###### Asked in Medication and DrugsMath and ArithmeticUnits of MeasureChemistry

Medication and Drugs

Math and Arithmetic

Units of Measure

Chemistry

# How many ml is one drop?

## Answer

###### Wiki User

###### July 21, 2008 9:13PM

1 US drop is 0.0648542 milliliter.

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### How many milligrams are in a drop?

It depends on the liquid. If they are water drops they
can vary in size. However a drop of water is reckoned to be about
0.05 ml in volume. I ml of water weighs 1 gm, so one drop of water
weighs 0.05 gms There are 1000 milligrams in a gram, so (0.05 x
1000 =) 50 milligrams would be the approximate weight of one drop
of water.