I wear a Men's 9 in all standard shoes and boots. However these boots run big. I read the reviews, despite the unhelpful ness of almost all product descriptions for these boots, and ordered a 1/2 size smaller.
They are still huge. For boots that cost over $100, I would appreciate a little more candor from the sellers on how to order the best size of their product. I couldn't even get an exchange because they are out of 8's. I would recommend ordered a FULL SIZE smaller than your street shoe size. To be clear, I love Durango harness boots, Im on my 3rd pair of my life - i had thought these would be my fourth. Either these are sourced and made somewhere different, or Durango changed their sizing, cause these were ridiculously sized. sooooo disappointed in Durango and seller.