Get Folder Size from Windows Command Line

Question

Is it possible in Windows to get a folder\'s size from the command line without using any 3rd party tool?

I want the same result as you would get when right clicking

Answer 1

The following script can be used to fetch and accumulate the size of each file under a given folder.
The folder path %folder% can be given as an argument to this script (%1).
Ultimately, the results is held in the parameter %filesize%

@echo off
SET count=1
SET foldersize=0
FOR /f "tokens=*" %%F IN ('dir /s/b %folder%') DO (call :calcAccSize "%%F")
echo %filesize%
GOTO :eof

:calcAccSize
 REM echo %count%:%1
 REM set /a count+=1
 set /a foldersize+=%~z1
 GOTO :eof

Note: The method calcAccSize can also print the content of the folder (commented in the example above)