Japanese ri = 3926.79936 meter (length)
Try converting from "ri" to angstrom, archin (Russian archin), barleycorn, digitus (Roman digitus), earth to moon (mean distance earth to moon), ell, en (typography en), engineers chain, gradus (Roman gradus), Greek cubit, Greek span, hand, li (Chinese li), light yr (light year), mil, nautical mile, pica (typography pica), rod (surveyors rod), Roman foot, shaku (Japanese shaku), or any combination of units which equate to "length" and represent depth, fl head, height, length, wavelength, or width.
ri = 39,267,993,600,000 angstrom, 2.62E-08 astronomical unit, 8,588.8 Biblical cubit, 107.36 bolt (of cloth), 17.89 cable length, 15,459,840 caliber (gun barrel caliber), 17,177.6 cloth quarter, 3,435.52 ell, 22,345,652.96 en (typography en), 2,147.2 fathom, 3.93E+18 fermi, 19.52 furlong (surveyors furlong), 2,121.27 Greek fathom, 50,910.56 Greek palm, 38,649.6 hand, 6.09 li (Chinese li), 2.44 mile, 2.12 nautical mile, 35.79 skein, 129,587.93 sun (Japanese sun).
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