I wear a women's 10 1/2 wide, although sizes vary by brand and where they were made.  Usually I order a 42 in Ecco, Dansko, etc.  Thanks to previous reviews I ordered a 41 in these, and although they are almost too small, they do fit with thin wool socks..  A 42 would have been way too big.  That said, I love the tooled leather look, and had many compliments the first time I wore them to work.  The arch support is good, and the cushion is just right.  The price from the Amazon seller Brick Oven was great, too!