- cf. Labmuffin: The chemistry of soap making.
- Pub chem containing molar weights of various compounds. Useful for stoichiometry, if you want to perform your own calculations.
- My preferred online lye calculator
- Soap Calc
- The Sage
- Soap Guild
- Certified Lye List (with basic equations)
- Article on and what oils have higher percentages of oleic and linoleic acids.
- A useful PDF with fatty acid profiles of common fats. I shamelessly took this the off of the internet years ago and have lost the original source. Useful compilations of fatty acid profiles are difficult to find or often behind a paywall.