Most of the ones that I have been purchasing recently have been 18x20 and then they shrink when I wash them and they end of being 17ish x 19ish. I do wash all my fabric before I use it. Yes, the new sizing of fabric bolts are causing problems especially when you try to use older patterns and charm squares, some are wonderful and don't shrink and others are already less than 5 inches square before I even think of washing them. Now, I am making my own from my stash of fabric that has already been washed.