Convert SQL server DateTime stored in UTC to system DateTime

gistfile1.sql

DECLARE @offset int 
SET @offset = DATEDIFF(hh, GetDate(), GETUTCDATE());

SELECT GetDate() AS 'System DateTime'
  , GETUTCDATE() AS 'UTC DateTime'
  , @offset AS 'OffSet'
  , DateAdd(hh, @offset, GetDate()) AS 'System converted to UTC'
  , DateAdd(hh, @offset*-1, GetUtcDate()) AS 'UTC Converted to System'