QuiltM8
In developmentBinding, backing, borders, triangles, precut value — plus a plan for the whole quilt, one shopping list, and a printable cut sheet.
31 calculators · 26 free forever
A closed test on Google Play is the next step.
Craft maths that is exact, offline, and yours forever.
One app per craft. Every formula published, every answer showing its working, and nothing that needs a signal, an account, or a subscription.
Works offline·no account·one-time purchase
Try it right here
You need
5/8 yd
fabric to buy
8 strips · 20"
Cross-grain binding, cut across the width of fabric. For a curved edge you want bias binding instead.
The family
One engine under all of them, and one promise: the numbers are right, and you can check them yourself.
KnitM8
In developmentGauge that actually accounts for rows, not just stitches — so sleeve increases, armhole shaping and yoke depth come out where the pattern meant them to.
Its free calculators are built and proving themselves against the same discipline as QuiltM8’s.
SoapM8
In developmentThree well-known soap calculators give three different answers for the same recipe, and none says why. This one shows the convention, the working, and rounds lye the safe way.
Its free calculators are built, with the lye conventions stated rather than assumed.
StitchM8
In developmentHow big a chart comes out on any count of fabric, which fabric to choose, and how many skeins to buy.
4 calculators built and checked
The name was checked against five trademark registers before it was printed here.
And one more at the bench — named here the day its trademark checks clear. In this family the checks come before the print.
Why the numbers are right
Every formula is worked out twice — once in the app, and once again from scratch by someone checking it — and thousands of worked examples are re-run before any release goes out. Where an answer depends on something we cannot know, like your shop’s prices, the app says so instead of guessing.
0
accounts, adverts and trackers, in the apps and on this site
nothing to consent to — this site sets no cookies at all
6749
worked examples checked before every release
counted when this page was built, 2026-08-29
26 of 31
calculators free, and free ones never move behind the price
69
published sources, readable without paying for anything
Who makes this
CraftM8 is built in Vienna. The promise is a short one: the numbers will be right, you will always be able to check them, and nobody will ever make you sign in to cut fabric. hello@craftm8.app is read by a person, and the imprint says who.