Block Layout Calculator 🪟
Calculate how many quilt blocks fit in your quilt, block arrangement rows and columns, and actual finished quilt size with optional sashing.
How to Use the Block Layout Calculator
Enter your target quilt size and finished block size. If you're using sashing (strips between blocks), enter the sashing width. The calculator finds the closest number of blocks that fit your target size.
The actual quilt size may differ slightly from your target size based on the block count and sashing. This is normal — adjust your border width to achieve the exact desired finished size.
For a balanced layout, choose a block arrangement that looks proportional (e.g., 5×7 or 6×8 for a rectangular quilt). Odd numbers of rows and columns often create more dynamic, interesting designs.
Frequently Asked Questions
What is sashing in quilting?
Sashing is strips of fabric sewn between quilt blocks to separate and frame them. Sashing can be plain strips or include cornerstones (small squares at the intersections). Sashing adds visual interest and can make a quilt larger without adding more blocks.
How do I decide on block arrangement?
Consider the finished quilt size you want, the block size, and whether you want sashing. A balanced layout (e.g., 5×7 or 6×8) looks more proportional. Odd numbers of rows and columns often create more dynamic designs. QuiltMetric shows you the actual finished size for any block count.
What if my quilt isn't the exact size I want?
If the calculated size doesn't match your target, you can adjust by: adding or removing blocks, changing the sashing width, adding borders, or adjusting the block size. Borders are the most flexible way to achieve a specific finished size.
How do I calculate the number of blocks needed?
Divide your target quilt width by the block size (plus sashing if used) to get the number of columns. Do the same for height to get rows. Multiply columns × rows for total blocks. QuiltMetric calculates this automatically and shows the actual resulting quilt size.