Total backing size and panels needed for a quilt top with long-arm or hand-quilting overage.
4 in is standard for long-arm; 2 in works for hand or home-machine quilting.
Backing size
68.0 × 88.0 in
Panels needed
2 panels seamed along the long side
2
Yards per panel
From 44-in fabric.
2.44 yd
Total yardage
4.89 yd
Backing math is driven by the bolt width. A 44-in bolt gives about 36 in of usable fabric after seam allowance and pre-wash shrinkage, so anything wider needs to be pieced — two panels seamed horizontally or vertically is typical for throw-to-queen sizes, three for king.
Long-arm quilters want at least 4 in of overage on every side so they can clamp the backing to the leaders; hand or home-machine quilting can get away with 2.
backing = (L + 2×overage) × (W + 2×overage)
panels = ceil(short_side ÷ 36)
yards = panels × (long_side ÷ 36)
Quilt Binding Yardage
Binding strip count and yardage for a quilt perimeter — with corner miter allowance.
Batting Cut Size
Batting dimensions for a quilt top with long-arm overage — plus standard sizing match.
Fabric Yardage
Yards needed by garment, size, and bolt width — plus an extra allowance for directional prints.