Short answer: measure your mattress width and depth, add twice the depth to the width, and pick the quilt closest to that number. Bed-size names alone are not reliable enough.
| Size | Quilt measures | From | Best on |
|---|---|---|---|
| Single | 59" x 70" | $99.99 | a single bed, a day bed, or as a throw over a larger bed |
| Twin | 69" x 90" | $119.99 | a twin mattress with enough length to tuck under the foot |
| Queen | 90" x 90" | $149.99 | a queen mattress with an even drop on both sides |
| King | 104" x 94" | $159.99 | a king mattress, and the widest drop in the range |
Why the mattress name is not enough
Two queen mattresses can differ by six inches in depth once you add a pillow top or a topper. Width is standardised; depth is not. A quilt that looked right in the listing can end up sitting flat on top of a deep mattress with almost no drop down the sides.
So measure. Width across the mattress, then depth from the top surface to the bottom of the mattress. The quilt needs the mattress width plus roughly twice the depth to hang evenly on both sides.
Worked example
A queen mattress 60" wide and 12" deep needs about 60 + 24 = 84" of quilt width for an even drop. The 90" Queen gives you 84" plus a little slack, which is what you want. On a 16" pillow-top mattress the same maths asks for 92" — that is where people size up to King even though the mattress is a queen.
When you are between two sizes
Size up. A quilt that is slightly too large drapes; a quilt that is slightly too small rides up and leaves shoulders uncovered on whoever loses the nightly tug of war. The cost difference between sizes is smaller than the cost of replacing the wrong one.
A note on Single
Single measures 59" x 70", which is shorter than a twin mattress. It suits a single or day bed, a child's bed, or use as a throw layered over a larger bed. If you want full coverage on a standard twin, Twin is the size to choose.
What you are measuring for
Every size listed here is the quilt itself — the filled top layer. The two pillow shams that complete the set are standard sham size regardless of which quilt size you pick. What comes in a 3-piece set covers that in full.
Browse quilted bedding sets in every size
Why the same bed name means two different beds
Bed-size names are national conventions, not measurements. A UK Single and a US Twin are close but not identical; a European Queen and a US Queen are further apart than the shared word suggests. Buying by name across borders is how a quilt ends up eight centimetres short on one side.
The fix is to stop trusting the name. Measure the mattress width and depth in centimetres or inches, add twice the depth to the width, and compare that number to the quilt dimensions listed on the product page. The number does not care what the bed is called.
Toppers, and the drop nobody accounts for
A mattress topper adds five to eight centimetres of depth, and depth is the measurement that eats the drop on each side. A Queen quilt that hangs correctly on a 25 cm mattress will look undersized on the same mattress with a topper — not because the quilt changed, but because the bed got taller.
If you use a topper, or think you might, size up. Between two sizes the larger one hangs lower, which reads as generous. The smaller one exposes the mattress edge, which reads as a mistake.
A worked example
Take a Queen mattress 152 cm wide and 30 cm deep. Width plus twice the depth is 152 + 60 = 212 cm. A quilt listed at 229 cm wide gives roughly 8 cm of extra drop on each side, which is right — enough to cover the mattress edge and a little more.
Now add a 6 cm topper. Depth becomes 36 cm and the number becomes 224 cm, which leaves almost nothing spare. Same bed, same quilt, and the difference between looking generous and looking tight is one topper. This is the arithmetic that bed-size names hide.
Bunk beds, daybeds and trundles
Three beds that break the usual rules. A bunk needs the smallest sensible drop — a Twin quilt on a top bunk that hangs to the floor is a hazard and a nuisance, so many households size down to Single there. A daybed is used as a sofa by day, so the quilt should clear the seat rather than pool: measure from the top of the mattress to just below the frame and choose the size closest to that, not the size the mattress is called. Trundles want two identical smaller sets rather than one large one, since the point is that they separate.
Related guides
Three that answer the question next to this one:
- What comes in a 3-piece set — one quilt, two shams, no sheets.
- Bedding gifts for couples — sizing a gift when you cannot ask.
- Getting the guest room ready — the sizes spare beds actually are.
Common questions
What if I am between two sizes? Take the larger one. It hangs lower, which reads as generous. The smaller one exposes the mattress edge, which reads as a mistake.
Do all four sizes cost the same? No. Prices start at $99.99 for Single and rise with size, and every design is available in all four.
Is a Twin quilt too big for a Single bed? Slightly larger, and most people prefer it — the extra drop covers the mattress edge more completely.