Backing yardage for standard 44″ cotton against 108″ wideback, with 4″ of overage on every side, 2″ of total selvage loss and quarter-yard rounding. Size labels are examples, not universal standards — measure your finished top before buying.
| Example top | Finished size | 44″ fabric | 108″ wideback |
|---|---|---|---|
| Baby | 36 × 52″ | 2.5 yd 2 panels | 1.25 yd 1 panel |
| Throw | 50 × 65″ | 3.25 yd 2 panels | 1.75 yd 1 panel |
| Twin | 70 × 90″ | 5.5 yd 2 panels | 2.25 yd 1 panel |
| Full | 84 × 92″ | 7.75 yd 3 panels | 2.75 yd 1 panel |
| Queen | 90 × 95″ | 8.25 yd 3 panels | 2.75 yd 1 panel |
| King | 108 × 108″ | 9.75 yd 3 panels | 6.5 yd 2 panels |
Before buying: a directional print can stop you rotating to the lower-yardage layout, and a longarm quilter may ask for more overage than 4″. Confirm both before cutting.