Small tools you can use right now. No signup, no paywall. They're advisory and best-effort, never a certification: check them against your own supplier sheets before you mix. The full engine lives inside Alchemis.
Add your oils, choose NaOH (bar) or KOH (liquid), set superfat, and get the lye and water amounts from real saponification values, with a per-oil breakdown.
Open the calculator SoapIs your fragrance load within the IFRA Category 9 limit for soap? Check your planned use against your supplier's certificate, with the real per-constituent maxima for reference.
Open the checkerThese tools are advisory and best-effort: a quick sanity check, not a certification. Values are typical published references; the same oil or fragrance varies between suppliers, so always verify against your own documentation. Alchemis runs the full versions inside your recipe.
Recipes, batches, stock, cost per unit, and the full IFRA and allergen check, for soap and five other crafts. Free forever for hobbyists.