Japanese ri = 3926.79936 length (length)
Try converting from "ri" to arpentlin, chain (surveyors chain), cloth quarter, engineers chain, fathom, gradus (Roman gradus), league, m (meter), marathon, mil, nail (cloth nail), palm, pica (typography pica), Roman foot, Roman mile, rope, sazhen (Russian sazhen), soccer field, sun (Japanese sun), survey foot, or any combination of units which equate to "length" and represent depth, fl head, height, length, wavelength, or width.
ri = 110.68 actus (Roman actus), .08866279 arpentcan, 6,183,936 bottom measure, .00001022 earth to moon (mean distance earth to moon), 2,147.2 fathom, 3.93E+18 fermi, 176,683.89 finger, 12,883.2 foot, 5,301.73 gradus (Roman gradus), 2,121.27 Greek fathom, 50,910.56 Greek palm, 16,970.19 Greek span, 143.15 naval shot, 51,532.8 palm, 2.65 Roman mile, 12,958.79 shaku (Japanese shaku), 17,177.6 span (cloth span), 129,587.93 sun (Japanese sun), 12,883.17 survey foot, 3.68 verst (Russian verst).
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