Japanese ri = 3926.79936 length (length)
Try converting from "ri" to actus (Roman actus), archin (Russian archin), caliber (gun barrel caliber), cloth finger, digitus (Roman digitus), fathom, finger, Greek cubit, link (surveyors link), m (meter), mil, nail (cloth nail), nautical mile, pace, Roman cubit, Roman mile, rope, span (cloth span), stadium (Roman stadium), sun (Japanese sun), or any combination of units which equate to "length" and represent depth, fl head, height, length, wavelength, or width.
ri = 5,521.37 archin (Russian archin), .08866279 arpentcan, 107.36 bolt (of cloth), 6,183,936 bottom measure, 42.94 city block (informal), 211,778.63 digitus (Roman digitus), 128.83 engineers chain, 2,147.2 fathom, 5,301.73 gradus (Roman gradus), 16,970.19 Greek span, 6.09 li (Chinese li), 1,855,180.8 line, 19,520 link (surveyors link), 68,710.4 nail (cloth nail), 13,267.97 Roman foot, 2.65 Roman mile, 35.79 skein, 17,177.6 span (cloth span), 21.26 stadium (Roman stadium), 3.68 verst (Russian verst).
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