Quilt Binding Calculator

The Quilt Binding Calculator helps quilters determine exactly how much fabric is needed to create binding strips for finishing a quilt. Whether you're working on a small wall hanging or a king-size bed quilt, this calculator ensures you purchase the right amount of fabric.

How It Works

Step 1: Calculate Perimeter

• Add the total length of all quilt edges
• Formula: Perimeter = (2 × Width) + (2 × Length)

Step 2: Add Extra for Corners & Joins

• Standard: Add 10-12 inches for seam allowances and corner mitering
• Conservative: Add 20-24 inches for more flexibility

Step 3: Calculate Strips Needed

• Divide total binding length by usable fabric width (typically 40 inches)
• Formula: Number of Strips = Total Binding Length ÷ Usable Fabric Width

Step 4: Convert to Yardage

• Multiply strips by binding width to get total fabric length
• Divide by 36 to convert inches to yards

Binding Types

Straight Grain Binding

• Cut along the fabric grain (crosswise or lengthwise)
• Best for quilts with straight edges
• Less stretch, easier to work with
• Uses less fabric than bias binding

Bias Binding

• Cut at a 45-degree angle to the grain
• Best for quilts with curved edges
• More flexible and durable
• Requires more fabric

Common Binding Widths

Tips for Success

1. Always add extra fabric - It's better to have leftover fabric than run short
2. Check fabric width - Standard quilting cotton is 42-44" wide; use 40" as usable width
3. Press seams - Join strips with diagonal seams for less bulk
4. Cut consistently - Use a rotary cutter and ruler for accurate strips
5. Pre-wash fabric - If you pre-washed your quilt fabrics, pre-wash binding fabric too

Standard Quilt Sizes

Disclaimer: This calculator provides estimates based on standard quilting practices. Actual fabric usage may vary based on pattern placement, fabric shrinkage, and cutting accuracy. Always purchase slightly more fabric than calculated.