Choose with context.
Explore what an oil brings to a bar, not just what it’s called.
Explore the field guide Cold-process soap formulation
Soap making
calculator.
Less guesswork.
Use our cold-process soap making calculator to calculate sodium hydroxide (NaOH), liquid, and fragrance in grams or ounces. Compare oils and butters with source-linked SAP values.
Clear numbers, cited sources.
SAP values shown plainly, ready for your review.
SAP values shown plainly, ready for your review.
Made
by hand
by hand
YOUR FIRST BATCHCuriosity
looks good on you.
looks good on you.
SMALL BATCH / BIG JOY
The good stuff, in orderFrom what’s in your bowl
From what’s in your bowl
to what’s on your bar.
See every number.
NaOH and water calculations trace back to ingredient SAP values.
See how it adds upMake it yours.
Save your formula in this browser, print it, then get making.
Build your first bar
01 A bar with a story in every swirl
A calmer first batch is a better first batchGood soap starts
Good soap starts
with good questions.
What does olive oil bring? Why does this number matter? SoapSpice helps you follow the thread from ingredient to finished bar—without taking the fun out of figuring it out.
Color, texture, and craft
A little inspiration for your next batch.
Every handmade bar has its own colors, textures, and finishing touches. Find a detail you love and make it your own.
Careful by design
Review ingredients Useful data. Sources in sight.
Ingredient SAP values are source-linked references, not a substitute for checking your supplier’s data. Review every formula and use appropriate cold-process safety practices before making.