Quilt size calculator
A queen size quilt is typically 90" x 95", but the right size for your bed depends on how far you want it to hang down. Pick your bed and drop below, get your exact quilt dimensions, and carry them straight into the backing, batting, and binding calculators with one tap.
Make your quilt
Standard quilt sizes at a glance
There is no law about quilt sizes, only conventions; these are the dimensions most patterns are built around. For the full chart with backing, binding, and batting requirements per size, see the complete quilt size chart.
| Quilt size | Typical quilt dimensions | Mattress it fits |
|---|---|---|
| Crib / baby | 36" x 52" | Crib (28" x 52") |
| Lap / throw | 50" x 65" | None (sofa duty) |
| Twin | 70" x 90" | Twin (38" x 75") |
| Twin XL | 70" x 95" | Twin XL (38" x 80") |
| Full / double | 84" x 90" | Full (54" x 75") |
| Queen | 90" x 95" | Queen (60" x 80") |
| King | 110" x 95" | King (76" x 80") |
| California King | 104" x 100" | Cal King (72" x 84") |
How quilt size is calculated from a mattress
The math is honest and simple: quilt width = mattress width + drop on both sides. Quilt length = mattress length + drop at the foot, plus about 10 inches if you want to tuck the quilt under the pillows. The drop is the design decision. Eight inches reads as a topper, twelve covers the mattress sides like a comforter, and twenty one sweeps to the floor like a proper bedspread.
Crib quilts are the exception: for safety, quilts are not used inside a crib with an infant, so a 36" x 52" crib quilt is sized for floor time and toddler beds rather than for drop over a crib mattress.
Sources and methodology
Mattress dimensions follow standard US bedding sizes (crib 28x52 through California King 72x84). Quilt width = mattress width + 2 x drop; length = mattress length + drop + 10" pillow tuck when selected. Chart dimensions reflect common quilt industry conventions; patterns vary by several inches and that is normal. Cross-checked against published quilting references before every update.
Quilt size questions, answered
Around 90" x 95" by convention, which gives a 60" x 80" queen mattress about 15 inches of drop on each side. If you sleep with someone who migrates with the covers, quilters have been known to make the king size on purpose.
Not at all. Blocks come in fixed sizes, so finished quilts land where the math of the blocks puts them. Anything within 3 or 4 inches of the chart will look intentional on the bed. The chart matters most when buying batting and backing, which is why the result above links straight into those calculators.
A coverlet hangs partway down, covering the mattress and stopping above the floor, usually a 12" to 16" drop. A bedspread goes nearly to the floor, about a 21" drop on a standard height bed. Bedspread drops add a surprising amount of fabric: on a queen, going from 12" to 21" adds 18 inches of width and 9 of length.
Around 50" x 65" suits most adults on a sofa; add length if anyone tall will be under it, since cold feet file the most complaints. Throws are not sized to a mattress, so make it any size that suits the person and the couch.