Lye Calculator

Build a soap recipe, choose your lye type and water method, and get exact lye, water, and batch weights.

1. Type of Lye

2. Weight of Oils

lb

3. Water

4. Additional Settings

%
oz

5. Select Oils, Fats, and Waxes

OneAll

Oils, Fats and Waxes

6. Recipe Oil List

Oil Name%Weight (lb)
Total 0% 0

Scroll down to view your recipe.

7. Recipe Summary

Add oils to the recipe list, with percentages totaling 100%, to see the full recipe summary.

Sodium hydroxide and potassium hydroxide are caustic and cause severe burns. Wear goggles, gloves, and appropriate safety equipment.