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Quilting calculator
Quilt Block Calculator
Work out how many finished blocks you need across and down for a rectangular quilt, with optional sashing between blocks.
Plan the block grid
Use 0 if there is no sashing.
48 blocks
6 blocks across × 8 blocks down.
Finished grid: 60.0 × 80.0 in, before borders.
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Finished vs cut size
Enter the size each block will measure after its seam allowances have been sewn.
If you use borders
Subtract the planned finished border width from the target dimensions before calculating the block grid.
Check your layout
Because counts are rounded up, the finished grid may be slightly larger than your target. The result shows the actual grid dimensions.
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