Quilt Binding Width Guide
Choose strip width for straight-grain quilt binding and understand how strip width changes fabric requirements.
| Cut strip width | When to consider it | Check before cutting |
|---|---|---|
| 2 1/4 in | A narrower edge | Test the fold around your batting. |
| 2 1/2 in | A flexible starting point | Check coverage on both sides. |
| 2 3/4 in | A fuller edge or thicker sandwich | A wider strip increases yardage. |
Make a short sample using your fabric, batting and seam allowance. Cut width is not finished binding width. For a 60 × 80-inch quilt with 10 inches allowed for joins and overlap, 290 inches of binding requires seven 42-inch strips before join losses. At 2½ inches per strip, the calculator estimates 17.5 inches of fabric, rounded to ½ yard. Check that your total join loss and closing overlap fit the chosen allowance; increase it when needed.
Strip width controls the fabric requirement
Binding calculators multiply the number of width-of-fabric strips by the cut strip width. Wider binding therefore uses more fabric even when quilt perimeter is unchanged.
Straight grain and bias are different
The current YardageLab binding calculator models straight-grain width-of-fabric strips. Curves or projects that specifically require bias binding need a different cutting model.
Last reviewed: 2026-09-14. Measurements and construction practices vary; verify project-specific requirements before cutting expensive fabric.