โ๏ธ DIY & Craft
Quilt Calculator
Quilt maths is mostly about seam allowances, because every block loses half an inch in both directions once it is sewn. Planning from the finished quilt size backwards through the block size is what keeps the borders even.
How it works
Finished quilt width
Finished quilt length
Finished block size
Seam allowance
Fabric width
Binding strip width
Blocks across
Blocks down
Total blocks
Cut block size (with seam allowance)
Fabric for the top
Fabric for binding
Fabric for backing
Frequently asked questions
How do I use the Quilt Calculator?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.