Free Guide
Quilting Precuts Explained
Fat quarters, jelly rolls, layer cakes, charm packs — precut bundles are one of the fastest ways to start a quilt with a coordinated fabric palette. This guide explains exactly what you get in each bundle and which blocks and patterns work best with each.
Precut Quick Reference
| Precut | Cut Size |
|---|---|
| Fat Quarter | 18″ × 22″ |
| Jelly Roll | 2.5″ × 44″ strips |
| Layer Cake | 10″ × 10″ |
| Charm Pack | 5″ × 5″ |
| Honey Bun | 1.5″ × 44″ strips |
What Are Precuts?
Precuts are fabric bundles where all pieces have been cut to a standard size at the manufacturer — usually a full collection of coordinated prints, all from the same fabric line. Instead of buying yardage of a dozen fabrics and cutting them down, you buy one bundle and start sewing immediately.
The precut format was popularized by Moda Fabrics, which trademarked the names Jelly Roll, Layer Cake, and Charm Pack for their specific bundles. Other manufacturers sell equivalent products under different names — you may see "strip roll," "rolie polie," "10" squares," or "5" squares" — but the cut sizes are standard across the industry.
The trade-off with precuts: you can't choose individual fabrics from the collection. Every bundle contains one piece of each print in the line — if you love 20 prints and find 5 you'd skip, you have to make do. For custom curation, buying fat quarters individually is more practical.
Fat Quarter (FQ) — 18″ × 22″
A fat quarter is a quarter-yard of fabric cut differently than the standard "long quarter." A long quarter is cut straight across the bolt — 9″ × 44″. A fat quarter is cut at the half-yard mark and then in half lengthwise, giving you 18″ × 22″. Same amount of fabric, different shape.
The fat quarter shape is more useful for quilting because it lets you cut squares and blocks up to about 8.5″ finished — a long quarter is only 9″ wide and limits you to much smaller cuts after seam allowances. Fat quarters can yield:
- →Two 8.5″ unfinished squares (for a finished 8″ block)
- →Eight 4.5″ squares or six 5″ squares
- →Strips for a log cabin, Rail Fence, or string piecing
- →Several large background pieces for a sampler block
Fat quarter bundles don't have a single standard count — bundles range from 6 FQs (a "mini bundle" of a subcollection) to 20+ FQs for a full collection. When a pattern says "fat quarter friendly," it means all cuts in the pattern fit within 18″ × 22″ — no yard-wide cutting strips required.
Blocks that work well with fat quarters
Nine Patch, Four Patch, Churn Dash, Friendship Star, Pinwheel — most standard blocks up to 9″ finished work well.
Jelly Roll — 2.5″ × 44″ Strips
A Moda Jelly Roll contains 40 strips, each 2.5″ wide × the full width of fabric (~44″), rolled and tied with a ribbon. One roll includes one strip of each print in the collection. Equivalent products from other manufacturers: "Strip Rolls" (Northcott), "Rolie Polies" (RJR), "Roll-Ups" (various).
The 2.5″ strip is the width of a standard double-fold quilt binding strip — so jelly rolls work equally well for quilt tops and for binding. One full jelly roll provides approximately 1,760 linear inches of 2.5″ strips, enough binding for a twin-size quilt (perimeter ~300″) with considerable leftover, or the complete binding for most lap quilts.
For quilt tops, jelly roll patterns typically sew strips together end-to-end and then subcut or arrange them. Classic jelly roll patterns:
- →Rail Fence: sew three or four strips together, subcut into squares, rotate alternating blocks
- →Log Cabin: strips sewn around a center square — the Log Cabin block is the original jelly roll pattern
- →Bargello: strips sewn into tube units, offset and cut
- →Coin quilt: strips subcut into rectangles and stacked in columns
A jelly roll race quilt — sewing all 40 strips end-to-end and then folding and sewing in a continuous loop — is one of the most popular beginner projects because it can be completed in a single afternoon.
Layer Cake — 10″ × 10″ Squares
A Moda Layer Cake contains 42 squares, each pre-cut to exactly 10″ × 10″. Other brands call these "10" squares" or "stackers." One square per print in the collection; some collections have two each of select prints.
The 10″ square is generous — after a quarter-inch seam on each edge, you have a 9.5″ usable square, yielding a 9″ finished block. That means a single layer cake square makes one complete Nine Patch or Four Patch block from a single fabric, or it can be subcut into four 5″ charm squares or two 5″ × 10″ rectangles.
42 layer cake squares are enough for a generous lap quilt with 42 blocks set 6×7 or a twin-size quilt with additional sashing. Common layer cake patterns: simple squares-on-point settings, disappearing nine-patch variations, and "big block" designs where each 10″ square is used whole or in half.
Caution: some layer cake patterns require cutting the 10″ squares further down. Before cutting, check whether your block design requires the full 10″ square or subcutting — cutting can't be undone.
Charm Pack — 5″ × 5″ Squares
A Moda Charm Pack contains 40–42 squares pre-cut to 5″ × 5″. Equivalent products: "5" squares" (various), "Charm Squares" (Riley Blake), "Patchwork Squares" (others). One 5″ square yields one 4.5″ unfinished block — finished at 4″.
The 5″ square is the smallest standard precut, which makes it ideal for:
- →Charm quilts: each square used once, no repeats — the original name for a quilt where no two fabrics are the same
- →Baby quilts: 42 squares set 6×7 finishes at 24″ × 28″ — a crib or stroller quilt
- →Small blocks: a 5″ square cuts into four 2.5″ squares for half-square triangles or four-patch units
- →Sampler backgrounds: coordinated 5″ squares as alternating plain blocks between pieced blocks
The limitation of charm packs: 5″ is small. For blocks larger than 4″ finished, you need to either piece the charm squares into larger units (a four-patch of four charm squares gives you a 9″ unfinished / 8″ finished block) or supplement with additional yardage.
Mixing Precuts and Yardage
Most quilts made from precuts also require some additional yardage — for background fabric, sashing, borders, and backing. The precut provides the collection; the yardage provides the neutral or contrast fabric that ties everything together.
When mixing precuts with yardage from the same collection: check the bolt at the shop to confirm the print matches the precut. Fabric from the same collection can vary slightly between production runs, and precuts are sometimes cut from an earlier run than the current yardage on the bolt.
When using a neutral background with precuts: choose the background based on the value (light/dark) of the precut fabrics, not just the color. A white background reads very differently from cream; a medium gray reads differently from light gray. Pull out a few precut squares and hold them against potential backgrounds before buying.
Rough yardage rules for backgrounds
- →Charm pack quilt (lap size): 2–2.5 yards background fabric for alternating plain blocks or setting triangles
- →Layer cake quilt (lap size): 1.5–2 yards background fabric for sashing between 10″ blocks
- →Jelly roll quilt (twin size): 0.5–1 yard background fabric if used as accent strips between jelly roll strips
Are Precuts Worth It?
Precuts typically cost slightly more per yard than buying yardage individually — the cutting, coordination, and bundling has value. But they save time and guarantee that the prints work together (they were designed as a collection), which is a real benefit when you're early in your quilting journey and don't yet have a strong eye for print mixing.
The most important thing to check before buying a precut: does the pattern you want to use actually require that precut format? Many patterns marketed as "jelly roll patterns" can be made from yardage cut into strips — if you already have fabric in your stash, buy the pattern, not the bundle.
Plan your precut project
Use the HST Calculator to plan blocks from charm squares, or the Binding Calculator to see if your jelly roll strips have enough length.