Free Quilting Calculators
Accurate fabric, binding, backing and batting calculations for every step of your quilting project — no sign-up, no spreadsheets, no guesswork.
Find out exactly how much fabric you need for straight-grain or bias binding.
Work out how much backing fabric to buy, including seams and overhang.
Get the right batting size with the recommended overhang for quilting.
Estimate the yardage you need for your quilt top from any block layout.
Fabric for one or multiple borders, including mitered corners.
The starting square you need for continuous bias binding.
Yardage for any number of cut rectangles, with a waste allowance.
Cutting sizes and square counts for any finished HST size.
Finished size from your block grid, plus standard size chart.
Yards, meters, inches and centimeters — converted instantly.
Materials cost for your quilt: fabric, batting, backing and thread.
Total area and yardage equivalents for any number of fat quarters.
Sashing strips and fabric for your block grid.
Thread consumption and spool count for any project.
Cut sizes and yardage for one-at-a-time or no-waste geese.
Finished block size to cutting size, with seam allowance.
Side and corner setting triangles for diagonal-set quilts.
Charm packs, layer cakes and fat quarters into the squares you need.
Measure wash shrinkage and find the right cut size.
Binding yield from fabric squares, plus the size you need.
Yardage, seam allowance and sizing formulas in one place.
How many blocks across and down for any finished quilt size.
Cotton, polyester, wool and bamboo — compared and explained.
Step-by-step binding tutorial with miters and finishing.
How many fat quarters you need, and what one can cut.
Why use a quilting calculator?
Quilting math is simple in theory — but one wrong seam allowance or a fabric width you forgot to account for can leave you a few inches short at the worst moment. Our calculators handle the repetitive math so you can spend your time cutting, sewing and quilting instead of re-checking your arithmetic.
Every calculator gives you results in both imperial and metric units, includes a shareable link so you can save or send your numbers, and explains the assumptions behind the formula.
All 25 tools, free forever
Every calculator runs in your browser, includes unit conversions where they matter, and generates a shareable link with your numbers baked in. Bookmark this page — we'll keep improving the math and adding guides.