Prefixes of the Metric System

2015-01-09 21_56_03-Metric prefix - Wikipedia, the free encyclopedia

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Mnemonic Device:

  • Kings Hate Dragons Because Dragons Can’t Make Money.

Explanation: to remember the Metric prefixes, or the decimal ladder, and base unit (Kilo, Hecto, Deca, Base, Deci, Centi, Milli, Micro).


  • Great Mighty King Henry Died By Drinking Chunky Milk
    • Giga, Mega, Kilo, Hecto, Deca, Base, Deci, Centi, Milli
  • King Henry Died Bloated Drinking Chocolate Milk
  • King Henry Doesn’t March Down Chocolate Mountains
  • Good Models Know How Dunkin Donuts Can Make U Not Petit
    • Giga, Mega, Kilo, Hecto, Deca, Deci, Centi, Milli, Micro (symbol looks like a “U”), Nano, Pico
  • Kittens Hate Dogs But Do Chase Mice
    • Kilo, Hecto, Deca, Base, Deci, Centi, Milli
  • The Great Medieval Killer Hates Dragons, Dragons Cry More Musically, Now Peep.
  • The Great Mighty King Henry Died By Drinking Chunky Milk, Nes Pa?
    • Terra, Giga, Mega, Kilo, Hecto, Deca, Deci, Centi, Milli, Micro (symbol looks like a “U”), Nano, Pico
  • The Great Mighty King Henry Died Monday Drinking Chocolate Milk Under Neath Pier
  • Yawning Zebras Expect Promptness Towards Great Magnanimous Kings; Determined Centaurs Make Messes, Nicely Pushing Feminism At Zebras’ Yearnings.
    • for the prefixes that go from 10^24 -10^-24: Yotta, Zetta, Exa, Peta, Tera, Giga, Mega, Kilo, Deci, Centi, Milli, Micro, Nano, Pico, Femto, Atto, Zepto, Yocto.


This is another way to learn the metric system from milli to mega (as opposed to kilo down to milli);

  • Millipedes and Centipedes ate Daisies on U’r Deck, so Hector Killed Many.
    • Millipedes (milli); Centipedes (Centi); Daisies (Deci); U’r (Unit); Deck (Deca); Hector (Hecto); Killed (Kilo); Many (Mega).


Information from Wikipedia Metric prefix:

A metric prefix, or SI prefix, is a unit prefix that precedes a basic unit of measure, to indicate a decadic multiple or fraction of the unit. Each prefix has a unique symbol that is prepended to the unit symbol. The prefix kilo-, for example, may be added to gram to indicate multiplication by one thousand; one kilogram is equal to one thousand grams. The prefix centi-, likewise, may be added to metre to indicate division by one hundred; one centimetre is equal to one hundredth of a metre.

Weight: measured in grams, 1kg is one kilogram = 1000 grams ~ approximately 2 lb or 3.3 oz

Length/distance: measured in meters, 1km is one kilometer = 1000 meters ~ approximately 1093 yd

Volume: measured in liters, 1l is one liter = 1000 milliliter or 1000 ml ~ approximately 2.1134 US pt lqd.





  1. Mrs J Bradford says

    I looked this up as I was helping a student with this topic to see if there were any alternatives to the one I use. I am glad to see that there are, but I still feel that the one I use (invented by a year 7 pupil of mine) works better than all of these: “Killer Hedgehogs Drive (motorbikes/lorries/go-karts/jeeps) down crowded motorways”. The choice of vehicle clearly defines the base required.

  2. Really good
    Well made

  3. Tiny Gnomes Make Kind Hearts Do Many Deeds Christmas Morning Under No Pressure


    Many = meter/liter/gram/etc
    U = micro
    x = unidentified prefix

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