Convert from ri [Japan] to kilometer

Unit Definition (ri [Japan])
The ri is a traditional Japanese unit of distance, sometimes called the Japanese league because it is of similar length to the European league. The ri equals 2160 ken or 12 960 shaku (the shaku being the Japanese equivalent of the foot). This is about 3927 meters or 2.44 statute miles.

Unit Definition (kilometer)
The kilometer is one of the most common metric units of length or distance. One kilometer equals exactly 1000 meters (metres), about 0.62137119 mile, 1093.6133 yards, or 3280.8399 feet.