Build and share a formula

Updated October 23, 2026

The formula maker lets you write a formula with the purity and weight of every material, and shows the total and each percentage as you type. You need a free account.

Steps

  1. Open Create a formula and give the formula a name.
  2. Add an ingredient by typing its name or CAS number.
  3. Enter the purity in percent and the weight in grams.
  4. If the purity is below 100%, choose the solvent the material is diluted in.
  5. Add more lines for the other materials.
  6. Write notes if you like, choose who can see the formula and press Save formula.

Weight and solvent

The weight is what goes on the scale, solvent included. A material at 10% in ethanol weighed at 30 g is one line at 30 g.

Public or private

  • Public: everyone can see it, and it can appear on the pages of the ingredients it uses.
  • Private: only you can see it. You can change this later from My formulas.

Names and notes are plain text. Links are not allowed. To change a saved formula, open it from My formulas and edit it.