Wondering how much essential oil to add to melt and pour soap? My simple calculator does the math for you! Enter the weight of your soap base, select your desired essential oil percentage, and you'll instantly get the approximate amount to use in grams and ounces.
Choose a percentage between 0.5% and 2.5%. Always check the maximum usage rate for the specific essential oil and melt and pour soap base you're using.
Essential oil safety: This calculator performs the math based on the percentage you select. It does not determine a safe usage rate for a specific essential oil. Essential oil usage limits vary, and some oils require much lower concentrations. Always check the current usage guidelines for your specific essential oil and soap base before use.
Looking for a recipe to try? Browse my collection of melt and pour soap recipes for simple, creative ideas to make at home.
How much essential oil should I add to melt and pour soap?
The amount of essential oil you need depends on the weight of your melt and pour soap base and the percentage of essential oil you plan to use.
The basic calculation is simple:
Soap base weight × essential oil percentage = amount of essential oil
For example, if you are working with 500 grams of melt and pour soap base and want to use essential oil at 2%, you would use approximately 10 grams of essential oil.
The calculator above does this math automatically and converts the result into grams and ounces.
What percentage of essential oil should I use in melt and pour soap?
This calculator allows you to calculate essential oil amounts between 0.5% and 2.5% of the weight of your melt and pour soap base.
The appropriate amount depends on several factors, including the essential oil you are using, the recommendations provided by the manufacturer of your soap base, and applicable usage limits for the essential oil.
More essential oil does not necessarily make better soap. Some essential oils have much lower recommended usage levels than others.
Always check the usage recommendations for your specific ingredients rather than assuming that every essential oil can be used at the maximum percentage shown in the calculator.
Can I use this calculator for essential oil blends?
Yes. If your recipe calls for an essential oil blend, the amount shown by the calculator represents the total amount of essential oil for the batch.
For example, if the calculator indicates that your batch requires 10 grams of essential oil and you want to make a blend containing equal amounts of lavender and sweet orange essential oils, you could use 5 grams of each.
The combined amount of all the essential oils in your blend should equal the total amount calculated for your batch.
Can I use this calculator for cold-process soap?
This calculator was created specifically for melt and pour soapmaking.
Cold-process soap formulation involves different considerations, so I recommend using a calculator specifically designed for cold-process soap rather than using this tool to formulate a cold-process recipe.
Essential oil safety
Essential oils are highly concentrated botanical ingredients, and appropriate usage levels vary from one oil to another.
The percentage range available in this calculator is intended to make it easy to calculate an amount. It should not be interpreted as confirmation that every essential oil is appropriate for use at every percentage shown.
Always check current safety information and supplier recommendations for the particular essential oil and melt and pour soap base you are using.