Formula
perimeter = 2×(width + length); strip_length = perimeter + join_waste; strips = ceil(strip_length / (fabric_width − 2)); yards ≈ (strips × strip_width) / 36.
Worked example
60×70" quilt → 260" perimeter + 12" waste; on 42" fabric you typically cut 7 strips of 2.5" → about 0.5 yard.
Tips
Join strips on the bias for less bulk. Cut bias binding for curved edges. Press in half lengthwise for double-fold binding.
Common mistakes
Forgetting corner turn allowance; measuring only one side twice.
Attachment workflow
After cutting and joining strips on a 45° angle, fold wrong sides together and press. Attach to the quilt front with a walking foot if possible, mitering corners, then hand- or machine-stitch the back. Scant differences in strip width change how filling the binding looks—test on a scrap sandwich.
Limits and how to use the results
Estimates run only in your browser. Prefer a published pattern’s tested yardage when it conflicts with this planner. Density factors and assumptions are documented on the methodology page; legal terms cover planning-use limits.
FAQ
How much fabric for quilt binding?
Often 0.5–1 yard for throws; larger bed quilts may need more—calculate from perimeter.
What strip width should I cut?
2.5" is common for double-fold binding on quilts with batting; some prefer 2.25".