How to calculate it
Finished width and length each grow by twice the finished border width. Two side borders are cut to the quilt-center length; top and bottom borders are cut to the new width. Add twice the seam allowance to each cut length and to the strip width.
Worked example
A 60 × 72 in center with 4 in borders finishes at 68 × 80 in. The total border length is about 280 in before seams and strip joins.
Before you cut or buy
- Measure through the quilt center and ease borders to that measurement to limit waving.
- The yardage estimate uses total strip length and may need more for directional prints or deliberate seam placement.
Common questions
Should I measure border lengths along the quilt edge?
Measure through the quilt center as well as near the edge. Using an overlong border can create waves. Cut to a stable center measurement and ease the top to fit evenly.
Does this include corner squares or mitered corners?
No. The layout assumes straight side borders followed by top and bottom borders. Mitered corners and separate cornerstones change cutting lengths and should be planned from the pattern.
Use your own measured materials and pattern instructions. Estimates cannot account for every variation in technique, shrinkage or layout.