How is milligrams converted to grams?

The conversion from milligrams to grams is based on the metric system, where the prefix "milli-" denotes a factor of one-thousandth. Therefore, 1 milligram (mg) is equal to one-thousandth of a gram (g). This is represented mathematically as:

1 mg = 0.001 g

To express this in terms of whole numbers for ease of understanding in conversions, it can also be stated that 1000 mg will equal 1 g. This makes it clear that when converting from milligrams to grams, you divide the number of milligrams by 1000 to get the equivalent amount in grams. Thus, the correct relationship is that 1000 mg equals 1 g, confirming the answer provided. This fundamental conversion is essential for accurate dosing and measurement in medical practice, particularly in pharmacology and when administering medications.