APPENDIX A Preferred Prefixes in SI (International System of

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Unitsa)

Prefix Abbr. Multiplier Example Name Value

atto a E_18 aW attowatt 10

_18 W

femto f E_15 fW femtowatt 10

_15 W

pico p E_12 pW picowatt 10

_12 W

nano n E_09 nW nanowatt 10

_9 W

micro _ E_06 mW microwatt 10

_6 W

milli m E_03 mW milliwatt 10

_3 W

Base unit W watt

kilo k E+03 kW kilowatt 103 W

mega M E+06 MW megawatt 106 W

giga G E+09 GW gigawatt 109 W

tera T E+12 TW terawatt 1012 W

peta P E+15 PW petawatt 1015 W

exa E E+18 EW exawatt 1018 W

aThe prefixes centi (c) multiplier of 10_2 and deci (d) multiplier 10_1 are

recommended only for area and volume units (cm2 and dm3, for example).

According to SI usage, the prefixes should be applied only to a unit in the

numerator of a set of units (MN/m2, for example, and not N/mm2). When

an exponent is involved with a unit with a prefix, the exponent applies to

the entire unit. For example, mm2 is a square millimeter, or 10_6 m2, and

not a milli-(square meter).

Copyright © 2003 Marcel Dekker, Inc.

Appendix B: Properties of Gases,

Liquids, and Solids

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