USsize11representstheshoesizeintheUnitedStates,whichisapproximately28centimetersinlength,correspondingtoEuropeansize45.InChina,shoesizesarebasedoninternationalstandards,measuringthelengthofthefootincentimeters.TheshoesizecommonlymentionedreferstotheEuropeansize,alsoknownasthemetricsystem,whichistheuniversalshoesizesystemusedinEurope,exceptfortheUK,whichusestheimperialsystem.