1. What is Quilt Backing?

Quilt backing is the bottom layer of a quilt sandwich, typically made from a single large piece of fabric or several pieces sewn together. It needs to be larger than the quilt top to allow for quilting and finishing.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• Quilt Top Dimensions — Length and width of your finished quilt top
• 8 inches per side — Standard allowance for quilting and finishing

Explanation: The calculator adds 16 inches to both length and width (8 inches per side), then calculates the total area and fabric yardage needed.

3. Importance of Proper Backing

Details: Proper backing ensures you have enough fabric for the quilting process, allows for shifting during quilting, and provides enough margin for finishing the edges.

4. Using the Calculator

Tips: Measure your finished quilt top accurately in inches. The calculator assumes standard 42" wide backing fabric and adds the standard 8" per side allowance.

5. Frequently Asked Questions (FAQ)

Q1: Why add 8 inches per side?
A: This allows 4-5" for quilting margin (needed for longarm machines) plus 3-4" for finishing the edges.

Q2: Can I use less than 8 inches?
A: For hand quilting or domestic machines, you might get by with 4-6" per side, but 8" is recommended for professional results.

Q3: What if my backing needs seams?
A: The calculator shows total area - you'll need to divide this across fabric widths and add seam allowances.

Q4: Does this work for irregular shapes?
A: For irregular quilts, use the maximum length and width measurements.

Q5: What about directional fabrics?
A: Directional fabrics may require additional length - consult with your quilter if using directional prints.