What do note shares weigh in grams?
Perfume recipes are written as top, middle and base percentages, but the bench needs grams on a scale and drops from a dropper. Enter the blend volume, the three shares, the oil density and the volume of one drop, and each note comes back in all three units on one line.
The maths is proportional. Each note volume is the blend volume times its share, the weight multiplies that by the density, and the drop count divides the volume by one drop and rounds to the nearest drop. If the three shares do not add up to 100%, the calculation stops and reports the current total. The tolerance is 0.1 pp, and the shares are rounded to the single decimal shown before they are split.
Oil density and drop volume differ by product and by dropper and no official source publishes them, so both are yours to enter. Diluting the blend in alcohol or a carrier oil, predicting how long each note lasts and judging whether an accord works are not covered here. As of October 2026 this conversion uses only the definitions of density and volume.
Frequently Asked Questions
The calculation stops and reports the current total. The tolerance is 0.1 pp, so 99.9% and 100.1% still calculate.
Use the figure printed on the dropper, or count drops into a measured container. No official source publishes a single drop size.
No. This page only splits the fragrance itself into three notes; blending it down with alcohol or a carrier oil is not covered.