Maker’s Lye Calculator

Always add lye to water — never water to lye.

Units

Lye type

Batch oil weight (oz)

Superfat (%)

Water setting

Water = 35% of oils

Recipe oils

Totals: 100% (must equal 100%)

Total oils32.00 oz

Lye required (NaOH)— oz

Water— oz

⚠️ Wear goggles & gloves. Add lye to water. Work in a ventilated space.

SAP values are typical averages (NaOH). KOH estimated by 1.403×. Ranges approximate SoapCalc.