How much fabric do I need to back a quilt?
Take the length of your quilt and double it, adding a half yard to your total. The extra half yard is allowance for shrinkage and uneven cutting. If you have a quilt top that is 70 inches per side, you need at least 140 (+18) inches for the back. Ideally you want this in one length, or two 79″ lengths.
How many yards of backing do I need for a queen quilt?
Typically, three horizontal strips of fabric are pieced together to cover a queen-size quilt. For example, if your finished quilt width with allowance is 126 inches, you need 3 1/2 yards of fabric to go across it.
Can you use muslin for quilt backing?
Traditionally muslin has been a popular choice for backing fabric. Even a high quality muslin fabric is less expensive than it’s printed fabric counterpart, and some quilt admirers prefer to be able to see the quilting stitches on the back, which muslin lends itself to.