international metric system of si units
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13.3.2014 International Metric System of SI Units
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inductance henry H
mass flow
ratekilogram/second kg/s
mole flow
ratemole/second mol/s
power watt W
pressure pascal Pa
speed meter/second m/s
surface
tensionnewton/meter N/m
torque newton meter N-m
voltage volt V
volume cubic meter m3
volume flow
rate
cubic
meter/second m3/s
amount-of-
substance
concentration
mole/cubic
metermol/m3
non-SI units used on
ConvertUnits.com
Type Name Symbol
computer data
storagebyte B
computer data
ratebit/second bit/s
U.S. currency dollar $
SI prefixes
Factor Prefix Symbol
1024 1E24 yotta Y
1021 1E21 zetta Z
1018 1E18 exa E
1015 1E15 peta P
1012 1E12 tera T
109 1E9 giga G
106 1E6 mega M
103 1E3 kilo k
102 1E2 hecto h
101 1E1 deca da
101 1E1 deka da
10-1 1E-1 deci d
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13.3.2014 International Metric System of SI Units
http://www.convertunits.com/SI-units.php
10-2 1E-2 centi c
10-3 1E-3 m illi m
10-6 1E-6 m icro
10-9 1E-9 nano n
10-12 1E-12 pico p
10-15 1E-15 femto f
10-18 1E-18 atto a
10-21 1E-21 zepto z
10-24 1E-24 yocto y
International System of
Units
The International System of Units
(abbreviated SI) is the modern form of
the metric system. It is the world's mostwidely used system of units, both in
everyday comm erce and in science.
The older metric system included
several groupings of units. The SI was
developed in 1960 from the m etre-
kilogram-second (mks) system, rather
than the centimetre-gram-second (cgs)
system which, in turn, had many
variants.
The SI introduced several newly named
units. The SI is not static; it is a livingset of standards where units are
created and definitions are modified
with international agreement as
measurement technology progresses .
With few exceptions, the system is us ed
in every country in the world , and many
countries do not maintain official
definitions of other units. In the United
States, industrial use of SI is
increasing, but popular use is s till
limited. In the United Kingdom,
conversion to metric units is officialpolicy but not yet complete. Those
countries that still recognize non-SI
units (e.g. the U.S. and UK) have
redefined their traditional non-SI units in
terms of SI units.
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