What does WOF mean?
WOF means width of fabric. For quilting cotton, it is often around 42 to 44 inches.
Free quilting calculator
Quilt Binding Calculator
Calculate quilt binding length, WOF strip count, and binding fabric yardage from your finished quilt size. The default strip width is 2.5 inches, a common choice for double-fold binding.
Result
Binding estimate
Cut 7 WOF strips and buy about 0.5 yards.
- Quilt perimeter
- 264"
- Binding length needed
- 276"
- WOF strips needed
- 7 strips
- Estimated yardage
- 0.5 yards
Most quilters add 10-12 extra inches for joining binding ends.
Formula
Binding length = 2 × (quilt width + quilt length) + extra joining length. Strip count = binding length ÷ WOF. Yardage = strip count × strip width ÷ 36.
Example calculation
A 60" × 72" quilt has a 264" perimeter. Add 12" for joining, then divide by 42" WOF to estimate the number of strips.
Results are planning estimates. Always round up when buying fabric, especially for directional prints, shrinkage, fussy cutting, or cutting mistakes.
Related calculators
Quilt Backing CalculatorCalculate quilt backing fabric in yards using quilt width, length, backing overage, and common fabric widths like 44 inch and 108 inch.Quilt Border CalculatorEstimate quilt border strips and fabric yardage using quilt size, border width, and fabric width.Quilt Size CalculatorChoose a quilt type or enter custom dimensions to estimate finished quilt size, backing, batting, and binding needs.
Frequently asked questions
How wide should quilt binding strips be?
Many quilters use 2.5 inch strips for double-fold binding, though 2.25 inch strips are also common.
How much extra binding should I add?
Adding 10 to 12 extra inches usually gives enough room to join binding ends comfortably.
Does this work for bias binding?
This calculator estimates straight-grain WOF strips. Bias binding may require a different cutting plan.