Japanese ri = 3926.79936 meter (length)
Try converting from "ri" to arpentlin, bottom measure, cable length, engineers chain, fathom, foot, gradus (Roman gradus), Greek fathom, Greek palm, Greek span, Israeli cubit, ken (Japanese ken), league, li (Chinese li), mil, nautical league, palm, stadia (Greek stadia), survey foot, vara (Mexican vara), or any combination of units which equate to "length" and represent depth, fl head, height, length, wavelength, or width.
ri = 2,164,377.6 agate (typography agate), 107.36 bolt (of cloth), 6,183,936 bottom measure, 15,459,840 caliber (gun barrel caliber), 42.94 city block (informal), .00001022 earth to moon (mean distance earth to moon), 3.93E+18 fermi, 42.94 football field, 11,780,398.08 French, 2,121.27 Greek fathom, 50,910.56 Greek palm, 38,649.6 hand, 6.09 li (Chinese li), 3,926.8 m (meter), .09306317 marathon, 154,598,400 mil, 2.12 nautical mile, 51,532.8 palm, 12,958.79 shaku (Japanese shaku), 12,883.17 survey foot.
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