Bubbles & Numbers: A Guide to Calculating Lye, Percentages, and Discounts

Can you calculate a recipe by hand or do you rely on a lye calculator?  Lye calculators have made formulating and calculating a recipe easy.  It definitely saves us time.  And assuming we enter the information correctly it’s usually error free! However, a soap maker gains a better understanding of SAP values, lye strength, superfats, and water discounts when they learn to calculate recipes from scratch.

This class will teach students how to take a recipe and calculate every aspect required to make a successful batch of soap.  It will go over:

  • Saponification Values
  • Determining Lye Amounts
  • Converting KOH to NaOH (and vice versa)
  • Calculating Water
  • Lye Discounts / Superfat
  • Lye Solution Strengths (Water Amount)
  • Calculating using percentages to formulate


PLEASE READ CAREFULLY BEFORE PURCHASING: By purchasing this tutorial, you have agreed to the following:

Copyright 2022 Jennifer's Handmade Soap. All rights reserved. This handout is intended for the personal use and enjoyment of the buyer. No part of this handout INCLUDING PHOTOGRAPHS, may be reproduced or distributed in any printed or electronic format without written permission from the copyright holder. If you choose to sell the products you made from this tutorial, you may, but it is your sole responsibility to ensure the complete safety of your products by manufacturing in a clean, sanitary environment and by following all of the laws and regulations regarding the sale of cosmetics in your country of residence.

Qty available: 992 SKU: H008
Soapy Math HANDOUT $14.99

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