
How Nike fits
Across our data Nike runs small. Of wearers, 55% report it runs small, 40% true to size, and 5% large.
| Runs small | True to size | Runs large |
|---|---|---|
| 55% | 40% | 5% |
Where this data comes from
Built from 1 Nike record and 3,200 measurements. See how we calculate for how confidence is scored.
How did Nike fit you?
Anonymous - no account needed, no email required. Your answer feeds our fit data and helps the next buyer get the right size.