Candle & Soap Calculator

Candle & Soap Calculator requires a single one-time purchase to unlock both calculators. No subscription or ads.

Calculate a batch, save your recipe and keep notes about the result.

SOAP
- Calculate NaOH or KOH for 16 common oils.
- Enter oil weights or percentages and resize the batch.
- Set superfat and lye purity. Calculate fragrance as a percentage of oils.
- Choose water as a percentage of oils, lye concentration or a water-to-lye ratio.

CANDLES
- Calculate from finished weight, wax weight or a container measured with water.
- Save your containers and choose a wax density preset or enter your own estimate.
- See wax and fragrance quantities for one candle and the whole batch.

YOUR RECIPES
- Edit recipes, make copies and add material names and notes.
- Keep batch records with photos and test observations.
- Check off ingredients as you weigh them.
- Calculate costs from material pack prices, time and other expenses.
- Share a recipe PDF or export and import a library backup.

Calculations and recipes work offline. Purchases require the App Store. Recipe exports go only where you choose to share them.

Always double-check lye amounts and follow your suppliers' handling and usage instructions.

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