SI unit prefixes

The SI unit prefixes are given in the table below.

prefix	symbol	factor
yocto	$\mathrm{y}$	$10^{-24}$
zepto	$\mathrm{z}$	$10^{-21}$
atto	$\mathrm{a}$	$10^{-18}$
femto	$\mathrm{f}$	$10^{-15}$
pico	$\mathrm{p}$	$10^{-12}$
nano	$\mathrm{n}$	$10^{-9}$
micro	$\mathrm{\mu}$	$10^{-6}$
milli	$\mathrm{m}$	$10^{-3}$
centi	$\mathrm{c}$	$10^{-2}$
deci	$\mathrm{d}$	$10^{-1}$
deka	$\mathrm{da}$	$10^{1}$
hecto	$\mathrm{h}$	$10^{2}$
kilo	$\mathrm{k}$	$10^{3}$
mega	$\mathrm{M}$	$10^{6}$
giga	$\mathrm{G}$	$10^{9}$
tera	$\mathrm{T}$	$10^{12}$
peta	$\mathrm{P}$	$10^{15}$
exa	$\mathrm{E}$	$10^{18}$
zetta	$\mathrm{Z}$	$10^{21}$
yotta	$\mathrm{Y}$	$10^{24}$

Here is an example of using the SI unit prefixes: A centimeter is 1 meter * $10^{-2}$ or in scientific notation, $1\times10^{-2}$ meters.

Reference: National Institute of Standards and Technology, http://physics.nist.gov/cuu/Units/

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• Wkbj79
• bloftin

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