Hi All
Is there any way of finding the total size of a website like kb, mb etc.
Download it all with a program like httrack and see how much you've got?
That probably won't reflect the amount of space it takes on the server - you'll have all the standard template data on each page, rather than once, and there may well be data that isn't visible from the front end (such as admin screens), as well as content which is downloaded from other sites embedded within your target site (Google Analytics code, for example).
If you've got server access, take a look at the du command to get a better estimate, but that won't reflect how much data would be transferred when accessing the site.