For the “Chinese mile”, see . Multiples and submultiples of that unit include huálǐ and qiānlǐ. For the smaller Chinese units of length, see . For the related Japanese and Korean units, see ri.


In Cambodia, Laos, and Mongolia globe icon, 20ᵗʰ century, a unit of mass, approximately 37.5 milligrams.¹

X A map showing the location of Mongolia.

Where is Mongolia?

1. United Nations, 1966.


In Korea, at least as early as the 3rd century – 20ᵗʰ century, a unit of length. Also romanized as ri.

United Nations (1966) defines the Korean li as = 3.927… (i.e., 3 ⁵¹⁄₅₅) kilometers, which is the magnitude of the Japanese ri. It does not appear to be a magnitude the Korean ri, or li, ever had. In 1905, under the influence of Japanese systems of weights and measures, Korea defined the li as exactly 1/10 the size of the Japanese ri, that is 392.727… meters. opens a new page containing a chart that shows relationships between this unit and other units in its system That yielded a value much closer to historical values of the ri in Korea, for example:

Period in
centuries CE
3rd 434.16
6ᵗʰ-7ᵗʰ 531.18
7ᵗʰ-10ᵗʰ 559.8
10ᵗʰ-14ᵗʰ 552.96


In Macau, 20ᵗʰ century, a unit of length, approximately 0.376 millimeters.

United Nations, 1966.


In Macau, 20ᵗʰ century, a unit of mass, approximately 37.79 milligrams.

United Nations, 1966.


In Mongolia globe icon., 20ᵗʰ century, a unit of length, approximately 0.32 millimeters.

United Nations, 1966.


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