What size should your quilt be? A baby gift, a sofa throw, and a bed quilt need different kinds of planning. Even two quilts labeled “Queen” can have different measurements because one covers only the mattress while the other hangs farther down the sides.
This quilt sizes chart gives you practical examples in inches and centimeters, followed by a way to calculate your own size. You will also learn how mattress dimensions, pillow coverage, block size, and quilting allowances affect the result.
Quick Navigation
- Baby-to-King quilt size chart
- Mattress sizes versus quilt sizes
- How to measure your bed
- Quilt size formula and examples
- Block counts and border planning
- Batting and backing size
- Frequently asked questions
Quilt Sizes Chart: Baby, Lap, Throw, Twin, Queen, and King
Use these examples to compare projects and estimate coverage. The bed-quilt examples do not include a pillow tuck. The coverage notes explain the assumptions behind each bed size so you can adjust them for a deeper mattress or a different drop.
| Quilt / project | Planning size — inches | Approx. size — centimeters | Coverage / use |
|---|---|---|---|
| Baby gift / supervised play mat | 36 × 48 in | 91.4 × 121.9 cm | Small project example; not based on mattress drop |
| Lap quilt | 48 × 60 in | 121.9 × 152.4 cm | A compact covering; check the recipient’s needs |
| Throw quilt | 60 × 72 in | 152.4 × 182.9 cm | A larger sofa or lounge quilt |
| Large throw | 66 × 84 in | 167.6 × 213.4 cm | Extra length for a taller recipient |
| Twin | 70 × 90 in | 177.8 × 228.6 cm | About 16 in at each side and 15 in at the foot of a 38 × 75 in mattress |
| Twin XL | 70 × 96 in | 177.8 × 243.8 cm | About 16 in at each side and foot of a 38 × 80 in mattress |
| Full / Double | 84 × 90 in | 213.4 × 228.6 cm | About 15 in at each side and foot of a 54 × 75 in mattress |
| Queen | 90 × 96 in | 228.6 × 243.8 cm | 15 in at each side and 16 in at the foot of a 60 × 80 in mattress |
| King | 108 × 96 in | 274.3 × 243.8 cm | 16 in at each side and foot of a 76 × 80 in mattress |
| California King | 104 × 100 in | 264.2 × 254.0 cm | 16 in at each side and foot of a 72 × 84 in mattress |
Metric figures use 1 inch = 2.54 cm and are rounded to one decimal place. The examples are target project dimensions, not fabric-cutting dimensions, and they do not automatically allow for washing or quilting shrinkage.
Choosing a Baby, Lap, or Throw Quilt Size
Baby gift or play-mat project
A 36 × 48-inch example makes a compact rectangular project that is easy to compare with a pattern. You could also choose a square design if it suits the intended use. A baby quilt does not need to be calculated as a miniature bedspread: decide what the recipient will use it for before choosing the size.
The baby entry describes a project such as a gift or supervised play mat, not a recommendation to add loose bedding to an infant’s sleep space.
Lap quilt
A 48 × 60-inch lap quilt is smaller than the throw example in this chart. Check the person’s height and whether they want it over their knees or wrapped around their shoulders. If it will be used while seated, consider where the corners will fall rather than choosing a size by name alone.
Throw quilt
A 60 × 72-inch throw gives you more room to cover the legs while relaxing. The 66 × 84-inch large-throw example adds both width and length. To decide between them, drape an existing blanket over the intended user and measure the coverage they actually want.
Mattress Sizes Are Not Quilt Sizes
A mattress chart describes the surface of the bed. A quilt usually needs additional fabric to hang over its edges. These nominal U.S. mattress dimensions are useful references, but manufacturing variations and regional naming conventions make direct measurement more reliable.
| U.S. mattress name | Nominal mattress size — inches | Approx. size — centimeters |
|---|---|---|
| Twin | 38 × 75 in | 96.5 × 190.5 cm |
| Twin XL | 38 × 80 in | 96.5 × 203.2 cm |
| Full / Double | 54 × 75 in | 137.2 × 190.5 cm |
| Queen | 60 × 80 in | 152.4 × 203.2 cm |
| King | 76 × 80 in | 193.0 × 203.2 cm |
| California King | 72 × 84 in | 182.9 × 213.4 cm |
Twin widths may be listed around 38–39 inches, and Full/Double widths around 53–54 inches depending on the maker or reference. This guide uses 38 inches for Twin and 54 inches for Full in its calculations. For a non-U.S. bed, use its measured dimensions instead of translating its name into a U.S. size.
Example: a 60 × 80-inch quilt would cover approximately the top of a nominal Queen mattress. It would not provide the 15-inch side drop shown in our 90 × 96-inch Queen example.
How to Measure a Bed for a Quilt
- Measure the mattress surface. Record width and length. Include a topper if it changes the shape or height you need to cover.
- Choose the side drop. With the bed dressed as it will normally be used, measure from the top edge down to where you want the quilt to end.
- Measure the foot drop. Decide how far the quilt should hang at the bottom. It can differ from the side drop, particularly with a footboard.
- Decide on top coverage. If the quilt starts at the head of the mattress without covering pillows, use zero extra top allowance. If you want a pillow tuck or another treatment, measure that extra fabric separately.
- Check the whole bed. Look for bed rails, drawers, a footboard, and floor clearance that could change the desired length or width.
Write down the measurements before choosing a pattern. A quilt that looks generous on a thin mattress can look short on a deeper one, even when both beds have the same nominal width and length.
How to Calculate Quilt Size
For a rectangular quilt with equal drops on the left and right, use:
Quilt width = mattress width + 2 × side drop
Quilt length = mattress length + foot drop + extra top allowance
This calculation assumes the top edge of the quilt reaches the head of the mattress before the extra allowance is added. If you prefer it to begin below the pillows, measure that shorter coverage length directly.
Queen quilt example: 90 × 96 inches
- Mattress: 60 × 80 inches.
- Side drop: 15 inches on each side.
- Foot drop: 16 inches.
- Extra top allowance: 0 inches.
Width: 60 + 15 + 15 = 90 inches.
Length: 80 + 16 = 96 inches.
The target is 90 × 96 inches, approximately 228.6 × 243.8 cm. If you decide to add a measured 12-inch pillow allowance, the length becomes 108 inches. That is a different quilt size, so adjust block and fabric plans accordingly.
King quilt example: 108 × 96 inches
For a 76 × 80-inch mattress with a 16-inch drop at the sides and foot, calculate 76 + 32 = 108 inches wide and 80 + 16 = 96 inches long. This is our King example, with no extra pillow allowance.
California King example: 104 × 100 inches
A nominal California King is narrower but longer than a standard King. Starting with 72 × 84 inches and adding 16-inch drops gives 104 × 100 inches. A King quilt is therefore not automatically the best fit for a California King just because its name sounds larger.
How Many Quilt Blocks Do You Need?
Use the finished block size for layout calculations. If a block finishes at 12 inches, it normally measures 12½ inches before it is sewn into the quilt with ¼-inch seams. Multiplying 12½ inches by every block overestimates the pieced area.
| Target example | 12-inch finished blocks | Block count | Border added to each edge — finished width |
|---|---|---|---|
| Baby: 36 × 48 in | 3 columns × 4 rows | 12 | None |
| Lap: 48 × 60 in | 4 columns × 5 rows | 20 | None |
| Throw: 60 × 72 in | 5 columns × 6 rows | 30 | None |
| Twin: 70 × 90 in | 5 columns × 7 rows | 35 | 5 in at left/right; 3 in at top/bottom |
| Queen: 90 × 96 in | 7 columns × 7 rows | 49 | 3 in at left/right; 6 in at top/bottom |
| King: 108 × 96 in | 8 columns × 7 rows | 56 | 6 in on all four edges |
Queen check: seven 12-inch blocks make an 84-inch-wide center. Two 3-inch side borders bring the width to 90 inches. The same center is 84 inches long; two 6-inch borders bring the length to 96 inches.
The table uses finished-unit arithmetic. An unfinished top may measure ½ inch larger overall while its outer seam allowances are still present. Follow your pattern’s measurement convention, and measure the actual assembled center before cutting border lengths. For simple straight borders, add ½ inch to the intended finished strip width when cutting for ¼-inch seams.
To compare the effect of different arrangements, see our 12 Log Cabin quilt layouts. For another project with useful block-count examples, explore our Disappearing Nine Patch layouts.
Adding sashing to the calculation
Internal sashing goes between blocks, so a row of five blocks has four internal spaces. For a layout without an outer sashing frame:
Center width = columns × finished block width + (columns − 1) × finished sashing width
Center length = rows × finished block height + (rows − 1) × finished sashing width
For five columns and six rows of 12-inch blocks with 2-inch finished internal sashing, the center is 68 × 82 inches: 60 + 8 inches wide and 72 + 10 inches long. Add any outer frame and borders after that calculation.
Quilt Top, Batting, and Backing: Three Different Measurements
The quilt top is the pieced design. Batting and backing usually need extra room around it during quilting. Ask your longarm quilter for their requirements before buying; the required margin is not the same as the quilt’s drop over the bed.
For the examples below, assume 4 inches extra on every edge. That adds 8 inches to the measured top’s width and 8 inches to its length. This is a planning example, not a requirement for every machine or quilting service.
| Measured top — example | Backing/batting area with 4 in per edge | Approx. required area — centimeters |
|---|---|---|
| 36 × 48 in | 44 × 56 in | 111.8 × 142.2 cm |
| 60 × 72 in | 68 × 80 in | 172.7 × 203.2 cm |
| 70 × 90 in | 78 × 98 in | 198.1 × 248.9 cm |
| 90 × 96 in | 98 × 104 in | 248.9 × 264.2 cm |
| 108 × 96 in | 116 × 104 in | 294.6 × 264.2 cm |
| 104 × 100 in | 112 × 108 in | 284.5 × 274.3 cm |
Use the actual top measurement when preparing for quilting, including any difference between its planned finished size and its present outside measurement. The table gives overall backing area, not yardage: fabric width, seam allowances, and piecing direction still need to be considered.
Why a “Queen” batting package may not fit your Queen quilt
Package names are not a guarantee of the margin you need. For example, Hobbs Heirloom Premium 80/20 lists a Queen batt at 90 × 108 inches and a King batt at 120 × 120 inches.
If your actual top measures 90 × 96 inches and your quilter requests 4 inches around every edge, you need 98 × 104 inches. A 90 × 108-inch package is too narrow for that requirement, even though it is labeled Queen. A larger package or an appropriate cut from a roll would be needed.
Check the exact product label, not just the brand: different batting lines can have different dimensions. Compare both width and length, and account for the quilter’s requested margin.
Allowing for Quilting and Washing
Quilting can draw up the layers, and washing can change the final dimensions. The result depends on the fabrics, batting, stitch density, and care routine. Do not assume that a measured unquilted top will have exactly the same dimensions after finishing and washing.
If precise post-wash size matters, make and wash a representative sample using the same materials and quilting approach. Use the observed change for planning rather than treating one shrinkage percentage as universal.
Common Quilt-Sizing Mistakes
- Using the mattress measurement as the quilt measurement. That leaves no allowance for the sides or foot.
- Adding the side drop only once. A centered quilt needs the chosen drop on both sides, so double it in the width calculation.
- Adding a foot drop at both ends automatically. The length formula includes the foot drop once; any pillow or head allowance is a separate choice.
- Reading length × width as width × length. Mark the orientation before arranging blocks or cutting backing.
- Counting unfinished blocks. Use finished block sizes in the layout math, then follow the pattern for cutting and trimming.
- Buying batting by its size name alone. Check package dimensions against the actual top plus quilting allowances.
- Forgetting borders and sashing. Add them to the center’s dimensions rather than assuming the block count already includes them.
- Relying on a bed name across countries. A label such as King can refer to different mattress dimensions in different markets.
Quilt Sizes FAQ
What size should a Queen quilt be?
One practical example is 90 × 96 inches, which gives 15-inch side drops and a 16-inch foot drop on a nominal 60 × 80-inch mattress, without a pillow allowance. Use your measured bed and preferred coverage to decide whether you need a different size.
What size should a King quilt be?
The example in this guide is 108 × 96 inches. It provides 16-inch side and foot drops on a nominal 76 × 80-inch mattress. A deeper drop or pillow treatment requires additional size.
What is a good throw quilt size?
Start by comparing 60 × 72 inches with a larger 66 × 84-inch option. Measure the person and the coverage they want. A decorative sofa throw and a quilt meant to wrap around a tall adult do not have to share one size.
Is a Full quilt the same as a Queen quilt?
No. A nominal Full mattress is smaller than a Queen. In this guide, the Full example is 84 × 90 inches and the Queen example is 90 × 96 inches. Compare actual quilt dimensions and desired drop instead of relying on the label.
Is California King wider than King?
No. The nominal U.S. dimensions used here are 72 × 84 inches for California King and 76 × 80 inches for King. California King is longer and narrower.
How do I convert quilt inches to centimeters?
Multiply each dimension by 2.54. A 60 × 72-inch throw is 152.4 × 182.9 cm when rounded to one decimal. Divide centimeters by 2.54 to convert back to inches, and avoid rounding repeatedly during cutting calculations.
Does binding add inches to the quilt size?
Ordinary edge binding finishes the quilt edge; it is not a substitute for adding a border. Follow the pattern’s measurement convention and use piecing, sashing, or borders if you need a meaningful increase in coverage.
How much bigger should backing be than the quilt top?
Follow the requirements of your quilting method or service. With a 4-inch allowance on every edge, add 8 inches to each measured top dimension. Do not confuse that with adding only 4 inches to the width and length in total.
Sources and Measurement Notes
For further guidance, see American Patchwork & Quilting’s guide to measuring quilt sizes, the mattress references from Casper and American Patchwork & Quilting, APQS guidance on longarm backing margins, and the Hobbs Heirloom Premium 80/20 batting specifications.
The example quilt dimensions, coverage calculations, block counts, and metric conversions in this article were prepared for The Quilting Time. They are planning aids, not a reproduced commercial pattern or a promise of a particular post-wash measurement. Follow the latest pattern, product specifications, and your quilter’s preparation requirements.
