About CraftFormulas

Free, instant calculators for makers who are tired of the spreadsheet shuffle.

Why this exists

CraftFormulas started because of a spreadsheet. Candle makers in Facebook groups and Reddit threads were passing around the same Excel file for wax calculations, or asking "how much fragrance oil do I add?" for the hundredth time. The answers were scattered across blog posts, YouTube comments, and forum threads, never in one clean place.

Nobody had built a fast, free tool for it. So I built one. Then a few more. Then soap calculators, skincare formulation tools, and pricing calculators for all of it.

Who this is for

Etsy sellers, small-batch candle makers, cold process soap makers, hobbyists getting serious, and anyone who has ever reached for a calculator mid-pour. These tools are built for the maker who knows what they're doing but doesn't want to redo the math by hand every time.

What's here now

14 free calculators across three crafts:

• Candle making: wax amounts, fragrance load, fragrance oil, batch scaling, and pricing
• Soap making: lye calculator (NaOH and KOH), water ratio, superfat, batch scaling, and pricing
• Skincare formulation: lotion and cream builder, lip balm, phase percentages, and batch scaling

All instant. No account required.

Get in touch

Questions, bugs, or a calculator you'd find useful: hello@craftformulas.com