or In Japan, ? – 20ᵗʰ century, a unit of length, = 60 ken = 360 shaku = 109 ¹/11 (that is, 1200/11, or about 109.0909) meters. link to a table showing relationships between Japanese units of length

The “square chō” is not equal to 3600 square ken, but rather an area 50 ken by 60 ken, 3000 square ken. opens a new page containing a chart that shows relationships between this unit and other units in its system

United Nations, 1966.


In Japan and the Ryukyu Islands, 20ᵗʰ century, a unit of area used for hilly or mountainous land, = 10 tan, approximately 9917.3554 square meters (approximately 2.451 acres). Also called a chōbu.

United Nations, 1966.


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