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Size guide - Birkenstock - Unisex Adults - Footwear
Size guide provided by Birkenstock.
| EU | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 |
| AU | 2-2.5 | 3-3.5 | 4-4.5 | 5-5.5 | 6-6.5 | 7-7.5 | 8-8.5 | 9-9.5 | 10-10.5 | 11-11.5 | 12-12.5 | 13-13.5 | 14-14.5 | 15-15.5 | 16-16.5 | 17-17.5 |
| Length (MM) | 225 | 230 | 240 | 245 | 250 | 260 | 265 | 270 | 280 | 285 | 290 | 300 | 305 | 310 | 315 | 325 |
| Width (MM) | 89 | 91 | 93 | 95 | 97 | 99 | 101 | 102 | 103 | 107 | 109 | 113 | 115 | 117 | 119 | 121 |
| EU | AU | Length (MM) | Width (MM) |
|---|---|---|---|
| 35 | 2-2.5 | 225 | 89 |
| 36 | 3-3.5 | 230 | 91 |
| 37 | 4-4.5 | 240 | 93 |
| 38 | 5-5.5 | 245 | 95 |
| 39 | 6-6.5 | 250 | 97 |
| 40 | 7-7.5 | 260 | 99 |
| 41 | 8-8.5 | 265 | 101 |
| 42 | 9-9.5 | 270 | 102 |
| 43 | 10-10.5 | 280 | 103 |
| 44 | 11-11.5 | 285 | 107 |
| 45 | 12-12.5 | 290 | 109 |
| 46 | 13-13.5 | 300 | 113 |
| 47 | 14-14.5 | 305 | 115 |
| 48 | 15-15.5 | 310 | 117 |
| 49 | 16-16.5 | 315 | 119 |
| 50 | 17-17.5 | 325 | 121 |