Quiltler’s twin quilt is 70 by 90 inches in the quilt sizes guide. Batting should clear the top on every side so you can quilt without stitching off the batt. Four inches each way is the domestic default on Quiltler’s calculators: 78 by 98. Compare that rectangle to shop labels:
- Twin packages around 72 by 90 sit inside the top-plus-overhang rectangle. They are for a smaller quilt or for almost no extra.
- Full packages around 81 by 96 cover the width, then fail the 98 inch length by a couple of inches.
- Queen packages around 90 by 108 usually swallow 78 by 98. That is the honest “twin quilt batting” buy when you use Quiltler’s twin size and 4 inches extra.
Open the free quilt batting calculator, type 70 and 90, and set overhang to match your quilter. The card names the smallest standard package that fits. Backing for the same quilt is how much backing for a twin quilt. Design the top in the twin quilt designer. Queen batting is a different mismatch — see how much batting for a queen quilt.