The metric system is used to measure many different things, including mass, length, and volume. In the case of mass, the unit of measurement is the gram (g). For length, the unit of measurement is the meter (m). And for volume, the unit of measurement is the liter (L).

However, sometimes you may come across the units milligram (mg) and milliliter (mL). So what is the difference between these two units of measurement?

The difference between mg to mL is that mg is a unit of measurement for mass, while mL is a unit of measurement for volume. In other words, mg measures how much something weighs, while mL measures how much space something takes up.