Quilt math · Calculator
Standard quilt sizes: crib to king
How big to make a quilt for each bed, and how to work out a size for your own: the mattress, plus the drop over the sides, plus a pillow tuck.
The short answer
Crib 36″ × 48″, throw 60″ × 72″, twin 66″ × 90″, full 80″ × 90″, queen 90″ × 96″, and king 108″ × 108″. For your own bed, take the mattress plus the drop on each side: a queen with a 12″ drop and a 10″ pillow tuck is 84″ × 102″.
Quilt size chart
The sizes most patterns and Quarter Inch start from. A bed quilt’s size is the mattress plus the drop over each side, so the last two columns show how each sits on the bed it’s named for.
| Quilt | Finished size | For | Over each side | Longer than the mattress |
|---|---|---|---|---|
| Crib | 36″ × 48″ | A crib, a play mat or a wall | 4⅜″ | — |
| Throw | 60″ × 72″ | A sofa or a lap | — | — |
| Twin | 66″ × 90″ | A twin bed | 14″ | 15″ |
| Full | 80″ × 90″ | A full (double) bed | 13″ | 15″ |
| Queen | 90″ × 96″ | A queen bed | 15″ | 16″ |
| King | 108″ × 108″ | A king bed | 16″ | 28″ |
Patterns vary by a few inches, and so do beds. To fit your own, start from the mattress, below. A crib quilt is bigger than a crib mattress: it’s made for the floor, the wall or a toddler’s bed.
Mattress sizes
Common US mattress sizes. Makers vary by an inch or so, so measure yours when the fit matters.
| Mattress | Width × length |
|---|---|
| Crib | At least 27¼″ × 51¼″ |
| Twin | 38″ × 75″ |
| Twin XL | 38″ × 80″ |
| Full | 54″ × 75″ |
| Queen | 60″ × 80″ |
| King | 76″ × 80″ |
| California king | 72″ × 84″ |
From your mattress
Free · no accountQueen mattress 60″ × 80″
+ 12″ each side and at the foot, + 10″ tuck
60″ + 2 × 12″ across; 80″ + 12″ + 10″ long.
90″ × 96″: 6″ wider and 6″ shorter.
4″ more on every side, to baste and quilt.
Quarter Inch fits whole blocks to the size you give it, and tells you how close it lands.
Start a 84″ × 102″ quiltMattress + 2 drops across · + drop and pillow tuck along · eighths of an inch throughout
Drop and pillow tuck
The drop is how far the quilt hangs past the top edge of the mattress. Measure it with a tape from the top edge down to where you want the quilt to stop:
- To cover the mattress (a coverlet): the mattress depth, which runs from about 8″ to 16″ for a pillow top. Add an inch or two so the edge doesn’t ride up.
- Past the box spring: the mattress and the box spring or foundation together.
- To the floor (a bedspread): from the top of the mattress to the floor.
The pillow tuck is extra length at the head that folds under the pillows and back over them. Leave it out if the quilt stops below the pillows. A footboard means no drop at the foot: the quilt tucks in.
Finished size, not cut size. These are the sizes once the quilt is sewn and bound. Blocks and borders are cut bigger to allow for seams: see finished vs unfinished size.
From a size to fabric
Once you know the size, work out the fabric: how much fabric for a quilt, the backing, the batting and the binding. For the queen in the chart, the drop is 15″ each side.
Questions
Short answers.
Something else? A real person replies.
hello@quarterinch.app
What size is a queen quilt?
90″ × 96″, for a 60″ × 80″ queen mattress: 15″ over each side.
What size is a king quilt?
108″ × 108″, for a 76″ × 80″ king mattress.
What size is a throw quilt?
About 60″ × 72″: big enough to curl up under on a sofa.
What size is a baby quilt?
A crib quilt is about 36″ × 48″. Keep quilts out of a baby’s sleep space: use it for play, the wall or a toddler’s bed.
How do I work out the size for my bed?
Measure the mattress, then add the drop to each side and the foot, and a pillow tuck at the head if you want one. The calculator does it for you.
Sources
We checked every fact above against these pages on , and we update this guide when they change. Spotted something out of date? Write to hello@quarterinch.app.
- Mattress Size Dimensions Guide Nectar Sleep
- Mattress Sizes Chart and Dimensions Guide Amerisleep
- Full-Size Baby Cribs (FAQ) US Consumer Product Safety Commission
- Safe Sleep: Cribs and Infant Products US Consumer Product Safety Commission