How Much Batting for a Twin XL Quilt?

Batting comes in a handful of precut sizes, and twin XL sits just past the point where the twin package stops working. The answer to how much batting for a twin XL quilt is a 78 by 103 inch cut — 3 yards off a 90-inch roll, or a queen precut if you would rather not measure.

What Size Is a Twin XL Quilt Top

A twin XL mattress is 38 by 80 inches — twin width, five extra inches of length, which is why dorms and adjustable beds use it. The matching quilt top finishes at 70 by 95 inches. Batting is measured against the top, not the mattress: the layers are basted as one sandwich, so the batting only has to beat the quilt.

Step 1: Add Batting Overage

Plan 4 inches of overage per side so the machine can hold the edges while quilting:

• Batting width = 70 + (4 × 2) = 78 inches
• Batting length = 95 + (4 × 2) = 103 inches

That is a 78 by 103 inch rectangle. Longarm quilters usually want 6 to 8 inches per side, which makes the cut 82 by 107 or 86 by 111 inches — worth confirming before the batting is trimmed, because the numbers below change with it.

Step 2: Why the Twin Precut Is Out

On a regular twin, a 72 by 90 inch precut is tight but workable. On a twin XL it does not just fit badly — it fails. It is 5 inches shorter than the 70 by 95 top and 13 inches shorter than the 103-inch cut the overage rule wants, and no basting technique recovers 13 inches.

Twin XL Batting Reference Table

The cut grows with the top, but the yardage only moves when the length crosses a quarter-yard line.

Two rows deserve a second look. A queen precut suits every standard twin XL, but at 8 inches of longarm overage the cut becomes 86 by 111 and the queen precut is three inches short. On the generous 81 by 111 top, even a king precut leaves half an inch at each end — cut from a roll.

Cutting From a Roll: Two Orientations

A 90-inch roll is the standard width, and 78 inches fits across it, so you buy length instead: 103 inches, or 2.86 yards, which rounds to 3 yards. The leftover 12-inch strip is only good for a table runner or a practice sandwich. If your shop carries a 120-inch king roll of the same loft, rotate the cut: 103 inches fits inside the 120-inch width, so you only need 78 inches of length — 2.25 yards, three quarters of a yard saved. Needle-punched cotton and poly battings have no direction, so turning the cut is safe; a scrim-backed or intentionally directional batting should stay on the grain.

The five extra inches behave differently than you would guess. A regular twin's 98-inch cut fits inside 2.75 yards (99 inches) by one inch; 103 inches does not, which is why twin XL batting lands on 3 yards. At 6 inches of overage the 107-inch cut still squeezes into 3 yards at 2.97; only the 8-inch rule at 111 inches forces 3.25 yards.

Frequently Asked Questions