Birkenstock Size Guide

UNISEX ADULT'S FOOTWEAR
UK Unisex EU Unisex US Men's  US Women's 
2.5 35 3.5 5
3 36 4.5 6
4 37 5.5 7
5 38 6.5 8
6 39-40 7.5 9
6.5 40 8 9.5
7 41 8.5 10
8 42 9.5 11
9 43-44 10.5 12
10 45 11.5 13
10.5 45-46 12 13.5
11 46 12.5 14
12 47-48 13.5 15
13 49 14.5 16

 

KID'S FOOTWEAR
UK EU US
11.5 30 12.5
12 31 13
12.5 31-32 13.5
13 32 1
13.5 33 1.5
1 34 2
1.5 34-35 2.5
2 35 3
2.5 36 3.5
3 36-37 4
3.5 37 4.5
4 37-38 5
4.5 38 5.5
5 39 6
5.5 39-40 6.5
6 40 7