Converting it into units for hospital, perhaps (11)
I believe the answer is:
'hospital perhaps' is the definition.
(I know that hospital is a type of Institution)
'converting it into units' is the wordplay.
'converting' is an anagram indicator.
'itintounits' with letters rearranged gives 'INSTITUTION'.
'for' acts as a link.
(Other definitions for institution that I've seen before include "Established practice" , "residential home" , "Special needs hospital" , "Established law or custom" , "Large organisation; established custom" .)