I use the standard foot size chart below when gauging the sizes for my jewellery.  If you aren't sure about your size, just measure the length of your foot from toes to heel, then (on top of foot) from just below your middle toe to where your ankle starts.

 

Standard Women's Foot Size Guide

UK Size EU Size US Size Foot Length
(mm)
Foot Joint (mm)
2 35 5 212 214
3 36 6 220 220
4 37 7 229 226
5 38 8 237 233
6 39 9 246 240
7 40 10 254 246
8 41 11 262 253
9 42 12 270 259

 

How to measure

To measure your feet stand on a level floor with the back of your heels against a straight edge or wall. When measuring you might find it easier to do this with a friend.


Women's footwear conversion & measurement chart - how to choose the right size footwear