Essential Oil Blend Calculator
Split a blend into top, middle and base notes by ratio: set your total drops and a note ratio and get the drop count for each note. A perfumery starting point, computed in your browser.
Blend by note
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Show the math
Each note's drops are its share of the ratio applied to your total:
note drops = total × note ÷ (top + middle + base)
Top notes flash off first, base notes linger longest, and middles tie a blend together. Drops are a guide, oils vary in strength, so blend in a carrier and let it mature a few days before judging. Keep every blend within safe skin-dilution limits and patch-test before use.
What this does
An essential oil blend calculator splits a blend into top, middle, and base notes by ratio: set your total drops and a note ratio to get the drops for each note.
How to use it
- Enter the total drops.
- Set the top:middle:base ratio.
- Read each note’s drop count.
- Blend and let it mature.
How it works
A classic perfumery split is about 30% top, 50% middle, 20% base. Let a blend marry over a few days, and keep within safe skin-dilution limits.
note drops = total × note ÷ (top + middle + base)
Understanding your result
Splitting the drops into top, middle, and base notes (a classic 30/50/20 split) gives a rounded scent that opens and settles rather than flashing off at once. Let the finished blend rest a few days so the notes marry before you judge it, and keep the total within safe skin-dilution limits once you add it to a carrier.
Example
100 drops at 3:5:2 gives 30 top, 50 middle, 20 base.
Sources & methodology
Last updated .
Frequently asked questions
How is each note found?
Each note\u2019s drops are its share of the ratio applied to your total: note drops = total \u00d7 note \u00f7 (top + middle + base).
What ratio should I use?
A classic perfumery split is around 30% top, 50% middle, 20% base, but adjust to taste \u2014 oils vary in strength and longevity.
Why let a blend mature?
Notes marry over a few days, so blend in a carrier and re-smell before judging. Keep within safe skin-dilution limits and patch-test first.
Do you store anything?
No \u2014 every calculation runs locally in your browser.
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