Because the foot is three-dimensional, any two-dimensional measuring tool, such as a ruler or Brannock device®, can only approximate your true shoe size. Please also keep in mind the manufacturers use different lasts to construct their shoes, and sizing may vary accordingly. Make sure you are standing, wearing the socks or stockings you will wear with your new shoes. Using one of the following charts, convert your inches measurement to your U.S. shoe size or Euro shoe size. Use this conversion to order from our European-Sized Brands.