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Teach your AI to do quilting math

Ask ChatGPT or Claude how much fabric you need and it will give you a number — often the wrong one. This fixes that. It is free, it takes two minutes, and it works on your phone.

  1. 1

    Copy the instructions

    Press the button above. That is the whole of step one.

  2. 2

    Paste them into your AI

    Open ChatGPT, Claude, Gemini — whichever you use — start a new chat, paste, and send. It will reply with something short like “understood”.

  3. 3

    Ask your question

    In that same chat, ask normally: “How much fabric for a queen quilt with 12 inch blocks?”

Things you can ask it

  • “How much fabric for a queen quilt with 12 inch blocks?”
  • “I have 20 fat quarters. What can I make?”
  • “My blocks should be 12½ but they come out 12¼. What am I doing wrong?”
  • “I need backing for a 72 by 90 quilt, my longarm lady wants 4 inches all round.”
  • “I already cut my squares at 4 inches but the pattern says 4½. Is it ruined?”

Making it remember

Most AI apps forget when you start a brand new chat, so paste it again next time. If yours has Projects — ChatGPT and Claude both do, on free accounts — make one called Quilting, paste this into its instructions once, and every chat in that project will already know it.

How to tell it is working

Ask: “How much backing for a 90 by 108 inch quilt?” A good answer tells you what it assumed, gives you a cut list rather than just a total, and uses fractions instead of decimals:

Backing needed: 98" × 116"   (your quilt plus 4" all around)
Cut: 3 panels 40" × 98"
Buy: 8¼ yd
Or: 108" wide backing → 3¼ yd, with no seams at all

If you just get “about 9 yards” and nothing else, it is not using these instructions. Start a new chat and paste again.

Always double-check anything expensive

Done this way the AI is doing the arithmetic itself, and arithmetic is what AI is worst at. The same math is on this site as ordinary calculators, with no AI involved — browse the toolbox.

If a number looks wrong, please tell us

That is the most useful thing you can send us, and you do not need to know anything technical. Email feedback@myfavoritequiltstore.com — something like “it said 7 binding strips and it should be 8” is perfect. We fix it, and everyone using it gets the fix.

This is free for anyone to use, including other quilt shops. The longer version, and the code behind it, is on GitHub.