Lye Calculator

The HSMG Lye Calculator is available for both members and non-members. The difference between this lye calculator and other lye calculators is that you can see the actual Saponification Value (SAP Value) being used in the calculation.

Members may access the Advanced Lye Caluclator have the option of sepecifying the exact SAP value for the oils being used and can save recipes for future use.

1

Recipe Details Hide

Enter in the specifications for your recipe. This information is used for your information (name and notes) and for doing the actual calculations for the lye for your soap recipe.

Recipe Name:
Notes or Comments:
Unit Measurement: Ounces    Grams    Pounds   

All numbers entered below will be calculated based on this unit of measurement.

Calculation Method: By Amount of Oils Used
By Percentage of Each Oil
Lye Type: Sodium Hydroxide (NaOH)
Potassium Hydroxide (KOH)
Combination of Sodium Hydroxide AND Potassium Hydroxide


2

Select Your Oils Hide

Click an oil to add it to your recipe. Click again to remove it.

Note: The oils listed are the ones for which we have specifications. Additional oils may be added in the next step.

Almond Oil, Sweet

Apricot Kernel Oil

Avocado Oil

Babassu Palm Oil

Beeswax

Borage Oil

Brazil Nut Oil

Butterfat

Canola Oil (low erucic)

Cashew Nut Oil

Castor Oil

Cherry Kernel Oil

Cocoa Butter

Coconut Oil

Cod Liver Oil

Corn Oil

Cottonseed Oil

Emu Oil

Evening Primrose Oil

Ghee Butter (Buffalo Milk)

Goose Fat

Grape Seed Oil

Hempseed Oil

Horse Fat

Illipe Butter

JoJoba Oil (golden, unrefined)

Jojoba Oil (lite, refined)

Kokum Butter

Lard

Linseed Oil

Linseed Oil (low linolenic)

Mango Seed Oil

Meadowfoam Seed Oil

Mowrah Butter

Neem Oil

Neetsfoot Oil

Niger Seed Oil

Olive Oil

Olive Oil (pomace)

Olive Oil (refined)

Olive Oil (virgin)

Palm Kernel Oil

Palm Oil

Palm Olein

Palm Stearin

Papaya Seed Oil

Peach Kernel Oil

Peanut Oil

Pecan Nut Oil

Pine Nut Oil

Pistachio Nut Oil

Plum Kernal Oil

Poppyseed Oil

Pumpkin Seed Oil

Rapeseed Oil (low erucic)

Rapeseed Oil (unhybridized)

Rice Bran Oil

Safflower Oil (high linoleic)

Safflower Oil (high oleic)

Sesame Seed Oil

Sheanut Butter

Soybean Oil

Sunflower Seed Oil

Sunflower Seed Oil (high oleic)

Sunflower Seed Oil (mid-oleic)

Tall Oil

Tallow (beef)

Walnut Oil

Wheat Germ Oil


3

Specify Oil Amounts Hide

Enter the quantities for each of the oils you selected.

The SAP value range for each oil is shown. The default SAP value used in the calculations is the average for the SAP value range. Members: To adjust the SAP value being used for calculations, go to the Advanced Lye Calculator in the Member Area.

Oil / Sap Range SAP Value


4

Additional Oils Hide

If you have any additional oils or ingredients which have SAP values and should be included in calculating the amount of lye, add them here.

Note: Other ingredients for your recipe should be added in Part 5 (below).

Additional Oils SAP Value
+  Add a new line


5

Additional Ingredients / Additives Hide

If you have any more ingredients or additives to include in your recipe, add them here.

Note: Any oils that have saponification values should be added in Part 3 or 4 (above).

Ingredient / Additive Quantity
+  Add a new line


6

Display Options Hide

Select the options for how your results will display.

Directions: No
Yes
SuperFat: Show Range
Select Amount
Lye Discount: Show Range
Select Discount Amount
Water Amount:
Explanation 		Show Range
Select Amount

7
 


Disclaimer: The Handcrafted Soap & Cosmetic Guild is providing this lye calculator to soapmakers free of charge. Every effort has been made to ensure that the SAP values used herein are accurate. However, even in the best case, the SAP values provided by reputable sources are only acceptable ranges for each oil. The actual SAP value being used in the calculations is the average of the highest and the lowest acceptable level for an oil and is generally considered the norm for calculating the lye necessary for soap. However, the actual SAP value of any batch of a particular oil may be somewhat higher or lower than the value used in the calculations here (even if it falls within the acceptable range). That all being said, the HSCG is not responsible for any injuries, losses or other damages that may result from using the information provided herein.