Soap calculators

Cold process, hot process and melt-and-pour. Run your oils through the lye calculator, discount your water, resize the recipe to your mold, then price the bar so the market stall actually pays.

9 calculators
MOST USED Lye & superfat NaOH or KOH for any oil blend, with superfat. Open calculator →
Superfat Pick one, or read the superfat out of a recipe. Open calculator → Water discount All three water conventions, converted live. Open calculator → Hot process A wetter cook, and what goes in after it. Open calculator → Essential oil & fragrance Usage rate to weight, against your own IFRA limit. Open calculator → Resize a recipe Any recipe, restated for the mold you own. Open calculator → Mold & bar yield Mold volume to bar count, and back again. Open calculator → Melt and pour Base, fragrance and yield. No lye involved. Open calculator → Cost per bar Oils, lye, packaging and time, per finished bar. Open calculator →
QUIZ · 5 QUESTIONS Cold process or hot process, which suits you? Take the quiz →

Works for every craft

All calculators →
Batch size calculator Any formula, any batch → Craft pricing calculator Cost, wholesale, retail, fees → Fragrance calculator Craft first, then the load →

Read before your next batch

All guides →
SOAP How to use a soap calculator → SOAP What is superfat in soap making? → SOAP Cold process vs hot process soap → SOAP Water discounts explained → BUYING GUIDE Best lye for soap making → BUYING GUIDE Best soap molds for beginners → BUYING GUIDE Best oils for cold process soap → BUYING GUIDE Where to buy lye for soap making →
The Soap Batch Log
PRINTABLE · 24 PAGES
The Soap Batch Log
Recipe sheet, cure tracker and cost column per batch. Print at home, punch it, keep it by the stick blender.
$9 Buy & download