One milliliter is equal to one thousandth of a liter or 0.001 liters. A milliliter is a unit of volume in the metric system. The milliliter is often used in measuring small amounts of liquid.

A milligram is one thousandth of a gram or 0.001 grams. It is a unit of mass in the metric system. The milligram is often used in measuring very small amounts of material.

To convert milliliters into milligrams, multiply the volume in milliliters by the density of the material. The density of water is 1 gram per milliliter, so the conversion for water is simple. For other materials, look up the density in grams per milliliter.

Many people are familiar with the metric system, but don't know how to use it properly. In this article, we'll show you how to convert milliliters (mL) into milligrams (mg), one of the most common conversions in the metric system.

To convert mL into mg, you will need to know the density of the substance you are converting. The density of a substance is its mass per unit volume. Once you know the density, you can multiply it by the volume (in mL) to get the mass (in mg).

For example, let's say you want to convert 10 mL of water into milligrams. The density of water is 1 gram per mL, so you would multiply 10 mL by 1 g/mL to get 10 grams. There are 1000 milligrams in a gram.