Rule of Toe:

For women subtract 3 sizes from your Canadian size. 
For men subtract 1 size from your Canadian size.
For kid’s subtract 1 size from your Canadian size. 

It is not abnormal for there to be some initial movement in the boot, particularly in the heel area. Length is the most important element when trying them on. All Blundstone boots have reinforced toes which help keep the shape of the boot intact. The boots will never stretch in length. However, they will stretch and mold to the top of the feet, and will easily stretch in width if required. If the fit is initially tight on the top of your feet—be patient, it will stretch, or can be easily stretched by a cobbler.

All Blundstone styles aside from the Women’s series, are unisex. 

This size conversion chart provides a simple guideline.