How to measure Essential Oils

 

 
 
A few abbreviations used in this approach:
 

Essential Oils

  Abbreviations
ml = millileters oz = fluid ounce
tsp = teaspoon tbsp = tablespoon

 
Rough and Ready Conversions
 
These conventional rules of thumb are not exact, but they are easy to remember and to calculate.
 

Approximate Conversion Table

Essential Oils

oz ml.   tbsp  tsp Drops
1oz 1 30 2 6 600
1tbsp 1/2 15 1 3 300
1tsp 1/6 5 1/3 1 100
1ml. 1/30 1 1/15 1/5 20
1 Dram 1/8 3.7 1/16 1/48 75
For Eye Droppers and Empty Bottles
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If you're using a recipe that calls for 15 drops of EO per tbsp of Carrier, you know you have a 5% dilution, because you have 15 drops in 300 drops, which is 5%.
Or you wanted to make a 4% dilution for one ounce of massage oil, you would add 24 drops to the ounce (because .04 x 600 drops = 24).
 

 

Essential Oils

 

Massage Oils

Approximate Dilution of Essential Oils to Carrier Oils
for a 5% dilution: 5 drops of EO to 5 ml (one tablespoon) of carrier
for a 2% dilution: 2 drops of EO to 5 ml (one tablespoon) of carrier
for a 1% dilution: 1 drop of EO to 5 ml (one tablespoon) of carrier

 

 

 
 

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