Tools City

mg to mL Calculator

The mg to mL calculator helps you convert the weight of a liquid which has the density of water to a volume - a conversion from units of milligrams to units of milliliters. As well as a mg to mL conversion, you can also use the calculator backwards to perform a mL to mg conversion.


How many mg in a mL?

So exactly how many milligrams are there in a milliliter? The first step to answering this question is to understand what the letter 'm' means when applied to units. It means one-thousandth (1/1000) of the original unit. Therefore we're asking how many thousandths of a gram are there in a thousandth of a liter. Recall that a gram is one-thousandth of a kilogram. Now that we've sorted that out, the question is now "What is the relationship between kilograms and liters?"