How many ml are in 160mg?

Answer 1

This is an absurd question because a megagram (did you mean milligrams? same problem, either way) is a unit of weight whereas a milliliter (mL) is a unit of volume. If you asked, how many mL are in 40 mg of a certain substance, water for example, then the question would be meaningful.

Answer 2

This cannot be sensibly answered. A milliliter (mL or ml) is a measure of volume, grams (g), kilograms (kg) and milligrams (mg) are measures of weight or mass.

Answer 3

ml is a measure of volume and mg is a measure weight, therefore they are not comparable. you cannot convert one to the other.