L is expressed as L in the international system of units, and its secondary unit is mL. The conversion relationship between L and other unit of volume is:1L = 1 000ml = 0.001m3 =1decimeter cubic =1000m3.

During the Han and Tang Dynasties in ancient China, one Hu = 10 bucket =100L = 1000 =2000. In the Song Dynasty, the system was reformed, with the weight unit stone as the capacity unit, 1 stone =2 hoops = 10 bucket, which has now been abolished.

Extended data:

The symbol of L was originally L, which is easily confused with Arabic numeral 1. The symbol of L was adopted at the international metrology conference of 1979. In international standards, the symbol of L is "L, L"; Scientific and technological circles tend to use L, and China and some countries (such as the United States) recommend L (expressed as "L, (L)" in the standard. After adding a prefix, it should not be changed to lowercase, for example, ml should not be mL.

In addition, in an era when technology is not developed enough and standard weights and measures are not popular enough, people generally measure the weight of grain in units of capacity such as liters and buckets, which is the imprint of the times. There are many literary works that reveal that the landlord's usury deceives farmers by means of small promotion (fighting) and large promotion (fighting), which reflects the exploitation system in feudal society.

Baidu Encyclopedia -L (unit of volume)