In reply to abcdef:
> "Having UK Size 13 feet" - don't think a Sportiva 48 is going to fit a large foot for length. I am a 12 and have got 49s. No 48, even Scarpa and the likes, has ever fitted me in these type of boots.
I see in another thread you note the same anomaly in your experience. I agree Scarpas can be short for their size. Although there are infinite variations in peoples' feet, and significant variations between brands, the conversion charts generally hold true most of the time for most people.
UK12 = US13 = EU47
UK13 - US14 = EU48.5
The OP may need a 49, but you shouldn't. If you really are a UK12 then almost all EU49 would be too big. Have you had your feet properly measured?
The only brand I have personally seen *so far* out of whack were Millet Everest boots (in which I needed a 49.5 for a 47 foot).