The Soap Calculator just got a major upgrade!

We’ve just upgraded the Soap Calculator! - it now includes:
  • Recipe Saving — Save your soap recipes to revisit or modify them anytime.
  • Template Recipes — Start new recipes faster with pre-filled templates.
  • Attach Images — Add an image to each recipe for easy identification.
  • Smart Preferences — The calculator now remembers:
    • Your selected Wizard Mode — no need to reselect it every time.
    • Your Print Options — automatically applied when printing.
  • ...and more! Usability and flexibility improvements throughout the interface.
Read more

Welcome to The Cosmetics Lab Soap Calculator

Welcome to The Cosmetics Lab, your trusted companion in cold process soap making!
Our Soap / lye Calculator is designed to help crafters create perfectly balanced soap recipes with ease.

With years of experience in soap making, we understand the importance of precision when formulating recipes.
That’s why, in 2012, we developed this free tool - to simplify calculations and ensure safe, high-quality results every time. We’re proud to support the soap-making community by helping crafters of all levels feel confident -not intimidated- in their creative process.

Whether you're a beginner or an experienced soap maker, The Cosmetics Lab is here to support your creativity with reliable, user-friendly tools.

Happy soap making!

The Cosmetics Lab is owned and operated by the sole proprietorship “DEKLERIS VASILEIOS”, registered in Greece.