How many squares per nine-patch block?
Each nine-patch block uses nine equal squares, arranged in a 3 × 3 grid.
Free quilting calculator
Nine-Patch Calculator
Nine-patch blocks are a classic quilt pattern. This calculator estimates the cutting sizes for the nine squares and the total fabric yardage needed.
Result
Nine-Patch cutting estimate
24 blocks at 12", needing 216 squares cut at 4.5".
- Finished block size
- 12"
- Finished square size
- 4"
- Cut square size
- 4.5"
- Center squares
- 24
- Corner squares
- 96
- Edge squares
- 96
- Center fabric yardage
- 0.375 yards
- Corner fabric yardage
- 1.375 yards
- Edge fabric yardage
- 1.375 yards
Traditional nine-patch uses three colors: one for center, one for corners, and one for edges. Adjust based on your design.
Formula
Each nine-patch block uses nine equal squares. Finished block size = 3 × finished square size. Yardage is estimated from WOF rows.
Example calculation
A 12 inch finished nine-patch block uses nine 4 inch finished squares, cut at 4.5 inches with ¼ inch seam allowance.
Results are planning estimates. Always round up when buying fabric, especially for directional prints, shrinkage, fussy cutting, or cutting mistakes.
Related calculators
Quilt Block CalculatorCalculate how many quilt blocks you need based on finished quilt size, block size, sashing, and borders.Four-Patch CalculatorCalculate four-patch quilt block cutting sizes, block counts, and fabric yardage for two-color or multi-color four-patch quilts.Fabric Yardage CalculatorEstimate fabric yardage from piece size, fabric width, quantity, seam allowance, and project type.
Frequently asked questions
Does this include seam allowance?
Enter the finished block size. The calculator adds seam allowance to determine cut sizes.
What is a disappearing nine-patch?
A disappearing nine-patch is made by cutting the nine-patch block and rearranging the pieces into a different design.
Can I use different size squares?
This calculator uses equal squares. For unequal squares, use the fabric yardage calculator instead.