Guys so I have read that mililtres to grams is the same,
But does this apply only to water? Since density comes into play with other liquids?
One gram is equal to one thousandth of the kilogram (kg), which is the current SI (Metric system) base unit of mass.
One gram (g) = weight of 1 milliliter (ml) of pure water at temperature 4 °C.
Some more info for you and a calculator to do conversions for you.
and here is a method to convert other materials than water into milliliters.