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Soap Recipe Lye Calculator
Crafting precision for artisanal soap makers.
Safety disclaimer required
Alchemy requires caution. Outputs are informational only and may be inaccurate. Always verify units, oil weights, SAP/KOH purity, and superfat/water settings. Use proper PPE and safe lye-handling practices. Test small batches before scaling. You are responsible for safe use and compliance; the app assumes no liability. Read our Safety Guide.
Recipe Setup
Core lye, water, and batch parameters.
LOCKED: Total is fixed. Editing an ingredient weight updates its percentage relative to this total.
Water Calculation
* Ingredient amounts are locked while scaling.
Oils & Ingredients
Define your oil blend with percentages or weights.
| Oil / Fat | % | Weight | g |
|---|---|---|---|
| Total Blend | 100.0% | 500.0 | g |
Fragrance Blend
Total: 16.0 g / Target: 16.0 g
Add essential oils or custom fragrance compositions.
Additives & Superfat
Add essential oils, botanicals, or clays to your masterpiece.
Results
Calculated recipe amounts and costs.
Alchemy requires caution. Outputs are informational only and may be inaccurate. Always verify units, oil weights, SAP/KOH purity, and superfat/water settings. Use proper PPE and safe lye-handling practices. Test small batches before scaling. You are responsible for safe use and compliance; the app assumes no liability. Read our Safety Guide.
Water Amount
190g
NAOH Lye
71.2g
Total Oils
500g
Fragrance
16g
Master Batch
777.2g
Soap PropertyIdeal RangeYour Recipe
Hardness
Cleansing
Conditioning
Bubbly
Creamy
Iodine
INS
Saturated : Unsaturated Ratio45.7 : 50.8
Lauric
12%
Target: 0% – 30%
Myristic
5.15%
Target: 0% – 10%
Palmitic
24.75%
Target: 10% – 30%
Stearic
3.8%
Target: 2% – 15%
Ricinoleic
0%
Target: 0% – 15%
Oleic
41.75%
Target: 25% – 55%
Linoleic
8.7%
Target: 3% – 15%
Linolenic
0.35%
Target: 0% – 3%
Local Recipes
Recipes saved in localStorage.