zepto

• unit prefix

  • new in 1.67

  • used before many unit names to multiply by 10^-21 . For example, a zeptometer is 10^-21 meters.

  • Currently the following unit names beginning with this prefix may be used: zeptoamp, zeptoampere, zeptoamperes, zeptoamps, zeptocoulomb, zeptocoulombs, zeptofarad, zeptofarads, zeptogram, zeptograms, zeptohenries, zeptohenry, zeptohertz, zeptohz, zeptojoule, zeptojoules, zeptoliter, zeptoliters, zeptolitre, zeptolitres, zeptometer, zeptometers, zeptometre, zeptometres, zeptonewton, zeptonewtons, zeptoohm, zeptoohms, zeptopascal, zeptopascals, zeptosec, zeptosecond, zeptoseconds, zeptosecs, zeptosiemens, zeptotesla, zeptoteslas, zeptovolt, zeptovolts, zeptowatt, zeptowatts, zeptoweber, zeptowebers, zeptoω

  • The full list of metric prefixes includes:

    • Prefix	Multiple
      deci	0.1
      centi	0.01
      milli	0.001
      micro	10 ^ -6
      nano	10 ^ -9
      pico	10 ^ -12
      femto	10 ^ -15
      atto	10 ^ -18
      zepto	10 ^ -21
      yocto	10 ^ -24
      deca, deka	10
      hecto	100
      kilo	1000
      mega	10 ^ 6
      giga	10 ^ 9
      tera	10 ^ 12
      peta	10 ^ 15
      exa	10 ^ 18
      zetta	10 ^ 21
      yotta	10 ^ 24