Patchwork Potion Lab

Quilt Resize Spellbook

Enter the original cut size, choose a resize spell from 50% through 1000%, and the block math is stitched for you.

Cast Your Resize

Starting Width

Starting Height

Resize Percentage

Calculation Mode

You can type decimals like 3.5 or quilt-style fractions like 3 1/2 or 7/8.

In quilting mode, the app follows the cheat-sheet formula from your PDF: (starting size - 1/2") × scale + 1/2"

1/80.125

1/40.25

1/20.5

3/40.75

Plain dimension mode is handy if you just want direct scaling without seam allowance math.