Observed arrival · 2026-10-20
Craft Numbers: calculators for makers
A free collection of browser-based calculators for recipe, material and pricing math across nine crafts.
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$Paid
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Candle, soap, sewing, yarn, resin and 3D-print makers
- Worth noticing
- The catalog spans soap calculations using both NaOH and KOH, plus tasks like bias binding, clay shrinkage and FDM print costs.
Field notes
The catalog is split into nine craft areas, including five sewing and quilting calculators and separate tools for FDM and resin printing. The homepage shows a fragrance-load example using 500 g of wax and an 8% load, and says each calculator includes its formula and a worked example. It also states that calculations run on the visitor’s device and that entered information is not uploaded or saved.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
◎NicheUnusually specific use
One card from the complete issue