[need App] Generate Folder Sizes In Windows?

I have a directory of about 700+ folders that all contains various files in each (with a range of file sizes). I'm trying to find an empty folder, but I don't know which one it is.

In the "details" view of Windows Explorer, I try sorting by "size" but this column is not populated with data (unlike being able to sort it by "date created" etc).

Is there an app that I can point to my directory and have it give me a list of all the folders file sizes contained within? That should help me find the empty folder.

 

Treesize Free should help.

 

RED - Remove Empty Directories - but you don't have to remove them, it will list all empty dirs found, then there is a button to clean them.
https://www.jonasjohn.de/red.htm

 

RED worked great, thanks! Didn't get a chance to test Treesize but I'm sure it would have done the job as well. So thanks all!