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Folder Size for Windows adds a new column to the Details view in Windows Explorer.
![folder size program folder size program](https://www.folder-size-explorer.com/images/fse-win10-ss.png)
The new column shows not only the size of files, but also the size of folders.
![folder size program folder size program](https://www.4winkey.com/images/article/windows-10/open-folder-options-in-windows-10.jpg)
When Folder Size detects that other programs are doing a lot of reading to and writing from the hard disk being scanned, the background scanning will wait for the other programs to finish.
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