Welcome from NM. It is hard to say exactly how much fabric you need without a pattern. Generally, determine how much fabric you would need without any pattern-queen size probably a minimum of 6 yards and then add more. So a queen size quilt would probably take 8 or 9 yds total. Of course the amount of each fabric used can only be determined by looking at the pattern but to get a ballpark amount and price I do a quick calculation using the above method.