How Much Batting for a Crib Quilt
A crib quilt finishes at 36" × 52", so the batting needs to be about 44" × 60" once you add the standard 4 inches of overage per side. That happens to be almost exactly the size of a crib precut batt, which sounds convenient until you look at the numbers closely. Here is the real math, plus when to size up.
Batting Cut Size by Overage
Batting is cut oversized because the layers creep during quilting. The top always travels slightly relative to the backing, and the edges are the first thing to run short. Four inches per side is the planning default for a small quilt; longarm quilters often want 6 to 8. Multiply the overage by two and add it to each dimension of the 36" × 52" top:
| Overage per side | Batting cut size | Smallest precut that works |
|---|---|---|
| 2" | 40 × 56 | Crib 45 × 60 |
| 3" | 42 × 58 | Crib 45 × 60 |
| 4" (default) | 44 × 60 | Crib 45 × 60, exact fit |
| 6" (longarm) | 48 × 64 | Twin 72 × 90 |
| 8" (longarm) | 52 × 68 | Twin 72 × 90 |
The jump from crib to twin at 6 inches of overage is abrupt because nothing is sold in between. If your quilter asked for 6 inches per side, do not try to stretch the crib batt: buy the twin, cut what you need, and keep the offcut.
Precut Options Compared
Four packaged sizes are commonly on the shelf, and only two of them are useful here. This table shows what each one actually leaves you on a 36" × 52" crib quilt:
| Precut | Size | Overage you get | Leftover |
|---|---|---|---|
| Craft | 36 × 46 | Too small — 6" short in length | None |
| Crib | 45 × 60 | 4.5" sides, 4" ends | None |
| Twin | 72 × 90 | 18" sides, 19" ends | 28 × 90 strip |
| Queen | 90 × 108 | 27" sides, 28" ends | 46 × 108 piece |
Buying batting off the bolt is often cheaper per square inch than precuts if your shop sells it by the yard. From a 96-inch wide roll, a 1.75-yard cut gives you a 96" × 63" piece. Trim your 44" × 60" batt from one end and you still have a 52" × 63" remnant, which is enough for a second baby quilt at 36" × 45" plus overage.
Choosing Fiber and Loft for a Crib Quilt
A crib quilt gets washed far more often than a bed quilt, so durability under laundering matters more than warmth. Low loft keeps the quilt light and easy to drape over a car seat or stroller. These are typical manufacturer figures — always confirm against the label on the batt you buy, since specifications vary by brand:
| Fiber | Max quilting distance | Shrinkage | Fit for a crib quilt |
|---|---|---|---|
| 100% cotton, low loft | 8–10" | 3–5% | Excellent — breathable, soft crinkle after washing |
| 80/20 cotton-poly | 4–8" | 2–3% | Excellent — holds shape, less shrink than pure cotton |
| 100% polyester, low loft | 3–5" | 0% | Good — warm and cheap, but needs dense quilting |
| Bamboo blend | 6–8" | 2–3% | Good — very soft drape, higher cost |
| Wool | 3–4" | 1–3% | Poor fit — usually hand wash only |
One practical note on shrinkage: if you use unwashed 100 percent cotton batting with prewashed fabric, the quilt will pull in 3 to 5 percent on its first wash. On a 36" × 52" crib quilt that is roughly 1 to 2.5 inches in each direction, which produces the antique crinkle many quilters want. If you would rather keep the finished measurement exact, choose an 80/20 blend or prewash the batt. Run your own numbers through the batting calculator before you buy.
Frequently Asked Questions
How much batting do I need for a crib quilt?
A standard 36 by 52 inch crib quilt needs a batting cut of about 44 by 60 inches, which is 4 inches of overage on every side. One crib size precut at 45 by 60 inches covers that exactly. If you buy batting off the bolt at 96 inches wide, cut 1.75 yards, which is 63 inches, and you will have a large leftover piece for another project.
Will a crib size precut batting fit a 36 by 52 inch quilt?
Yes, but only just. A crib precut measures 45 by 60 inches, so it gives 4.5 inches of overage on each long side and exactly 4 inches on each end. There is no slack, so if your top finished even an inch longer than planned, or if the batt shifts during basting, move up to a twin precut instead.
Can I use craft size batting for a crib quilt?
No. Craft precuts measure about 36 by 46 inches, which is smaller than the 36 by 52 inch quilt top itself. Craft batting is sized for baby quilts, table runners, and wall hangings. For a crib quilt you need at least a crib precut at 45 by 60 inches.
What batting is best for a crib quilt?
A low loft 100 percent cotton or an 80/20 cotton-polyester blend is the usual choice. Both are breathable, machine washable, and lie flat enough for a toddler to crawl on. Avoid high loft polyester for a crib quilt because the extra puff makes the quilt heavier to handle and harder to quilt densely on a domestic machine.
How far apart can I quilt a crib quilt?
Follow the maximum quilting distance printed on the batting label. Needle-punched cotton usually allows 8 to 10 inches, an 80/20 blend 4 to 8 inches, and low loft polyester 3 to 5 inches. Because a crib quilt is washed frequently, quilting closer than the maximum helps the batt survive repeated laundering.