Standard Twin XL Quilt Measurements

Twin XL measurements are the easiest of the bed sizes to get wrong, because the mattress is five inches longer than a twin but not an inch wider, and most published charts quietly recycle the twin numbers. Here are the exact figures, the drop arithmetic behind each one, and a tape measure method for checking a size against your own bed.

Twin XL Quilt Measurements by Size

The figure to work with is 70 by 95 inches. The rows on either side are the fallbacks: a leaner 58 by 90 for a dorm coverlet that sits on top of a duvet, and a generous 81 by 111 for a quilt that folds back over the pillows.

Side drop is half the difference between quilt width and the 38 inch mattress. Foot drop is quilt length minus the 80 inch mattress. The last row carries 31 inches of extra length because it is meant to be split between the foot of the bed and a fold over the pillows, not spent all in one place.

Where the 70 by 95 Figure Comes From

Two pieces of arithmetic produce it. Width has two sides of the bed to cover, so it is mattress width plus twice the drop: 38 + (2 × 16) = 70. Length drops off one end of the bed only, so it is mattress length plus a single drop: 80 + 15 = 95. Change the drop and the quilt changes with it.

The first row is the useful one. A 58 by 90 quilt is exactly what a 10 inch drop produces on a twin XL mattress, which tells you that the leanest number on the charts is not an arbitrary minimum but a measured coverlet. The 16 inch row lands on the same 70 inch width as the standard figure, confirming where the width comes from.

Why Charts Disagree by Five Inches

Three choices move the answer. How far you want the quilt to hang decides the drop, and drop alone can shift the width by a foot across the range above. Whether the quilt folds back over the pillows adds 10 to 20 inches to the length, which is the whole difference between 90 and 111. Mattress depth matters too, because a deep pillow top can be twice the thickness of an older mattress.

There is a fourth reason specific to twin XL. Most charts publish a twin quilt size of 70 by 90 inches and then list twin XL beside it using the same numbers, because the mattress widths match and nobody recalculated the length. Those charts are not wrong about the coverage, they are wrong about the drop: 90 inches gives 10 inches at the foot of a twin XL instead of the 15 inches the identical quilt gives at the foot of a twin. If your pattern was written for a twin, add five inches of length rather than five inches of width.

Measuring Your Own Twin XL Bed

Measure the bed made up the way you sleep in it, not the bare mattress. For width, add the drop you want twice to the mattress width. For length, add the foot drop plus any pillow tuck. A quilt reaching the rail on a 38 by 80 mattress reads 38 + 32 = 70 wide and 80 + 15 = 95 long, which is the standard size arrived at from the other direction. Feed that measurement into the quilt size calculator to turn it into a cut list before you shop.

Frequently Asked Questions