Quilt Fabric Calculator
Enter your piece size and count to see how much fabric to buy.
How this was calculated
This is an estimate. Measure your quilt and fabric before you cut.
Allowances vary by quilter and machine. Change any value to match yours.
Free. No account. Nothing you enter leaves your browser.
How the amount is worked out
First count how many pieces fit across the usable width. Then divide your count by that number and round up to whole rows. Rows times piece height is the length of fabric, rounded up to the step you buy in.
Example: on 40 inches of usable width, 5 inch squares fit 8 to a row. For 56 squares that is 7 rows, 35 inches, so buy 1 yard. For 57 squares you need an eighth row, 40 inches, so buy 1¼ yards.
Use the cut size
Enter the size you cut, with seam allowance already included. A piece wider than the usable fabric width can't be cut across it, and the calculator tells you so.
Questions
Should I include seam allowance?
Yes. Enter the cut size of each piece, including seam allowance.
Why does one extra piece add a whole row?
A new row takes its full height of fabric, even for one piece.
Does this work for several fabrics?
Run it once for each fabric or piece size.