Lye Calculator
Calculate the exact amount of lye (sodium hydroxide) needed to saponify oils for soap making, based on your chosen oils and superfat percentage.
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How to use this tool?
- 1 Enter the requested data in the fields above carefully.
- 2 Click the calculate button to process the information instantly.
- 3 Analyze the detailed result and the formula explanation presented below.
- 4 You can print, share, or even embed the calculator on your own site for free.
Unlike traditional static calculators, our tools adapt to specific user needs. They include detailed explanations of the formulas used, ensuring transparency in results. Furthermore, our design is focused on user experience, eliminating distractions and focusing on what really matters: your data and conclusions.
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Frequently Asked Questions
A lye calculator helps soap makers determine the precise amount of sodium hydroxide (lye) needed to saponify a given amount of oils, based on the saponification value of each oil and desired superfat.
Select an oil from the dropdown, enter the weight of that oil in grams, and set your desired superfat percentage (default 5%). Click 'Calculate Lye' to get the required lye amount.
Superfat is the percentage of oils that remain unsaponified in the soap, providing moisturizing properties. A typical range is 5-10%.
This calculator handles one oil at a time. For multiple oils, calculate each separately and sum the lye amounts.
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