How many squares per four-patch block?
Each four-patch block uses four equal squares, arranged in a 2 × 2 grid.
Free quilting calculator
Four-Patch Calculator
Four-patch blocks are simple and versatile. This calculator helps you plan the cutting sizes and fabric needs for your four-patch quilt design.
Result
Four-Patch cutting estimate
36 blocks at 12", needing 144 squares cut at 6.5".
- Finished block size
- 12"
- Finished square size
- 6"
- Cut square size
- 6.5"
- Squares per block
- 4
- Total squares
- 144
- Squares per color
- 72
- Yardage per color
- 2.25 yards
Enter the number of colors to distribute squares evenly. Each four-patch uses four equal squares in a 2×2 grid.
Formula
Each four-patch block uses four equal squares. Finished block size = 2 × finished square size. Yardage is estimated from WOF rows.
Example calculation
A 12 inch finished four-patch block uses four 6 inch finished squares, cut at 6.5 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.Nine-Patch CalculatorCalculate nine-patch quilt block cutting sizes, square counts, and fabric yardage for traditional nine-patch designs.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 ½ inch for seam allowance on each side of the cut squares.
Can I use more than two colors?
Yes. The calculator supports 2-4 colors and divides the squares evenly among them.
What is a common four-patch block size?
Common four-patch sizes are 6", 9", 12", and 15" finished.