Physics reference SI prefixes	28Rp4 PhysRef
A comphrensive table of all SI multiples and submultiples.
SI prefixes.

prefix	symbol	value	expanded value	English name
yotta	Y	1024	1 000 000 000 000 000 000 000 000	U.S. septillion; U.K. quadrillion
zetta	Z	1021	1 000 000 000 000 000 000 000	U.S. sextillion
exa	E	1018	1 000 000 000 000 000 000	U.S. quintillion; U.K. trillion
peta	P	1015	1 000 000 000 000 000	U.S. quadrillion
tera	T	1012	1 000 000 000 000	U.S. trillion; U.K. billion
giga	G	109	1 000 000 000	U.S. billion
mega	M	106	1 000 000	million
kilo	k	103	1 000	thousand
hecto	h	102	100	hundred
deca	da [footnote 1]	101	10	ten
		100	1	one
deci	d	10-1	0.1	tenth
centi	c	10-2	0.01	hundredth
milli	m	10-3	0.001	thousandth
micro	u [footnote 2]	10-6	0.000 001	millionth
nano	n	10-9	0.000 000 001	U.S. billionth
pico	p	10-12	0.000 000 000 001	U.S. trillionth; U.K. billionth
femto	f	10-15	0.000 000 000 000 001	U.S. quadrillionth
atto	a	10-18	0.000 000 000 000 000 001	U.S. quintillionth; U.K. trillionth
zepto	z	10-21	0.000 000 000 000 000 000 001	U.S. sextillionth
yocto	y	10-24	0.000 000 000 000 000 000 000 001	U.S. septillionth; U.K. quadrillionth

Legend.
prefix The name of the prefix, which is prepended directly before a unit name with no spaces. For instance, prepending the prefix mega to the SI unit joule gives the word megajoule. symbol The symbol of the prefix, to be used in conjunction with the symbol for a unit, following the rules above. For instance, one would write MJ for megajoule. value, expanded value The value of the prefix, written in an abbreviated matter and then expanded. English name The English name for the unit; if U.S. and U.K. nomenclature differs, then both versions are shown.
Footnotes.
1. The deca prefix is sometimes written deka and is abbreviated dk. Spellings may vary, but its official symbol is always da, not dk.	footnote 1
2. The micro prefix is actually represented by the Greek letter mu, but is represented as u throughout these pages.	footnote 2
Cross-references.
Physics reference: Binary prefixes      A comphrensive table of all binary multiples.	28Rp5
Navigation.
Erik Max Francis -- TOP      Welcome to my homepage.	0e
Reference -- UP      A technical reference.	8Re
Physics reference -- UP      A physics reference for students and teachers.	28Rp
Physics reference: SI units -- PREVIOUS      A comprehensive table of the base SI units.	28Rp3
Physics reference: Binary prefixes -- NEXT      A comphrensive table of all binary multiples.	28Rp5
Quick links.
Contents of Erik Max Francis' homepages -- CONTENTS      Everything in my homepages.	1In1
Feedback -- FEEDBACK      How to send feedback on these pages to the author.	1In5
About Erik Max Francis -- PERSONAL      Information about me.	1In7
Copyright -- COPYRIGHT      Copyright information regarding these pages.	1In4
Copyright © 1996 Erik Max Francis. All rights reserved.	28Rp4 PhysRef
Web presence provided by Alcyone Systems Last updated 2021 Jul 15 19:40 Web design by 7 sisters productions

---

The Alcyone Systems Web Ring (13 sites) >>>	Hard Science Hard science, the easy way.
[ Alcyone Systems | Erik Max Francis | Blackgirl International | Bosskey.net | CatCam | Crank dot Net | Hard Science | Losers dot Org | Polly Wanna Cracka? | Realpolitik | sade deluxe | 7 Sisters Productions ]