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How much backing for a full size quilt?
Full quilts need 7 3/8 to 7 7/8 yd of backing fabric, or 2 1/2 to 3 yd of 108″ wide backing. The most common full size, 84″ × 90″, takes 7 3/4 yd.
Every full size
| Quilt | 42″–44″ fabric | Seams | 108″ wide | Metric (110 cm) |
|---|---|---|---|---|
| 80 × 90 | 7 3/8 yd | 3 panels, horizontal seams | 2 1/2 yd | 6.8 m |
| 84 × 90 | 7 3/4 yd | 3 panels, horizontal seams | 2 5/8 yd | 7.1 m |
| 86 × 100 | 7 7/8 yd | 3 panels, horizontal seams | 3 yd | 7.2 m |
Each size allows 4″ extra on every side for quilting (most long-arm quilters ask for 4″–6″) and about 40″ of usable width from 42″–44″ cotton. Open a size for the step-by-step math and other overhangs.
Which full size is yours?
Sizes depend on the mattress and how far you want the quilt to hang. See what size quilt for a full bed for every drop, or the full quilt size chart. Same quilts: how much binding for a full quilt, batting and all the fabric.
Questions quilters ask
How much backing do I need for a full size quilt?
7 3/8 to 7 7/8 yd of 42-44 inch quilting cotton, depending on the size. A 84 x 90 inch full quilt needs 7 3/4 yd (3 panels, horizontal seams), allowing 4 inches extra on every side for quilting.
How much 108 inch wide backing for a full quilt?
2 1/2 to 3 yd. Every common full size fits on one width of 108 inch backing, so there are no seams.
Which way should the seams run on a full quilt backing?
For 84 x 90, horizontal seams take 7 3/4 yd and vertical seams take 8 1/4 yd. Work out both: the cheaper direction depends on the quilt's width and length.
Try your own numbers
Updated 2026-11-14. How we calculate.
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