How many yards do I need for a queen size quilt backing?
A standard queen size quilt that is 88 inches wide and 96 inches long takes about 8 yards of fabric for the front of the quilt and another 8 yards of fabric for the back of the quilt, depending on the pattern and fabric you choose.
How much bigger should Backing be than quilt top?
Size of the back: must be at least 6″ wider on each side, top and bottom, than your quilt top. A total of 12″ larger than your quilt top. Trim the top and bottom edges of your backing so they are straight and square.