I fold all fabric over 1 yard this way: fold lengthwise, selvedges together. Smooth it and fold again with fold to selvedges. Take the long piece and fold it back and forth, accordion style, in 18" lengths. This gives you a stack that is about 11" x18". You know at a glance exactly how much fabric you have. Count the folds at one end and each one is 1yard. If you need to the whole stack an be folded in half and stored on shelves.
I have awhile folding system I read about years ago. Will try to post it with pix.