My shoe size ranges between 10 and 11 in women's, depends on the shoe style, or how well made the shoe is, and some companies just can't measure properly, and this is the same for clothing, I'm usually a medium, sometimes a large in ladies' tops again depending on the style, but tried on some items recently from one maker, and even the x-large I could barely get on me, and these are misses not juniors. Best thing to do, try 'em on. I'm also all for comfort, shoe isn't comfortable the moment I slip my foot in, it comes right back off and back on the shelf it goes, though I do remember a day when I was first trying to come out as a woman, being ever desperate I was I wanted to look good so dealt with the pain of uncomfortable shoes and other stuff.