Dilution Chart

For one fluid ounce (600 drops) of carrier oil:

1% dilution = 6 drops
2% dilution = 12 drops
2.5% dilution = 15 drops
5% dilution = 30 drops or 1.5 ml
10% dilution = 60 drops or 3 ml

Or, for smaller amounts:

A rule of thumb: the number of drops you add to one measuring teaspoon (5 ml) of carrier tells the % dilution. 1 drop would be a 1% dilution, 2 drops, 2%, etc. [This only works with one measuring teaspoonful (5 ml for those with non-USA measuring spoons).]

1 teaspoonful of carrier oil  +  1 drop of essential oil  =  a 1% dilution
1 teaspoonful of carrier oil  +  2 drops of essential oil  =  a 2% dilution
1 teaspoonful of carrier oil  +  3 drops of essential oil  =  a 3% dilution

Measurements / Conversions (Volume)

1 fl oz = 600 drops = 30 ml = 2 tablespoons
1/2 fl oz = 300 drops = 15 ml = 1 tablespoon
1/6 fl oz = 100 drops = 5 ml = 1 teaspoon
1/30 fl oz = 20 drops = 1 ml = 1/5 teaspoon

X