I can't find shoes that fit properly. Is it possible that shoe sizes are not the same across different brands?
The numbers on a shoe box are not reliable because sizes between styles and brands can vary and your size may range between up to three numbers on different brands. You can't even count on using the same size in your favourite brand because feet can change with age. To get the right fit, try on several sizes.
Shop for shoes as late in the day as possible because feet expand as the day goes on. Sitting down won't give you an accurate fit so stand and walk around until there's no doubt about the comfort level. The ball of your foot must fit well into the widest part of the shoe. If it does, the arch length is correct. If it doesn't, get one that matches your foot width. - Keitumetse Segoai