Full Quilt Size Guide

A full quilt measures 84 by 90 inches and sits on the narrowest of the big beds. A full mattress is 54 inches wide, only 16 inches wider than a twin, which is why the drop is easier to misjudge here than on a queen. That single number also changes what you buy for every layer.

Standard Full Quilt Size

A full mattress, also sold as a double, measures 54 by 75 inches. The standard quilt for it is 84 by 90 inches: 54 inches of mattress plus 15 inches of drop on each side, and 75 inches of mattress plus 15 inches at the foot. That is why a full quilt looks almost square. Width and length differ by 6 inches, against 18 inches on a queen.

What a Full Quilt Needs, Piece by Piece

The size is the easy part. The shopping list is where a full quilt surprises people, because 84 inches is wider than two widths of standard fabric but shorter than a twin XL, and those two facts pull the numbers in opposite directions.

Read the third row twice. The smaller full quilt needs less wide backing than the taller twin XL, because wide backing is bought by length and a full quilt is 5 inches shorter. Width is not what you pay for.

Top Fabric and Backing Math

A grid of 5 inch finished squares is the usual starting point. An 84 by 90 top takes 17 columns and 18 rows, or 306 squares. Cut at 5.5 inches, seven squares fit across a 42 inch width, so you need 44 strips — 242 inches, or 6.75 yards. Sixteen columns plus a 2 inch border on each side is leaner: 288 squares, 42 strips, 6.5 yards.

Backing is cut 4 inches larger on every side, so the piece you need is 92 by 98 inches. Two 42 inch panels only reach 84 inches, so a full quilt takes three. Sew them with horizontal seams and each panel is 92 inches long, which is 276 inches or 7.75 yards. Rotate the seams and the panels run 98 inches each, which is 294 inches or 8.25 yards. Wide backing avoids the question entirely: 108 inch fabric covers the 92 inch cut, so you buy 98 inches, or 2.75 yards.

The Precut That Fails Its Own Size

Batting is the layer that goes wrong. The cut size is 92 by 98 inches, and the precut sold as full measures 81 by 96 — 11 inches narrow and 2 inches short of the quilt it is named for. The queen precut is longer than needed and still 2 inches too narrow. Only the king precut clears both directions, with 28 inches left to trim.

Binding: Nine Strips With Three Inches to Spare

Perimeter is (84 + 90) × 2 = 348 inches. Add 24 inches for joining the ends and mitring the corners for 372 inches, then divide by 42 inches of usable width. That is 8.9, so cut 9 strips at 2.5 inches — 22.5 inches of fabric, or 0.75 yard. Nine strips can cover up to 177 inches of width plus length, and the full quilt sits at 174, so it is one of the last sizes that fits. Add a 4 inch border all round and the quilt moves to 92 by 98, which pushes it to ten strips.

Frequently Asked Questions