Birkenstock Shoe Size Guide (UK)
Birkenstock runs large: 35% of wearers report a true fit, 5% find it small and 60% 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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Birkenstock 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 Birkenstocks run true to size?
Birkenstock EU sizing maps to foot length — buy your measured size; the cork footbed molds with wear.
How Birkenstock fits
Across our data Birkenstock runs large. Of wearers, 5% report it runs small, 35% true to size, and 60% large.
| Runs small | True to size | Runs large |
|---|---|---|
| 5% | 35% | 60% |
Where this data comes from
Built from 1 Birkenstock record and 1,100 measurements. See how we calculate for how confidence is scored.
How did Birkenstock fit you?
Anonymous - no account needed, no email required. Your answer feeds our fit data and helps the next buyer get the right size.