Convert from ri [Japan] to metre

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 (metre)
The meter is the basic unit of length adopted under the Systeme International d'Unites (approximately 1.094 yards). The meter is also the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second by definition