Perfume dilution calculator
This tool runs entirely in your browser: no account, no signup, and nothing you type leaves this page. It is one of the free calculators.
How much solvent do I need for a dilution?
Enough that the total weighs what you are holding multiplied by its own strength and divided by the strength you want: 10 g of neat material taken to 10% needs 90 g of solvent, and ends as 100 g in the bottle.
By mass, the way a bench works. The middle field is what is in the bottle you are pouring from: leave it at 100 for neat material, or set it to 10 to step an existing 10% dilution down further.
What this page cannot do is remember the answer. A dilution is only useful once every formula that draws on that bottle counts it correctly, which means the strength has to live with the material rather than on a sticky note. On the bench a dilution is a bottle of its own and every dose weighed from it is corrected automatically. Open the bench, free, no account needed to start.