GetFolderSize is a handy tool with which you can check the space that each folder takes in your hard drive – something that Windows Explorer doesn’t display that easily.
Using GetFolderSize is quite simple, though the first time you launch the program it may take you a while to find your way. All you need to do is select the drive you want to scan in the top left corner drop-down menu and click the arrow button on the side.
GetFolderSize will scan the selected drive and then display a list with all the folders and their correspondent size. If you click on any of these folders, the contents will be displayed on the right pane. The analysis can take a while, especially if you're working with large folders.
The list generated by GetFolderSize can be saved to TXT or CSV, and also printed. The app is also embedded with Windows Explorer, which means you can access it from any folder's context menu.
GetFolderSize scans an entire drive and displays the exact size for each folder and subfolder in that drive.