Essential Oil Dilution Calculator
Work out how many drops of essential oil to add to a carrier oil for a safe dilution: set your carrier volume and target percentage and get drops, EO volume and finished blend size. Calculates in your browser.
Add essential oil
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Show the math
The essential oil volume is a percentage of your carrier, then converted to drops:
EO mL = carrier × percent ÷ 100 · drops = EO mL × drops-per-mL
Dilution guidelines protect your skin, keep face and sensitive-skin blends around 1%, body blends 2–3%, and lower still for children, during pregnancy, or for elderly skin. Some oils are phototoxic or sensitising; check each oil and always patch-test before wider use.
What this does
An essential oil dilution calculator works out how many drops of essential oil to add to a carrier oil for a safe dilution, with the EO volume and finished blend size.
How to use it
- Enter the carrier volume.
- Set the target dilution percentage.
- Read the drops and EO volume.
- See the finished blend size.
How it works
Use roughly 1% for the face, 2–3% for body blends, and less for children or pregnancy. Some oils are phototoxic or sensitising — check each one and patch-test.
EO mL = carrier × percent ÷ 100; ~20 drops/mL
Understanding your result
The safe percentage depends on use: about 1 percent for the face, 2 to 3 percent for a body blend, and lower still for children, the elderly, or during pregnancy. Some oils are phototoxic or strong sensitisers, so check each one individually and always patch-test, because more essential oil is not more beneficial, just more likely to irritate.
Example
30 mL of carrier at 2% takes about 12 drops of essential oil.
Sources & methodology
Last updated .
Frequently asked questions
How are the drops found?
The essential oil volume is your dilution percentage of the carrier (EO mL = carrier \u00d7 percent \u00f7 100), converted to drops using drops-per-mL \u2014 aromatherapy convention is about 20 drops per mL.
What dilution should I use?
Roughly 1% for the face and sensitive skin, 2\u20133% for general body blends, and lower still for children, pregnancy or elderly skin. Always check each oil\u2019s own guidance.
Are all essential oils equally safe?
No \u2014 some are phototoxic, sensitising, or unsuitable for certain people. Check each oil and patch-test before wider use. This tool gives general guidance, not medical advice.
Do you store anything?
No \u2014 every calculation runs locally in your browser.
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