Fat Quarter Guide
Fat quarters are the most popular precut for scrappy quilts because one 18 x 22-inch piece is enough for real blocks. This guide shows how many you need for common quilt sizes and what fits on a single fat quarter.
How many fat quarters for common quilt sizes
The table assumes a scrappy quilt top of roughly 1.15 x the quilt area, split across fat quarters, with no borders counted. Block style and sashing change the number, so treat these as starting points.
| Quilt size | Finished size (approx.) | Fat quarters (approx.) |
|---|---|---|
| Baby | 36" x 52" | 6-8 |
| Lap | 50" x 60" | 9-12 |
| Twin | 68" x 86" | 17-20 |
| Full | 81" x 96" | 23-26 |
| Queen | 90" x 102" | 27-30 |
| King | 108" x 108" | 33-36 |
What fits on one fat quarter
| Piece | Cut size | Per fat quarter |
|---|---|---|
| Charm squares | 5" | 12 |
| Layer-cake squares | 10" | 4 |
| Strips | 2.5" x 22" | 7 |
| Jelly-roll style strips | 2.5" x 18" | 8 |
| Half-square triangles (7.5" squares) | 8" | 4 |
Planning a scrappy quilt
For a scrappy look, mix fat quarters from the same color family and cut every block from a single fat quarter where possible. That way each block has its own fabric and the seams stay manageable.
Use the fat quarter calculator for exact cut counts, or the precut calculator to convert any square size into fat quarters and yardage.
Common questions
Do I count sashing and borders in the fat quarter total?
No — the table is for the block top only. Add 2-4 fat quarters (or a separate yardage purchase) for sashing and borders.
Are fat quarters prewashed?
Usually not. If you wash your quilts, prewash fat quarters before cutting, or expect 3-5% shrinkage.
How do I store fat quarters?
Fold them to a uniform 9 x 11 inches and store on a shelf or in a bin by color. Consistent folding makes it easy to see your stash at a glance.
What if I buy a fat quarter bundle?
Bundles typically hold 8-12 fat quarters. That's perfect for a lap quilt and about half of what a twin quilt needs.