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How much backing for a baby size quilt?
Baby quilts need 2 1/2 to 2 3/4 yd of backing fabric, or 1 1/4 to 1 3/8 yd of 108″ wide backing. The most common baby size, 36″ × 52″, takes 2 1/2 yd.
Every baby size
| Quilt | 42″–44″ fabric | Seams | 108″ wide | Metric (110 cm) |
|---|---|---|---|---|
| 36 × 36 | 2 1/2 yd | 2 panels, vertical seam | 1 1/4 yd | 2.3 m |
| 36 × 52 | 2 1/2 yd | 2 panels, horizontal seam | 1 1/4 yd | 2.3 m |
| 40 × 40 | 2 3/4 yd | 2 panels, vertical seam | 1 3/8 yd | 2.5 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 baby size is yours?
Baby quilts are not made for a particular mattress, so sizes vary with the pattern. See the full quilt size chart for bed sizes. Same quilts: how much binding for a baby quilt, batting and all the fabric.
Questions quilters ask
How much backing do I need for a baby size quilt?
2 1/2 to 2 3/4 yd of 42-44 inch quilting cotton, depending on the size. A 36 x 52 inch baby quilt needs 2 1/2 yd (2 panels, horizontal seam), allowing 4 inches extra on every side for quilting.
How much 108 inch wide backing for a baby quilt?
1 1/4 to 1 3/8 yd. Every common baby size fits on one width of 108 inch backing, so there are no seams.
Which way should the seams run on a baby quilt backing?
For 36 x 52, horizontal seams take 2 1/2 yd and vertical seams take 3 3/8 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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