Calculator
Pattern release break-even calculator
Enter what one release actually costs you and see how many copies it has to sell before it pays for the cash and then for your time.
Free tools
Calculators for independent sewing and knitting pattern designers
Two working calculators for the two questions that decide a release: what this pattern has to sell to pay for itself, and how many weeks the tester round really takes.
Pattern design has a cost stack that almost nobody writes down. Tech editing across a full graded range, sample yarn or fabric, notions, the photographer, the hours in the grading software and the hours answering tester notes. Then the platform takes a share of a twelve dollar sale. The first calculator puts that stack on one screen and tells you the copy count that clears it, both in cash and with your own hours priced in.
The second calculator works backward from a release date. Enter your size range, the coverage you want per size, how many accepted testers actually finish, and how long each report takes to read properly. It returns the number of applications to accept, the review hours to protect and the calendar days between opening the call and having a corrected file ready to sell.
Calculator
Tester round timeline and cohort size planner
Work out how many testers to accept, how many hours the reports will take to read, and how many calendar days sit between the call and a corrected file.
Working document
Tester round call file and correction log template
A working template for the two documents every pattern tester round needs: the call you post and the log every correction lands in.
Why the calculators are open with no sign up
Every designer in this trade already does this arithmetic, usually in the margin of a yardage worksheet or in a cell beside the grading table. You divide the tech editor invoice by whatever is left of a twelve dollar pattern once the storefront has taken its share. You multiply twelve graded sizes by two finished makes, then guess at how many accepted testers will send a real report before the window closes. None of it is hard math. It is just easy to skip, and a release funded on a guess is the one that turns into a hundred unpaid hours and a second sample.
So both calculators run right here with nothing to sign up for and no email asked. They are worth having on their own terms: a copy count you can hold against what your last three patterns actually sold in their first year, and an accept count you can post a tester call against tomorrow. Use them for a release that never comes near StitchPattern and they will still have earned their place. Nothing you type is kept.
When the numbers stop being hypothetical
A copy count and an accept count are useful the moment you have them and awkward the week you have to act on them. If the cohort the planner just sized is bigger than a spreadsheet can track size by size, ask for a demo and we will run one of your releases through the coverage view. Bring the figures you got here.