How do you calculate quilt backing?
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 wide are the strips in a jelly roll?
Each strip in a Jelly Roll is 2½ wide and its length comes from the full width of fabric or WOF for short. Generally, they are cut from standard bolts measuring 44-45 inches. Some of the more pedantic may think of it as a cut that runs from selvage to selvage of the fabric.
How much fabric do I need for a jelly roll?
As for yardage, there are 2.75 yards of fabric in a single Jelly Roll. Laid end to end as strips, one Jelly Roll measures approximately 1.680 inches – 140 feet – 46.5 yards.
How much bigger does quilt backing need to be?
The quilt backing needs to be larger than the quilt top to allow extra for fabric that is taken up during quilting and for stabilization when using a quilting frame. Always add 8″ to both the length and width measurements so you have an extra 4″ of fabric all around. Trim off the selvage of all backing fabrics.
How much fabric do I need for my quilt backing?
Take your backing length measurement and multiply it by the number of WOFs you need. 74″ x 2 = 148″ This is how many inches of fabric you need. Now, divide that number by 36″ to get how much yardage you need. Round up to the nearest ¼ yard and you get 4 ¼ yards.
What is a jelly roll in quilting terms?
A jelly roll is a pre-cut bundle of fabric, available at any fabric or craft store. … These strips are so convenient for quilts because much of the cutting and fabric-matching work has already been done for you!