Smarter features to speed up your recipes!
"Pinned" buttons in soap calculator: work faster with less scrolling and less mouse moves!
You can now expand and collapse recipes in your recipe list to view their details without leaving the page.
We’ve also added filters for recipe name and ingredients, so you can quickly find the recipes you need.
Give it a try and enjoy a faster, more organized workflow!
Welcome to The Cosmetics Lab Soap Calculator
About Us
Welcome to The Cosmetics Lab Soap Calculator — your trusty sidekick in the sometimes-messy, always-fun world of cold process soap making.
The Cosmetics Lab Soap / Lye Calculator is here to take the stress out of recipe math and help you focus on what matters most: creating beautiful soaps.
But this project didn’t just pop out of thin air — it grew out of years of hands-on experience in soap-making.
From Soapmaker to Calculator Creator
Long before the soap calculator came to life, I was making soap in bulk — think hefty 30+ kg batches that needed muscle to cut and plenty of racks to cure. Those days taught me one very important thing: precision matters… especially if you don’t want a block of soap that could double as a doorstop.
The Birth of The Soap Calculator (2012)
In 2012, after more spreadsheets (and calculator button presses) than I’d care to admit, I built my own soap calculator to make recipe work easier. Soon after, I shared it publicly as TheSoapCalculator.com, so other soapmakers could benefit too. As the community discovered it, the project quickly took on a life of its own — in the best possible way.
Today: The Cosmetics Lab Soap Calculator
The Cosmetics Lab Soap Calculator is the next chapter: a modern, polished, and still-free tool that continues the same mission — making soapmaking calculations quick, safe, and reliable.
Whether you’re mixing your very first batch or you’ve got years of lye splashes on your apron,
TCL is here to make the numbers easy so you can enjoy the creative part.
Happy soap making! 🧼✨