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Old Apr 11th 2008, 09:13 AM   #1
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Metric Prefixes

Metric prefixes:
$\displaystyle \begin{matrix} \text{Prefix} & \text{Abbreviation} & \text{Meaning} \\ \text{yotta} & \text{Y} & 10^{24} \\ \text{zetta} & \text{Z} & 10^{21} \\ \text{exa} & \text{E} & 10^{18} \\ \text{peta} & \text{P} & 10^{15} \\ \text{tera} & \text{T} & 10^{12} \\ \text{giga} & \text{G} & 10^9 \\ \text{mega} & \text{M} & 10^6 \end{matrix}$
$\displaystyle \begin{matrix} ~~~\text{kilo}~~~ & ~~~~~~\text{k}~~~~~~ & ~~~~~~10^3~~~~~~ \\ \text{hecto} & \text{h} & 10^2 \\ \text{deka} & \text{da} & 10^1 \\ \text{deci} & \text{d} & ~10^{-1}~ \\ \text{centi} & \text{c} & 10^{-2} \\ \text{milli} & \text{m} & 10^{-3} \\ \text{micro} & \mu & 10^{-6} \\ \text{nano} & \text{n} & 10^{-9} \\ \text{pico} & \text{p} & 10^{-12}\end{matrix}$
$\displaystyle \begin{matrix} ~~~\text{femto}~~~ & ~~~~~\text{f}~~~~~ & ~~~~~~~10^{-15}~~~~~~~ \\ \text{atto} & \text{a} & 10^{-18} \\ \text{zepto} & \text{z} & 10^{-21} \\ \text{yocto} & \text{y} & 10^{-24} \end{matrix}$

Please note that these abbreviations are case sensitive, so a Ym is not the same as a ym. Likewise, even though there is no chance of confusion, a kilogram is kg, not Kg.

-Dan
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