So, there is no tool which can integrate a folder size column in windows explorer in windows 7 and vista, but still there are some other alternatives to find out large sized folder on your computer hard drive. When it comes to hard disk space we always want to know which folders on our hard drives are taking the larger space, but windows explorer by default does not display the folder size, however there has been a tool released some time back called Folder Size which adds an extra column in windows explorer which displays the folder size but it work with windows XP only
