Professional Birki
Fit verdict, size conversion guide, and millimeter measurements.
This shoe runs approximately 3.9mm longer than standard sizing. If you prefer a snug fit or are between sizes, go a half size down.
Aggregated feedback from verified shoe owners
| EU | US (M) | UK | Foot Length | Cavity Length |
|---|---|---|---|---|
| 35 | 4 | 2.5 | 21.7 cm | 236.88 mm |
| 36 | 5 | 3.5 | 22.4 cm | 243.88 mm |
| 37 | 6 | 4.5 | 23.1 cm | 250.88 mm |
| 38 | 7 | 5 | 23.7 cm | 256.88 mm |
| 39 | 8 | 5.5 | 24.4 cm | 263.88 mm |
| 40 | 9 | 7 | 25.1 cm | 270.88 mm |
| 41 | 10 | 7.5 | 25.7 cm | 276.88 mm |
| 42 | 11 | 8 | 26.4 cm | 283.88 mm |
| 43 | 12 | 9 | 27.1 cm | 290.88 mm |
| 44 | 11 | 9.5 | 27.7 cm | 296.88 mm |
| 45 | 12 | 10.5 | 28.4 cm | 303.88 mm |
| 46 | 13 | 11.5 | 29.1 cm | 310.88 mm |
Does the Birkenstock Professional Birki run big or small?
It tends to run slightly roomy. We recommend ordering a half size down. This shoe runs approximately 3.9mm longer than standard sizing. If you prefer a snug fit or are between sizes, go a half size down.
How does Shoe Fit determine shoe sizing?
Shoe Fit calculates the real-world interior shoe cavity in millimeters combined with real owner feedback, rather than relying on arbitrary brand charts.
Already own a shoe that fits well? Shoe Fit cross-references its internal cavity against the Birkenstock Professional Birki to give you your personalized size.
Help other shoppers find their perfect fit by adding your rating.
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