What a fat quarter is
A fat quarter is a half-yard of fabric cut in half parallel to the selvage, so you get a roughly 18" × 22" rectangle instead of a long, skinny 9" × 44" strip. That wider shape is why quilters use them: you can cut bigger patches, appliqué pieces, and binding scraps without running out of usable width.
A fat quarter bundle is a coordinated set of those cuts, often from one collection, one color story, or one designer, sold together so the prints already coordinate.
How to choose a useful bundle
We recommend reading fiber and hand first. Quilting cotton behaves differently from linen, cotton-linen blends, or gauze. Match the fabric to the project: a patchwork top, a garment accent, or a bag lining.
The fabric we stock is 100 percent natural fiber. The rare exception is recycled spandex under 6 percent, used when a woven needs stretch. Recycled polyester is a named synthetic. It is not a natural fiber.
Count the cuts against the pattern. A 12-piece bundle will not cover a queen quilt top by itself. We recommend checking the pattern fabric requirements before you commit to the palette.
Value and contrast matter. Bundles that are all mid-value pastels look muddy in photos and in finished blocks. Look for at least one light and one dark anchor.
Mix print scale. A large floral with smaller geometrics keeps every cut readable from across the room.
How many fat quarters you need
Planning figures for a scrappy patchwork top with no separate background fabric. Backing, batting, and binding sit on top of these numbers and are almost always bought as continuous yardage.
| Quilt | Finished size | Fat quarters |
|---|---|---|
| Baby or crib | 36" × 48" | 10 to 12 |
| Throw | 55" × 65" | 18 to 22 |
| Twin | 68" × 88" | 32 to 38 |
| Queen | 88" × 94" | 45 to 55 |
A pattern with a lot of low-volume background needs fewer prints and more yardage. We recommend checking the pattern’s own requirements before buying to this chart.
What one fat quarter yields
After squaring up, plan on a usable 17½" × 21½". From that:
| Cut | You get |
|---|---|
| 5" charm squares | 12 |
| 4½" squares | 12 |
| 6½" squares | 6 |
| 10" layer-cake square | 1, with useful leftovers |
| 2½" strips (21½" long) | 7: roughly 150 inches of binding |
| 2½" squares | 56 |
That binding figure is worth remembering: one fat quarter cut into 2½" strips gives about 150 inches, which covers a baby quilt with a little to spare. A throw needs two.
Fat quarters versus other precuts
| Precut | Size | Typical count | Best for |
|---|---|---|---|
| Fat quarter | 18" × 22" | Sold singly or in bundles of 6 to 42 | Anything needing a wide piece: appliqué, bag panels, larger patches |
| Fat eighth | 9" × 22" | Bundles of 10 to 42 | Scrappy quilts where you want more prints and less of each |
| Charm pack | 5" squares | About 42 squares | Simple patchwork with zero cutting |
| Layer cake | 10" squares | About 42 squares | Fast throws, half-square triangles |
| Jelly roll | 2½" × width-of-fabric strips | About 40 strips | Strip piecing, rail fence, binding |
The practical difference is shape, not quantity. Charm packs and layer cakes commit you to a square; jelly rolls commit you to a strip; a fat quarter leaves the decision open, which is why it is the most versatile precut and the most common bundle format.
How to use fat quarters in a project
We recommend fat quarters for patchwork blocks, English paper piecing, mini quilts, tote exteriors, pillow fronts, and scrap-friendly garment accents. Press, square up, and cut with a rotary cutter so you keep the usable 18" × 22" as intact as possible.
Cut the largest pieces first. The usual way to waste a fat quarter is to cut the small squares the pattern calls for, then discover there is no longer a run wide enough for the border strip. Lay the whole cutting plan out on paper before the blade touches fabric.
For stitch-and-flip or strip-piecing patterns written for jelly rolls, fat quarters are a different geometry: either rewrite the cutting chart or pick a pattern written for FQs. A pattern that says “fat quarter friendly” already converts the cutting chart to fat-quarter layout.
A rotary cutter, a self-healing mat, and a gridded quilting ruler are what turn 17½ inches of fabric into twelve squares that actually match. See essential sewing tools.
When to buy yardage instead
Bundles work when you want variety and a palette that already coordinates. For matching bias binding, large uninterrupted pieces such as dress backs, quilt backs, and linings, or a single print that has to match across a seam, we recommend continuous yardage.
Backing is the usual surprise. Plan a quilt back about 8 inches wider and longer than the top, which means a throw takes roughly 4 yards of 44-inch fabric pieced down the middle, or a single width of extra-wide backing. No number of fat quarters is a substitute unless piecing the back is part of the design.
Reading fabric specs covers the width-versus-yardage math, and buying fabric online covers ordering a continuous cut so a backing arrives in one piece.
Questions people ask
- What is a fat quarter?
- A fat quarter is a quarter-yard of fabric cut to roughly 18" × 22" instead of the long, skinny 9" × 44" strip you get from a standard quarter-yard cut. Same amount of fabric, far more usable shape, which is why quilters buy them by the bundle.
- How many fat quarters do I need for a quilt?
- Roughly 10 to 12 for a baby quilt, 18 to 22 for a throw, 32 to 38 for a twin, and 45 to 55 for a queen, before backing, batting, and binding, which are almost always bought as yardage. Patterns with lots of background fabric call for fewer prints and more yardage.
- How many 5-inch squares can you cut from a fat quarter?
- Twelve, in a 3 × 4 layout, with a usable area of about 17½" × 21½" after squaring up. The same fat quarter gives you 56 two-and-a-half-inch squares, or seven 2½" strips: about 150 inches of binding, enough for a baby quilt.
- Should you prewash fat quarters?
- We recommend prewashing if you are mixing them with garment fabric, if any print is a saturated red or indigo that might bleed, or if the finished item will be washed hot. Otherwise most quilters do not: the sizing helps precuts hold their shape while piecing, and the slight shrinkage after the first wash is what gives a quilt its crinkle. Whatever you choose, be consistent across the whole project.
- Are fat quarter bundles cheaper than yardage?
- Per yard, no: you pay a premium for the cutting and the coordinated palette. What you buy is variety and a palette that already works, which is hard to assemble yourself. Buy bundles for the prints and yardage for anything you need a lot of.
Shop fabric at Kitschy Notions
Shop colorful wovens, quilting cottons, and fat quarter bundles. Browse the fabric and fat quarter bundles baskets, or ask us for help sourcing a coordinated cut if you have a specific project brief.
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