Size Guide - Birkenstocks

These measurements are footbed dimensions.

We recommend choosing a footbed size by adding 10mm to the length of your foot.

ADULTS
Size Length Width
35 Narrow 225mm 85mm
36 Narrow 230mm 87mm
37 Narrow 240mm 89mm
38 Narrow 245mm 91mm
39 Narrow 250mm 93mm
40 Narrow 260mm 95mm
41 Narrow 265mm 97mm
42 Narrow 270mm 99mm
43 Narrow 280mm 101mm
44 Narrow 285mm 103mm
45 Narrow 290mm 105mm
46 Narrow 300mm 107mm
47 Narrow 305mm 109mm
48 Narrow 310mm 111mm
49 Narrow 315mm 113mm
50 Narrow 320mm 115mm
 
KIDS
Size Length Width
24 Narrow 150mm 63mm
25 Narrow 160mm 65mm
26 Narrow 165mm 67mm
27 Narrow 170mm 69mm
28 Narrow 180mm 71mm
29 Narrow 185mm 73mm
30 Narrow 190mm 75mm
31 Narrow 200mm 77mm
32 Narrow 205mm 79mm
33 Narrow 210mm 81mm
34 Narrow 220mm 83mm