True size of a directory

True size of a directory

One of the quickest ways to find out the size of a directory (or a folder) -- including the size of the files and directories inside it -- is to press ALT+ENTER on it.
For example, to find out how much space your Windows directory is occupying:
Run "Windows Explorer"
Select "C:\Windows" (or whatever your Windows directory is)
Press ALT+ENTER or right click and select "Properties..."