Calculate your lye or fragrance amounts for the perfect batch!

Lye Calculator

Calculating the amount of lye you need for your next soap recipe is as easy as 1-2-3

*Please note: The Bramble Berry Lye Calculator assumes a 90% purity for Potassium Hydroxide (liquid soapmaking) and 97% purity for Sodium Hydroxide (solid bar soapmaking). These purity levels are what are commonly available for sale to consumers, including the lye sold at Bramble Berry.

Step 1

Choose your soap type and measurement units.

* What is superfatting level? Read about it on Soap Queen