Quilt Backing Calculator

Find the backing yardage for your quilt with standard or 108-inch wide-back fabric, and the best seam direction.

Quilt width (in) Quilt length (in) Backing fabric42/44 in quilting cotton (42 in usable)108 in wide-back (106 in usable) Overhang per side (in) Calculate

How it works

The backing is cut larger than the quilt top on every side (4 inches by default, which most longarm quilters ask for). The calculator works out how many fabric widths you need sewn together with the seams running down the length or across the width, and shows whichever uses less fabric. Ask your longarm quilter if they need more overhang.

Step-by-step explanation: How Much Backing Fabric Do I Need?

Want to keep your numbers? The Quilt Planner has worksheets for every project.