Sashing Calculator — Sashing Strips & Fabric
Calculate sashing strip quantities and fabric for quilt layouts.
Small squares where sashing strips meet
How We Calculate This
Sashing strips run between blocks horizontally and vertically. The calculator counts all strips and works out total fabric.
The formula
Vertical sashing = (Blocks across - 1) × Blocks down
Horizontal sashing = Blocks across × (Blocks down - 1)
Cornerstones = (Blocks across - 1) × (Blocks down - 1)
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify quantities before cutting or purchasing fabric.