Because gram is a unit of mass and milliliter is a unit of volume (or volume), there is no necessary quantitative relationship between them. 1 ml equals 1000 cubic centimeters, 1 kg equals 1000 grams. The conversion between the two requires density as an intermediate quantity, that is, volume is equal to mass divided by density. But for a specific substance, such as water, it can be said that 1 kg of water is equal to 1000 ml of water.

Mass is equal to the product of volume and density, and the density of water is exactly 1, so a millilitre of water is exactly one gram, and for water, the number of milliliters is exactly equal to the number of grams; For oil, the density of oil is 0.8, 1 ml of oil multiplied by 0.8 equals 0.8 g; 1 g oil divided by 0.8 equals 12.5 ml.

Unit conversion

1l (l) = 0.001m3 (m? )

1l (l) =1cubic decimeter (dm? )

1l (l) =1000 cubic centimeters (cm? )

10000 ml =1000 cubic centimeter (cm? ) =1cubic decimeter (dm? )

1 mL liquid water =1cubic centimeter (cm? ) liquid water

1 l (l) =1000ml (ml) = 0.001m3 (m? ) =1cubic decimeter (dm? ) =1000 cubic centimeter (cm? )

1 ml =1cm? ）＝ 1cc

1 m3 (m? ) =1000 l (l)

One liter (L) =1000 mL.

Refer to Baidu Encyclopedia-mL for the above contents.