Just do a rough calculation before you start cutting so that you are sure you have enough fabric. Not all kits are cut or put together by the same person. In the two Craftsy kits I ordered, the amount listed was exact to the 1/4 inch. I was lucky that I did not have to straighten the fabric because I needed every single inch of it. No extras at all. It would be a shame to get to the last row of squares to be cut and realize you are short by an inch or so.