Or if you'd like a scripting approach try the attached file, this is set to check the size of all folders in the Recycle bin on the System Drive (usually C:\$Recycle.Bin) as well as the size of the bin itself.
1. Open a command Prompt as Administrator
2. Change Directory to where the script is stored (e.g. CD "C:\my scripts")
3. Run the script
- To view on screen type cscript foldersizeB.vbs
- To view in a text file type cscript foldersizeB.vbs >Recycle.txt && Recycle.txt
There are three scripts included in the zip file for Bytes, KB, & MB, just change the script name (from foldersizeB, to foldersizeKB, or foldersizeMB) in your CMD for whichever suits.