Quilting Precut Sizes

Precuts are the quilting world's convenience food: bundles of fabric already cut to a standard size, sold so you can start sewing without measuring and rotary-cutting a single piece. The trouble is that each format has its own name, its own piece size, and its own piece count, and the names give nothing away. A charm pack and a layer cake are both stacks of squares; a jelly roll and a honey bun are both rolls of strips. This guide lays the whole family side by side so you can see at a glance which bundle gives you what, and which one fits the project you have in mind.

The Precut Family at a Glance

Almost every precut on a fabric-shop shelf traces back to Moda Fabrics, which coined and trademarked the names: charm pack, jelly roll, layer cake, honey bun, dessert roll, and the mini-charm "Candy" format. Other manufacturers sell the same cut sizes under their own labels, so the dimensions below hold across brands even when the names change. Here is the core family, smallest piece to largest:

• Mini charm (Moda Candy): 2.5-inch squares, usually 42 to a pack.
• Charm pack: 5-inch squares, 42 to a pack in the Moda standard (some brands pack 40).
• Layer cake: 10-inch squares, 42 to a pack.
• Honey bun: 1.5-inch strips cut the full width of the fabric, 40 to a roll.
• Jelly roll: 2.5-inch strips cut the full width of the fabric, 40 to a roll (some brands 42).
• Dessert roll: 5-inch strips cut the full width of the fabric, 20 to a roll.
• Fat quarter: a single 18-by-22-inch rectangle, sold loose or bundled.

Two patterns fall out of that list. The squares (mini charm, charm, layer cake) double in size at each step, and the strips (honey bun, jelly roll, dessert roll) all run the full width of the fabric but differ in how wide they are cut. The fat quarter is the odd one out: not a bundle at all but a single reshaped cut, which is why it behaves differently from everything else here.

Charm Packs and Mini Charms

A charm pack is a stack of 5-inch squares, with the Moda standard holding 42 of them, typically one square from each print in a fabric collection and a few prints repeated when the collection runs short of 42. Some other manufacturers pack 40 instead, so the square size is the figure to trust; the count is worth checking on the band.

The mini charm, which Moda sells as "Candy", is the same idea at 2.5 inches square, again usually 42 pieces. Because the squares are so small, a mini charm holds only a little over a quarter-yard of fabric in total, which makes it a taster of a collection rather than enough to build much on its own.

What the two formats are good for differs with the square size:

• A single charm pack covers a small baby or stroller quilt with simple square piecing, since 42 five-inch squares finish at 4.5 inches each.
• Mini charms suit small pieced blocks, pincushions, and patchwork cushion fronts where a 2-inch finished square is the right scale.
• Both formats arrive pre-coordinated, so the colours are guaranteed to work together with no planning on your part.

To turn a target quilt size into a charm-pack count, the charm pack calculator works the squares-and-sashing maths for you, including the seam-allowance loss that takes every 5-inch square down to a 4.5-inch finish.

Layer Cakes: The Big Squares

A layer cake is the charm pack's larger sibling: 10-inch squares, again 42 to a Moda pack. The bigger square is the appeal. A layer cake holds roughly 2¾ yards of fabric by area, enough to make a real quilt rather than a taster, and the 10-inch piece covers ground quickly with far fewer seams than a charm quilt of the same size.

Layer cakes also sub-cut neatly. A single 10-inch square yields four 5-inch charm squares, or it can be trimmed into half-square triangles and other units with little waste, which is why pattern designers lean on them so heavily.

A layer cake suits a few project types particularly well:

• Throw and lap quilts built from whole 10-inch squares set straight or on point.
• Quilts that pair large-scale prints with the room to show them off, since the 10-inch square keeps a big motif intact.
• Designs that mix a layer cake with a coordinating jelly roll from the same collection for sashing or strips.

Because a layer cake and a charm pack share the 42-square count and a two-to-one size relationship, swapping between them in a pattern is mostly a matter of scaling the finished block, and our standard quilt sizes chart helps you check whether the result lands in lap, twin, or bed territory.

The Strip Family: Jelly Rolls, Honey Buns, and Dessert Rolls

The rolls are all strips cut across the full width of the fabric, selvedge to selvedge, roughly 42 to 44 inches long, and they differ only in how wide each strip is cut. The jelly roll is the famous one: 40 strips at 2.5 inches wide, the same 2.5 inches quilters cut for double-fold binding, which is why a leftover jelly roll doubles as a binding stash.

The honey bun is the slim version, cut at 1.5 inches wide with 40 strips to a roll. Narrower strips mean less total fabric than a jelly roll and a finer, more delicate result, which suits miniature piecing and doll quilts. The dessert roll runs the other way: 5-inch-wide strips, 20 to a roll, so it holds about as much fabric as a jelly roll but in half as many strips, each twice as wide.

The width of the strip decides what the roll is for:

• Jelly roll (2.5 inches): the standard for strip quilts and the jelly roll race, where every strip is joined end to end and folded into a top.
• Honey bun (1.5 inches): fine strip piecing, small-scale projects, and narrow accents.
• Dessert roll (5 inches): bold, wide-strip quilts that come together fast with very few seams.

If the rolls came first and you want to know what size quilt they will make, the jelly roll calculator works forward from the rolls in your hand, while the strip piecing calculator runs the other direction, from a target quilt size back to the number of strips you need.

Fat Quarters and Fat Eighths

A fat quarter is the one precut that is not a bundle. It is a quarter-yard of fabric cut to a fatter, more useful shape: instead of the long thin 9-by-44-inch strip you get from a standard quarter-yard cut off the bolt, a fat quarter is an 18-by-22-inch near-rectangle, made by cutting a half-yard piece in half along the fold. The same quarter-yard of fabric, in a far more cuttable shape.

The 22-inch measurement assumes a 44-inch bolt cut in half. Real quilting cotton is often nearer 42 inches usable, so many fat quarters measure closer to 18 by 21 inches, and manufacturers such as Robert Kaufman list them that way, a difference our standard fabric widths guide sets out in full. A fat eighth is the same trick applied to an eighth of a yard, most often cut at about 9 by 22 inches, squarer and more useful than the long, thin standard eighth-yard cut.

Fat quarters and fat eighths earn their keep where bundles do not:

• Scrappy quilts that want many different prints in small amounts rather than a single coordinated collection.
• Small projects such as bags, pouches, and cushion fronts, where 18 by 22 inches is exactly enough.
• Fussy cutting, where the near-square shape lets you position a motif that a thin strip would clip.

Fat-quarter bundles vary widely in count, anywhere from a handful to forty or more depending on the collection, so unlike the squares and rolls there is no single canonical number to expect.

How Much Fabric a Precut Really Holds

It helps to know roughly how much fabric each bundle represents, if only to judge whether a precut is good value against buying off the bolt. These are approximate area equivalents, drawn from published quilting references rather than a manufacturer spec sheet:

• A charm pack works out to around five-eighths of a yard of fabric.
• A jelly roll and a layer cake each come to roughly 2¾ yards.
• A mini charm holds a little over a quarter-yard.
• A fat quarter is, by definition, a quarter-yard of fabric.

Treat every one of these as an area figure, not a usable-yardage figure. A precut is already cut into fixed shapes, so you cannot lay pieces out as freely as you can from yardage, and the real usable amount for a given pattern is always a little lower. For honey buns and dessert rolls there is no reliable published figure, so it is safer to reason from the strip count and width: a dessert roll holds about the same total fabric as a jelly roll because both come to roughly 100 inches of strip, just divided into wider or narrower cuts. When you need to convert any of these into metric for a UK shop, the yards to metres converter handles the arithmetic.

Choosing a Precut for Your Project

With the sizes straight, picking a format comes down to the piece shape your design wants and how much planning you would rather skip. A few rules of thumb cover most decisions:

• For square-block quilts, match the square to the scale: mini charm for tiny patchwork, charm for baby quilts, layer cake for throws and beds.
• For strip quilts, pick by strip width: jelly roll for the classic look, honey bun for fine lines, dessert roll for bold, fast tops.
• For scrappy variety, reach for fat quarters and fat eighths, which give many prints in small amounts.
• For a coordinated quilt with no colour planning, any single collection-based bundle does the work for you.

The other half of the decision is quantity. A single charm pack or mini charm rarely makes more than a small quilt, while a layer cake or two jelly rolls can reach a bed size. Working out exactly how many bundles a finished size needs is what the charm pack and strip calculators are for, so it is worth running the numbers before you buy rather than guessing at the shop.

Mixing Precut Formats

Precuts from the same collection are designed to be combined, and mixing formats is one of the most reliable ways to stretch a design. The classic pairing is a layer cake with a matching jelly roll: the squares build the body of the quilt while the strips become sashing, a thin frame, or a pieced border.

Combining formats also solves the leftover problem. Charm and mini-charm squares left over from one project drop straight into a scrappy block, and jelly roll strips that did not make it into a top become binding, since they are already cut to binding width. The trick is to keep the seam-allowance maths consistent: every precut loses a quarter-inch on each edge to seams, so a 5-inch charm square and four 5-inch cuts from a layer cake all finish at the same 4.5 inches and sit together cleanly.

Reading the Label: Counts and Variance

The single most useful habit when buying precuts is to read the band rather than trust the name. Piece counts are where brands diverge, and a pattern written for one count can leave you a square short if your bundle holds fewer.

• Charm packs and layer cakes are 42 pieces in the Moda standard, but some brands pack 40.
• Jelly rolls are usually 40 strips, though some collections run 42.
• Honey buns are 40 strips and dessert rolls are 20, both fairly consistent across brands.
• Strip length follows the bolt, so a width-of-fabric strip can be anywhere from 42 to 44 inches.

None of this variance is a problem if you check before you cut. When a pattern calls for a precut, count the pieces against what the pattern assumes, and buy a spare bundle if the maths is tight. The methodology behind these figures, and how each was checked against manufacturer and retailer sources, is set out on our source verification process page.

Precut Glossary

Precut

Fabric sold in a standard, ready-cut size rather than by the yard. Charm packs, jelly rolls, layer cakes, and fat quarters are all precuts; the format names are Moda Fabrics trademarks that other manufacturers cut to the same sizes under their own labels.

Width of fabric

The full span of a bolt from selvedge to selvedge, usually 42 to 44 inches for quilting cotton. Strip precuts such as jelly rolls and honey buns are cut to the width of the fabric, so their length follows the bolt rather than a fixed measurement.

Mini charm (Moda Candy)

Moda's smallest square precut, 2.5 inches on a side and usually 42 to a pack. Moda brands it "Candy"; the generic name is mini charm. It holds a little over a quarter-yard of fabric in total.

Fat quarter and fat eighth

Single reshaped cuts rather than bundles. A fat quarter is a quarter-yard cut to about 18 by 22 inches instead of a thin 9-by-44 strip; a fat eighth halves that again to roughly 9 by 22 inches.

Variety bundle

A precut that holds one piece of each print in a collection rather than a measured length of one fabric. This is why piece counts vary between bundles: the number of pieces tracks the number of prints in the collection.