Crocs Size UK Size EU Sizes JP Size Korea Size Inches Foot length (mm)
M4 4 36-37 22 230 8 5/8 220
M5 5 37-38 23 240 9 221-230
M6 6 38-39 24 250 9 3/8 231-240
M7 7 39-40 25 260 9 5/8 241-250
M8 8 41-42 26 265 10 251-260
M9 9 42-43 27 270 10 3/8 261-270
M10 10 43-44 28 280 10 5/8 271-280
M11 11 45-46 29 290 11 281-290
M12 12 46-47 30 300 11 3/8 291-300
M13 13 48-49 31 310 11 5/8 301-310
M14 14 49-50 32 N/A 12 311-320
M15 15 50-51 33 N/A 12 3/8 321-330
M16 16 51-52 34 N/A 12 5/8 331-340
M17 17 52-53 35 N/a 13 341-350