The HSCG Lye Calculator is different than other lye calculators because you can see the expected range
of the saponification value (SAP Value) of each oil and the actual SAP Value being used in the calculations.
With this information, you can more accurately calculate the amount of lye needed for the oils YOU are using
In addition, the HSCG Lye Calculator gives the option to calculate by amount or percentage, and to calculate
the lye necessary for soap using sodium hydroxide, postassium hydroxide or both.
Specify SAP Value: Registered Users may specify a different SAP Value for any oil they are using,
and that SAP Value will be used in the calculations. Login or
Register to access this functionality.
PLEASE NOTE: We have recently updated the lye calculator programming and display. If you run into any issues, please email with the details. Your assistance will be greatly appreciated!
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.