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Lye Calculator

Lye Calculator (NaOH / KOH)

Enter weights for the oils you plan to use. Leave a row at 0 to skip it. Choose grams or ounces per row.
Oils (SAP values prefilled)
Oil
Weight
Unit















Add oil weights and click Calculate.

Safety note: This calculator uses approximate SAP values. Always double-check supplier SAP values and measure precisely with a scale. Wear PPE when handling lye. The author is not responsible for misuse.