Calculate binding for your quilt
Fabric Needed
0.07
yards
Perimeter
280"
Strips Needed
7
Inputs
Result
Perimeter = 2 × (60 + 80) = 280". Add 12" safety margin = 292" of binding. Each strip is 42" long, so ceil(292 / 42) = 7 strips needed. With 40" usable fabric width, floor(40 / 2.5) = 16 strips fit per row, so only 1 row is needed. Fabric = 1 × 2.5" / 36 = 0.07 yards.
Inputs
Result
Perimeter = 2 × (90 + 108) = 396". Add 12" safety margin = 408" of binding. Each strip is 42" long, so ceil(408 / 42) = 10 strips needed. With 40" usable width, floor(40 / 2.5) = 16 strips per row, so 1 row is needed. Fabric = 1 × 2.5" / 36 = 0.07 yards.
For double-fold binding (most common), cut strips 2.25-2.5 inches wide. For thicker quilts, use 2.5" strips. Single-fold binding uses 1.25-1.5" strips.
Add 10-12 extra inches to account for joining strips, turning corners, and the finishing overlap.
Bias binding (cut at 45°) is stretchier and works better for curved edges. Straight-grain binding is easier to cut and works fine for straight edges.
Place two strips right sides together at a 90-degree angle and sew diagonally across the overlap. Trim the excess and press the seam open for a flat finish.
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Last Updated: Feb 12, 2026
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