ASICS Shoe Size Guide (UK)
ASICS fits true to size for most buyers: 75% of wearers report a true fit, 10% find it small and 15% 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. Wide-foot widths are offered, so most foot shapes can find a fit.
Save your size passport
Store one foot profile in this browser and reuse it across converters, brand pages and comparison tools.
Local-only by default. Share links include foot length, width and note in the URL, so use them only with people you trust.
ASICS 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.
Do ASICS run true to size?
ASICS running shoes usually fit true to size with a secure heel; wide feet should look for 2E/4E widths.
How ASICS fits
Across our data ASICS true to size. Of wearers, 10% report it runs small, 75% true to size, and 15% large.
| Runs small | True to size | Runs large |
|---|---|---|
| 10% | 75% | 15% |
ASICS width & wide feet
Where this data comes from
Built from 1 ASICS record . See how we calculate for how confidence is scored.
How did ASICS fit you?
Anonymous - no account needed, no email required. Your answer feeds our fit data and helps the next buyer get the right size.