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Saponification calculator for soap: NaOH/KOH, superfat, water ratio, oil database, iodine value & hardness. Pro removes ads.

The Saponification Calculator helps you create soap recipes quickly and precisely. Select NaOH or KOH, set superfat and water concentration, choose oils from the integrated database – done. In addition, the app calculates average iodine value and provides a hardness estimation.

Features • Calculate with NaOH or KOH • Superfat (4–12 %) and water concentration • Oil database with English and German names (incl. INCI) • Output of lye amount, water amount, total mass • Average iodine value and hardness indicator • Recipe list: add, remove, clear oils

Pro Version (In-App Purchase) • Ad-free • Ideal for frequent use

Notes • Results are approximate; always follow safety guidelines.