"ml" is a volume unit, often used to express the size of liquid volume. "mg" is a unit of mass. The two cannot be converted directly. Density is needed as an intermediate relationship for conversion.

How many mg is equal to 1ml? It depends on the density of that thing. For water, 1ml=1mg; for cooking oil, about 1ml=0.8mg. Generally speaking, 1ml of something heavier than water is greater than 1mg, such as soy sauce and salt water. It depends on the amount of salt added. In nature, the heaviest liquid is mercury, 1ml=13mg.

Volume

Volume is a Chinese word, the pinyin is róng jī, which refers to the volume of objects that can be accommodated in boxes, oil drums, warehouses, etc. Usually called their volume. To measure volume, volume units are generally used. To measure the volume of liquids, such as water, oil, etc., the commonly used volume units are liters and milliliters, which can also be written as L and mL.

Volume and volume are different:

1. They have different meanings. For example, the volume of an iron bucket refers to the size of the space it occupies outside, while the volume of this iron bucket refers to the amount of objects contained inside it. An object has volume, but not necessarily volume.

2. Different measurement methods. Before calculating the volume or capacity of an object, you generally need to measure the length, width, and height. To find the volume of an object, you need to measure it from the outside of the object, but to find the volume, you need to measure it from the inside of the object. A closed object that has both volume and volume, its volume must be greater than its volume.

3. The unit names are not exactly the same. Volume units are generally used: cubic meter, cubic decimeter, and cubic centimeter; the volume units of solids are the same as the volume units, while the volume and volume units of liquids and gases are generally liters and milliliters.

Reference for the above content: Baidu Encyclopedia - Volume