See a perfume's cost per millilitre and per month of use.
A perfume's price per millilitre is the size-normalized cost, and its monthly usage spreads the bottle over how long it lasts. Concentrated fragrances are cheap per use despite a high bottle price, which per-millilitre cost reveals.
Perfume Cost per Use
Cost per mL = price / size; months = size / (sprays x spray volume x 30)
Cost per mL = price / size; months = size / (sprays x spray volume x 30) A perfume's price per millilitre is the size-normalized cost, and its monthly usage spreads the bottle over how long it lasts.
Concentrated fragrances are cheap per use despite a high bottle price, which per-millilitre cost reveals.
This calculator takes 4 inputs: Perfume price, Perfume size, Sprays per day, Spray volume. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.