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How much binding for a 72 × 90 quilt?
Twin size quilt, finished 72″ × 90″.
Buy
5/8 yd
Cut 9 strips 2½″ wide across the width of fabric for 336″ of double-fold binding. Metric: 0.6 m.
How it's worked out
- Perimeter: (72 + 90) × 2 = 324″.
- Add about 12″ to join the ends and turn the corners: 336″.
- Each strip across 42″–44″ fabric gives about 40″ usable, minus ~2½″ for each diagonal join → 37½″ per strip.
- 336 ÷ 37½ = 8.96 → 9 strips. 9 × 2½″ = 22 1/2″ → round up to 5/8 yd.
Binding by strip width
| Strip width | Strips | Buy | Metric | Bias (continuous) |
|---|---|---|---|---|
| 2″ | 9 | 1/2 yd | 0.5 m | 28″ square (7/8 yd) |
| 2 1/4″ | 9 | 5/8 yd | 0.6 m | 29 3/4″ square (7/8 yd) |
| 2 1/2″ | 9 | 5/8 yd | 0.6 m | 31 1/2″ square (7/8 yd) |
| 3″ | 10 | 7/8 yd | 0.8 m | 34 3/4″ square (1 yd) |
Bias binding is only needed for curved or scalloped edges; straight-grain strips are fine for square corners.
Same quilt: backing
Backing for a 72 × 90 quilt: 6 3/4 yd of 42″ fabric (3 panels with 2 horizontal seams).
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