Full Size Quilt Dimensions and Fabric
Full quilt backing, calculated live
This is the backing calculator preloaded with the standard full quilt (84" x 90"). Adjust any number to match your actual quilt; the answer updates instantly.
You will need
Everything a full quilt needs
Fabric requirements for a 84" x 90" quilt, computed with the longarm standard of 4" overhang and 2 1/2" binding strips. Each row links to its calculator preloaded with these dimensions, ready to adjust.
| Supply | You need | Fine-tune it |
|---|---|---|
| Backing, 42" fabric | 7 3/4 yards (3 panels) | Backing calculator |
| Backing, 108" wide | 2 3/4 yards (1 panel) | Backing at 108" |
| Binding, 2 1/2" strips | 9 strips, 3/4 yard (358" of binding) | Binding calculator |
| Batting | 92" x 98" needed; buy King (120" x 120") | Batting calculator |
| Precuts (top only) | about 3 jelly rolls or 9 charm packs | Precut calculator |
The short answer
A full size (double) quilt is typically 84" x 90", fitting the 54" x 75" full mattress with a 15" drop. It takes 7 3/4 yards of 42" backing in three panels, a 3/4 yard of binding, and a king batting package. It is also the most nearly square of the bed sizes, which has design consequences worth knowing.
The guest room workhorse
Full beds rule guest rooms, kids' first big beds, and smaller bedrooms, which makes the full quilt the great utility player of bed quilts: made once, used by everyone who visits. The near-square 84" x 90" footprint means it also moonlights respectably on a queen for the casual look, sitting 6" narrower than the queen standard. Households have run decades on one good full quilt doing exactly this double duty.
Almost square: the design consequence
At 84" x 90", the full is within 6" of square, the closest of any bed size. Directional designs, medallion centers, and on-point settings that fight with strongly rectangular quilts sit comfortably here. The flip side: a design with an obvious top and bottom gains almost nothing from the shape, and a guest who makes the bed sideways will not be corrected by the quilt. If your pattern is symmetric, the full is its natural home.
Three panels or one: the backing decision sharpens
This is the size where pieced backing starts to feel like a second project: 92" of needed width means three panels of standard cotton and 7 3/4 yards of fabric, with two seams to manage on the longarm. The 108" wide alternative is a single panel at 2 3/4 yards. Price the two honestly at your shop and wide backing usually wins outright from the full size upward, before counting the seams you did not sew.
Full size quilt questions, answered
Yes, two names for the same 54" x 75" mattress; "double" is the older usage and persists in pattern books and overseas. If a vintage pattern says double bed quilt, this page's numbers are the ones it means, give or take the era's skimpier drops.
As a casual top layer, yes: it runs 6" narrower and 5" shorter than the queen standard, so the drop covers most of the mattress sides but not all. As the primary bedding on a queen it reads slightly underdressed. If the bed might upgrade to a queen soon, make the queen now; nobody complains about 6" of extra drape.
The 92" x 98" batting requirement clears the queen package's 90" width by 2" too many. The king package (120" x 120") is the first that covers it, and the substantial leftover is enough to bat an entire throw. Plan a small companion quilt from the trimmings and the king package stops feeling extravagant.
The near-square shape loves square grids: 12" blocks in a 6 x 6 grid with 2" sashing reach 82" x 82", and a 4" border lands at 90" square, a hair over standard in length and happily within range. Forty two 10" layer cake squares in a 6 x 7 grid plus a wide border also gets there with one precut.
The bottom line
Eighty four by ninety: the guest room standard, the most square of the bed sizes, the point where wide backing starts winning the price war, and another quilt that ignores its own batting package name. Build it symmetric and let it serve every bed in the house.