Originally Posted by NoVaguy
46c = 92 centimeters around (i.e., 46 * 2), which converts to 36.22 inches.
Right. To do the metric to US conversion in suit sizes, multiply the Euro size by .7874. The usual way to convert, by subtracting 10, is an approximation that only works for smaller sizes and gets worse as the size gets larger. It's wrong by more than 1" by the time you get to Euro 52.
I recall trying on Gucci bit loafers with an elongated toe in a Neiman-Marcus one day. First I tried on my normal size at the time, US 11.5. Then I tried 11, 10.5 and 10 before I decided the shoes were too narrow and gave up. The Moreschi shoes I've tried on in the US, though, seemed true to size, probably because the men's store that stocked them insisted on accurate US sizing.