The calculator that knows your craft
Dye baths, board feet, brew gravity — your formulas, worked out your way.
Dye Bath MixerFrom fiber weight to grams of dye, salt, and soda ashBoard Foot ReckonerTurns a cut list into board feet and a priceBrew Day NumbersGravity in, ABV and priming sugar outRecipe RescalerDoubles the dough, converts the cups, resizes the panSoap SafeLye and superfat worked out, double-checkable at a glanceSweater MathYour gauge swatch, turned into cast-on counts and yardage
Or describe your own →Every craft runs on a little math
Behind every good batch there's arithmetic — grams of dye to weight of fiber, board feet to a cut list, sugar to bottles. Getting it right is the difference between the thing you pictured and a Saturday's materials in the bin.
A calculator built for your craft speaks your units and your suppliers' sizes, remembers last month's numbers, and lives on the phone that's already in the workshop with you.
Describe the calculation the way you'd explain it at the bench, and it's a working tool. When the recipe changes, say so and it changes.
Templates
Start from a finished one and make it yours.
Built with Build Anything
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Questions
- Do I need to know how to code?
- No. You describe what you want in plain language and it gets built. If something isn't right, say what to change.
- Can it handle the formulas for my craft?
- Yes — describe the calculation the way you'd explain it to a friend, and it gets built in. Common ones like board feet, ABV from gravity, or percentage of weight of fiber are well understood, and you can supply your own numbers for anything niche. For safety-critical results like lye amounts, double-check against a trusted chart until you trust it.
- Will it work offline in the workshop?
- Yes. Add it to your phone's home screen and it keeps working once it has loaded — in a metal-shed lumberyard, a basement brew room, or anywhere else the signal doesn't reach.
- Can it save my recipes and materials?
- Yes — save your dyes, oils, yarns, or lumber prices once and reuse them every batch. The honest limit: what you enter lives on the device you entered it on, so keep the calculator on the phone that goes to the workshop.