Japanese ri = 3926.79936 meter (length)
Try converting from "ri" to astronomical unit, bolt (of cloth), bottom measure, cloth finger, earth to moon (mean distance earth to moon), finger, Greek fathom, Greek span, line, link (surveyors link), marathon, nautical league, nautical mile, rope, sazhen (Russian sazhen), shaku (Japanese shaku), span (cloth span), spindle, 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 = 110.68 actus (Roman actus), 8,588.8 Biblical cubit, 17.89 cable length, 15,459,840 caliber (gun barrel caliber), 195.2 chain (surveyors chain), .00001022 earth to moon (mean distance earth to moon), 3,435.52 ell, 176,683.89 finger, 50,910.56 Greek palm, 4.15E-13 light yr (light year), 3,926.8 m (meter), 143.15 naval shot, 5,153.28 pace, 51,532.8 palm, 13,267.97 Roman foot, 2.65 Roman mile, 12,883.17 survey foot, 2.44 UK mile (British mile), 4,686.22 vara (Mexican vara), 4,294.4 yard.
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