Bias binding, with its greater stretch and flexibility is perfect for scallops, curves, and rounded corners.

This calculator removes the guesswork by estimating your total binding length and the exact start size of fabric (yardage/meters or square size) you need. Because bias involves diagonal seams and angled offcuts, it can use a little more fabric; we include a small allowance so results are practical, not tight.
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For projects where you don't need extra stretch, straight grain binding is recommended to make the most of your fabric. Straight grain binding is cut along the lengthwise or crosswise grain of the fabric, meaning the strips can run parallel or perpendicular to the selvage. This method is efficient and easy to cut, with minimal fabric waste, and works well for quilts with straight edges.