The Display of Each Folder Size in Windows Explorer
The size of the folder is a freeware that adds a new column to display the folders size along with files in your Windows Explorer. For XP and Vista.
When you open a folder inside Windows Explorer (Win + E), it will display the size of the individual files contained in that folder but you will not know about the size of the various sub-folders inside that folder. The same is true for Windows Explorer as well as XP, along with XP.
If you are worried about this limit, what you really need is Folder Size – a free utility that adds a new column to your Windows Explorer so that the size of the folders is displayed along with the files.
Folder size establishes a Windows service that scans your hard drive in the background, calculates folder sizes and caches these results, so in most cases the results are nearly instantaneous.
To add the Folder size column to Windows Explorer, right-click the column header so that you can see a list of columns and select “Folder size” and also uncheck the size column. You can drag the Folder size column header to the location where the shape was. Make it the default view for all folders.
Folder size is currently available for Windows 2000 and Windows XP, but the developer is close to releasing a new version that will also work with Windows Vista.