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NEW COURSE – NATURAL SOAP MAKING

Learn to make stunning, skin-loving soaps at home, from scratch, using only natural ingredients & expert techniques. Includes 26 lessons, 7 modules, ingredient handbook & lifetime access!

Learn at Your Own Pace

The Soap Calculator

Select your chosen oils, along with the weight or percentage. The soap calculator will then show the total weight of lye and water required to make your soap. Changing your preferred superfatting level or water/lye ratio can instantly adjust the result.

Important: Please read our disclaimer and instructions before using the calculator.

Soap Recipe Name

1) Will this be a Solid or Liquid soap recipe?

2) Select your Preferred Unit Of Measure

3) Add Your Ingredients

You may add up to 10 fats and oils, begin by selecting the first below. Then add the weight or percentage as a number, your preferred unit of measure is Grams/Ounces/Percentage

Select the first ingredient

Add Weight

Total Should Be 100%
2%
Total percentage should be equal to 100%

Total Weight

Soap Recipe Results

This can be instantly adjusted by changing your preferred superfatting level or water/lye ratio.
The defaults are recommended for beginners (see how-to guides below).

Your Superfatting Level

Recommended 5%

Your Water/Lye Ratio

Recommended: Solid Soap 2/1 - Liquid Soap 3/1

Total Lye Required

Total Water Required

Send This Recipe to Email

Calculator Instructions

Disclaimer:

1

By using the information provided by the Savvy Homemade Soap Calculator you accept and agree to the terms set out below. If you do not agree to these terms of use, please do not use any information provided by the lye calculator.

2

Please read our full website terms of use, our disclaimer, and privacy policy before using this information.

3

This lye calculator is not designed for use by soap-making beginners. If you’re a complete beginner or you haven’t made soaps before, I strongly recommend you take my Natural Soap Making Course, or follow a soapmaking tutorial/pre-formulated recipe before formulating your own soap recipe using this lye calculator.

4

The information obtained by using the Savvy Homemade lye calculator does not constitute legal or other professional advice on any subject matter. It has been designed for educational & entertainment purposes only and is not intended for commercial use.

5

Savvy Homemade does not accept any responsibility for any loss which may arise from reliance on information obtained by using the lye calculator. Please do not rely solely on the output of the lye calculator to create your soap. Take all necessary precautions when working with Lye and always test your soap with a PH strip before use.

6

Please do not rely solely on the output of the lye calculator to create your soap. Take all necessary precautions when working with Lye and always test your soap with a PH strip before use.

To Use The Calculator Please Follow These Steps:

  • Start by naming your soap recipe, then follow the steps.
  • Step 1
    Choose either Solid or Liquid Soap (see how-to guides below).
  • Step 2
    Choose your Preferred Units Of Measure, Grams or Ounces (I highly recommend Grams for more accuracy). There is a third option which is to select your oils as a percentage of 100. If you do select the Percentage option, you must input your Total Ingredients Weight in the field that opens up to the right.
  • Step 3
    Select each of your ingredients along with their individual weight. OR, if you chose to use percentage in the previous step, you input a percentage for each ingredient, making sure the total ingredients add up to 100%. The Total Ingredients Weight is calculated and shown below.
  • Step 4
    Once you have entered all of of your ingredients (along with their weights or %), move on to view the recipe results and superfat and water/lye ratio options.
  • Step 5
    I always recommend to superfat at 5% as standard, so the default is set to 5%. However, you can increase this up to 10% or decrease it to 0% (see guides below).
  • Step 6
    I usually recommend selecting a Water Ratio of 2/1, that’s a pretty good standard for any hard soap. For liquid soap, you would want 3/1 (see how-to guides below).
  • Step 7
    Double-check that all of your ingredients, weights, and recipe options have been set correctly before using the, Total Lye Required and Total Water Required values.
  • Step 8
    Use the Send To Email button to get the recipe sent to you by email (no spam privacy policy).

Important Notes:

1

Please do not rely solely on its output to create your soap. Take all necessary precautions when working with Lye and always test your soap with a PH strip before use. Learn how to make cold process soap here, or how to make liquid soap here.

2

The lye calculator assumes a 97% purity for NaOH (Sodium Hydroxide) and a 90% purity for KOH (Potassium Hydroxide), these are most commonly sold by most suppliers.

3

The sap values you see in the calculator, are taken as an average of saponification values provided by Certified Lye and many other trusted sources. But please remember that depending on a variety of factors, saponification values of oils can change.

If you’re a complete beginner or you haven’t made soaps before, I strongly recommend you take my Natural Soap Making Course, or follow a tutorial/pre-formulated recipe before formulating your own soap recipe using this lye calculator.

NEW COURSE – NATURAL SOAP MAKING

Learn to make stunning, skin-loving soaps at home, from scratch, using only natural ingredients & expert techniques. Includes 26 lessons, 7 modules, ingredient handbook & lifetime access!

Learn at Your Own Pace
Angela Wills

YOUR HELP
Please send me any feedback you have for the calculator, including any bugs or errors, using the comments below or the contact form here. Going forward this will help me improve and perfect the app for everyone. I'm open to developing it further if people can see possible additions or improvements.

Thanks, Angela

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