fermi = 0.000000000000001 length (length)
Try converting from "fermi" to agate (typography agate), barleycorn, bottom measure, city block (informal), digitus (Roman digitus), en (typography en), foot, French, gradus (Roman gradus), Greek fathom, Greek palm, ken (Japanese ken), mil, mile, pace, palm, parasang, ri (Japanese ri), stadia (Greek stadia), stadium (Roman stadium), or any combination of units which equate to "length" and represent depth, fl head, height, length, wavelength, or width.
fermi = 2.26E-20 arpentcan, 6.68E-27 astronomical unit, 2.19E-15 Biblical cubit, 1.57E-12 bottom measure, 3.94E-12 caliber (gun barrel caliber), 4.37E-15 cloth quarter, 5.69E-12 en (typography en), 5.47E-16 fathom, 4.50E-14 finger, 1.09E-17 football field, 4.32E-15 Greek span, 1.00E-09 micron, 6.21E-19 mile, 5.40E-19 nautical mile, 3.65E-17 naval shot, 2.36E-13 pica (typography pica), 1.99E-16 rod (surveyors rod), 3.38E-15 Roman foot, 4.37E-15 span (cloth span), 9.37E-19 verst (Russian verst).
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