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Free calculator · Layout & size

Quilt sashing calculator

Strips between the blocks, with cornerstones where they cross. Enter your layout to get the pieces and the yardage.

Sashing7/8 yd
  • 31 strips 2 1/2" × 12 1/2"
  • 12 cornerstones 2 1/2" square: 1/8 yd
  • Quilt center 54" × 68"

How it is calculated

Sashing strips are cut as long as the unfinished block and 1/2" wider than the finished sashing. You need one strip between every pair of neighbouring blocks.

Cornerstones are small squares where the sashing strips cross. There is one for every inside corner: one fewer than the blocks across, times one fewer than the blocks down.

Questions

How wide should sashing be?

Between one sixth and one quarter of the block size is a common range: 2" to 3" for a 12" block.

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