Paper Princess is correct. There is NO specific size that is queen since different size blocks produce different sizes of quilts. Take a tape measure and get an estimation of the size of quilt you want. Then find out how the finished size of 8" will divide into your measurements. Easy to calculate your fabric. Unfortunately there will be waste if you use the 9" square because most fabrics are 42" wide so you will only get FOUR 9" squares from a 1/4 yard of fabric thus producing 8 HST. Count the number of HST you need for your quilt divided by 8. Then that number will tell you how many quarter of a yard you will need to buy. Remember that four 9" will equal a yard of fabric. This design uses 8" finished blocks and should measure 90"x106". Hope this helps!