Quilt Calculator: Yardage

Quilt Calculator is the quilting calculator that tells you how much fabric to buy and what to cut: fabric yardage, backing, binding, borders, blocks and triangles, in inches or centimeters.
Exact quilt math with seam allowances included, clear cutting diagrams and a shopping list by fabric for the store. Works offline, with no account and no subscription.

13 CALCULATORS, ONE FOR EVERY STEP
• Quilt backing calculator: backing yardage for any quilt top, with the seam layout drawn out (vertical or horizontal) and the cheaper one marked, plus the batting size to buy.
• Quilt binding calculator: how many strips to cut and how much fabric to buy, straight grain or bias, at any strip width you type.
• Quilt border calculator: up to 3 borders, pieced from strips or cut lengthwise, with the new quilt size after each one.
• Quilt size calculator: blocks, sashing and borders give you the finished size, or start from the size you want and get the blocks across and down.
• Fabric yardage calculator: strips and yardage for any number of squares or rectangles, in the cheaper direction. It also works backwards: how many pieces a cut of fabric gives you.
• Half-square triangle (HST) calculator: cut sizes for 2, 4 and 8 at a time, with an oversize-and-trim option.
• Quarter-square triangles (QST, hourglass units): cut sizes and squares per fabric.
• Flying geese calculator: the no-waste 4-at-a-time method, with square sizes and yardage for both fabrics.
• Square in a square: center and corner triangle sizes from the block size or the center size.
• Setting triangles and corner triangles for on-point quilts, plus the finished on-point size.
• Fat quarter calculator and converter: inches and cm, yards and meters, decimals and fractions, and how many squares you get from a fat quarter or fat eighth.
• Standard quilt sizes and batting sizes, crib to king.

PLAN THE WHOLE QUILT
• Projects: add any result to a project and get a shopping list by fabric. Cuts from the same fabric are added up before rounding, so you never buy the same ⅛ yard twice. A cutting list comes with it, and any line reopens its calculator with your numbers.
• Inches and centimeters: switch at any time. Fabric widths of 42", 44" and 108" wide-back, or 110 cm and 150 cm, and you set how much selvage to trim.
• Any binding width: 1½" for a binding attachment, 2¼", 2½" or whatever you cut.
• Visual results: backing panels and seams, binding strips, your quilt to scale next to crib, throw, twin and queen sizes, and each triangle method side by side.
• Exact numbers: fractions in eighths (3⅞", not 3.875), fabric rounded up to the next ⅛ yard or 0.1 m, and every step of the math shown. Want a safety margin? Turn on Generous for +10%.
• The back button works on every screen, and the app opens straight on your calculators.

FREE, WITH ONE-VIDEO UNLOCKS
Every calculator is free. Your first project is free too. More projects, a PDF of your shopping and cutting list, wide-back presets and extra color themes unlock for good on this phone when you watch one short video. No account, no subscription, nothing to buy.

ABOUT ADS
Quilt Calculator is supported by ads. A banner sits at the bottom of Home and the result screens. A full-screen ad can show after you add a result to a project now and then, never while you type and never in your first three. Watch one short video in Settings to turn ads off for 24 hours.

PRIVATE BY DEFAULT
Your projects stay on your device. No account, no sign-in, no server of ours. Where the law requires it, you choose how ads may use your data before any ad loads, and you can change that later in Settings.

In English, French, German, Spanish and Arabic (right to left).
Questions or ideas? Use the support email on this page.