Birkenstock Sock Size & Width Guide

Birkenstock sock size chart (measurements in mm)
EU Women's US Men's US Width Foot length Foot width
From To From To
35 4 – 4½ — Narrow 217 223 81 84
Regular 217 223 85 89
36 5 – 5½ — Narrow 224 230 83 86
Regular 224 230 87 91
37 6 – 6½ — Narrow 231 236 84 89
Regular 231 236 90 98
38 7 – 7½ — Narrow 237 243 86 91
Regular 237 243 92 100
39 8 – 8½ — Narrow 244 250 88 93
Regular 244 250 94 102
40 9 – 9½ 7 – 7½ Narrow 251 257 90 95
Regular 251 257 96 104
41 10 – 10½ 8 – 8½ Narrow 258 263 91 96
Regular 258 263 97 105
42 11 – 11½ 9 – 9½ Narrow 264 270 93 97
Regular 264 270 98 107
43 — 10 – 10½ Narrow 271 276 95 100
Regular 271 276 101 109
44 — 11 – 11½ Narrow 277 283 97 102
Regular 277 283 103 111
45 — 12 – 12½ Narrow 284 291 99 104
Regular 284 291 105 113
46 — 13 – 13½ Narrow 292 299 101 106
Regular 292 299 107 115
47 — 14 – 14½ Narrow 300 306 103 108
Regular 300 306 109 117
48 — 15 – 15½ Narrow 307 313 105 110
Regular 307 313 111 119

All measurements are in millimeters. Match your sock EU size to your Birkenstock sandal EU size. Choose Narrow for slim feet and Regular for medium to wide feet. Sizes EU 40–42 fit both women's and men's US sizes.