Command to view folder subfolder and its capacity

Can any one tell how to view folder and subfolder with its capacity
df -k will cannot be used it shows only the parent folder
while du -k will show all subfolder and files but not show the capacity and also i dont want view any files

Thank you!!!!

A folder has so much capacity left as the filesystem has, it is on. So df on the directory you want to know will show the free capacity left for the filesystem and so with all of the directories that belong to that filesystem.