Nine Patch Quilt Pattern: Square Sizes and Block Counts
Published 2026-10-15. Updated 2026-10-15.
Cut each square as one third of the finished block, then add 1/2 inch for the seam. Gotham Quilts prints that on a quarter-inch seam: a 6-inch finished nine patch uses 2.5-inch squares, a 9-inch block uses 3.5-inch squares, and a 12-inch block uses 4.5-inch squares. Create Whimsy writes the same rule as (finished size divided by three) plus 1/2 inch, and gives the matching cuts: 6 inches finishes from 2 1/2-inch squares, 9 inches from 3 1/2-inch squares, and 12 inches from 4 1/2-inch squares.
Sew three rows of three. Press so the seams nest. A two-fabric checkerboard uses five squares of one fabric and four of the other. That is the whole block.
Square size for each finished block
Gotham's chart, on a standard 1/4-inch seam, is the cut list to keep by the ruler. Finished size is the block after it is sewn into the quilt. Cut size is the square you rotary-cut.
| Finished block | Cut square |
|---|---|
| 3 inches | 1.5 inches |
| 6 inches | 2.5 inches |
| 7.5 inches | 3 inches |
| 9 inches | 3.5 inches |
| 10.5 inches | 4 inches |
| 12 inches | 4.5 inches |
A finished size that divides awkwardly by three produces a cut the ruler fights. Gotham also lists a 2.25-inch finished block from 1.25-inch squares, which is the same formula and a fussy cut. For a first quilt, stay on the 6, 9, or 12 inch rows.
Create Whimsy says any finished size works if you can divide by three and add 1/2 inch. Use their words when you are drafting an odd size, and use Gotham's table when you want a size someone has already rounded.
Rows, or strips of three
For one block, cut nine squares and sew them. Place two squares right sides together, sew a 1/4-inch seam, add the third square, and repeat for the other rows. Sew the rows. Nest the seam allowances so the corners meet.
For many blocks, strip-piece. SewCanShe cuts 4 1/2-inch strips, sews them in sets of three, and sub-cuts the sets at 4 1/2 inches. Two combinations: light-dark-light, and dark-light-dark. Press the seams away from the light strip so the rows nest. Their instructions make 6 blocks that finish at 12 inches and measure 12 1/2 inches before they join the quilt. Square each block to 12 1/2 inches if a seam wandered.
That page uses four fabrics for those six blocks: light gray strips at 4 1/2 by 42 inches and 4 1/2 by 15 inches, plus two more 4 1/2 by 28 inch light strips; a peach strip at 4 1/2 by 42 inches and another at 4 1/2 by 15 inches; navy the same 42 and 15 inch lengths; deep coral one strip at 4 1/2 by 28 inches. If you are not sewing their quiltalong, cut the same count of strips the full width of the fabric, which they put at 40 to 42 inches, and you get more blocks from the same number of strips.
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A queen grid of 9-inch blocks
Count blocks from the finished size, not the cut size. Suzy Quilts lists a queen quilt at 90 by 108 inches, and says published bed sizes are approximate and can vary by 4 to 8 inches. A 9-inch finished nine patch divides both of those sides: ten blocks across the 90 inches, twelve blocks down the 108 inches. Change the block size or add a border when the division leaves a remainder. More bed sizes are on the quilt size chart.
A 12-inch block is the other common choice, and it will not tile that 90-inch queen width. Use the 9-inch row of the table when the quilt is 90 by 108, or pick a quilt size that the 12-inch block divides.
Cloth for six 12-inch blocks
Yardage is the strip list above, not a single number for every nine patch. One block at 12 inches finished is nine 4.5-inch squares. Five and four is the split for a two-fabric checkerboard. Six blocks, in the SewCanShe cutting list, are the 4 1/2-inch strips named in that section. Scale by repeating those strips, or by counting squares and dividing by how many fit across a 40 to 42 inch width.
Scraps work if every square is the same cut size. Create Whimsy also points at charm squares for a scrappy nine patch, and at a jelly roll for strip sets. A fussy-cut center is one square of the nine, usually the middle.
Nine-patch cousins
The plain block is the checkerboard. These captured cousins keep the nine-unit grid and change the patches:
- Disappearing nine patch: sew the block, cut it in quarters, turn the pieces. The size math is on the disappearing nine patch quilt page.
- Friendship star and shoo fly: squares and half-square triangles on the nine-patch grid. Create Whimsy names both.
- Churn dash: half-square triangles, one solid square, and four bar units, still a nine-unit layout.
- Ohio star: quarter-square triangles and squares. See Ohio star quilt block.
- Variable star: split quarter-square triangles and squares, in that same Create Whimsy list.
- Nine-patch chain: the SewCanShe block that looks odd alone and reads as a chain when the blocks are set together.
- Irish chain quilts use nine patches as the chain. The setting is on the Irish chain quilt pattern page.
String & Story quilts these simple blocks so the stitches show. The intro motifs on that page are meanders, loopy meanders, swirls, and switchbacks. Continuous curves suit a small patch. Walking-foot lines suit a larger one. Draw the plan on paper before you quilt the top, and skip a motif that will not fit the patch.
The four-patch, which is the smaller grid this block grows from, is on the four patch quilt pattern page. A wider menu of blocks is on quilt block patterns.
What size are the squares in a nine patch quilt?
Divide the finished block by three and add 1/2 inch. A 12-inch finished block uses 4.5-inch squares. A 9-inch block uses 3.5-inch squares. A 6-inch block uses 2.5-inch squares.
How to make a 9 patch quilt square?
Sew three rows of three squares with a 1/4-inch seam, nesting the seams. Or sew strips in sets of three, cut the sets, and sew three units into the block.
How much fabric do I need for a 9 patch quilt?
One 12-inch block is nine squares. A two-fabric checkerboard uses five of one fabric and four of the other. Six 12-inch blocks in one free tutorial come from 4 1/2-inch strips of four fabrics.
Can you provide a basic nine patch quilt pattern?
Yes. Cut nine equal squares, arrange them light-dark-light on the top and bottom rows and dark-light-dark in the middle, and sew with a 1/4-inch seam.
What are some variations of the nine patch quilt block?
Disappearing nine patch, friendship star, churn dash, shoo fly, and Ohio star all sit on a nine-unit grid. The plain checkerboard is the one to sew first.
What are some ideas for 9-patch quilts?
Repeat the block edge to edge, sash it, or alternate it with a plain square. A 9-inch block divides a 90 by 108 inch queen into ten blocks across and twelve down.