This quilt block size calculator helps determine the finished block size needed to fit a specific quilt layout. Enter the quilt width and the number of blocks across to calculate the finished block size.
How to use calculator
Enter the finished quilt width in inches and the number of blocks you want across the quilt. The calculator will estimate the finished size of each block.
Explanation
When designing a quilt layout, it is important to know the finished block size so that the blocks fit evenly across the quilt top.
The block size is calculated by dividing the total quilt width by the number of blocks across.
Example math
If a quilt is 72 inches wide and you want 6 blocks across:
72 ÷ 6 = 12
Each quilt block should be 12 inches finished.