How to use
- 01
Enter the desired finished width and height of one rectangular cover. Add the seam allowance to use on every edge.
- 02
Set the number of covers and the usable width of your fabric. Keep rotation off for directional prints or when grain direction matters.
- 03
Check the pieces per row, row count and total length. If no panel fits, choose wider fabric or review the dimensions.
The calculation
Cut width = finished width + 2 × seam allowance. Cut height = finished height + 2 × seam allowance. Pieces = covers × 2. Pieces per row = round down (fabric width ÷ cut width). Rows = round up (pieces ÷ pieces per row). Fabric length = rows × cut height.
Two 45 × 45 cm covers with 1.5 cm seam allowance need four 48 × 48 cm panels. Two panels fit across 140 cm fabric, so two rows use 96 cm of fabric: 0.96 m.
Before you buy
This is a simple front-and-back rectangular cover. It excludes cushion thickness, zipper allowances, gussets, piping, envelope overlap, shrinkage and print matching. Optional rotation compares two uniform grids; it does not solve mixed-orientation nesting.