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Copyright: 1996 - 2024 Webmaster:
Kirt
Blattenberger,
BSEE - KB3UON
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
2 MB. Its primary purpose was to provide me with ready access to commonly needed
formulas and reference material while performing my work as an RF system and circuit
design engineer. The World Wide Web (Internet) was largely an unknown entity at
the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps
while tying up your telephone line, and a nice lady's voice announced "You've Got
Mail" when a new message arrived...
All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledged.
My Hobby Website:
AirplanesAndRockets.com
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Numerical Prefixes: Mathematical, Digital, IEC |
These are the commonly used numerical prefixes in the English language, but most seem to translate with European languages.
vendeko |
v |
decillionth |
10-33 |
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nonillionth |
10-30 |
xenno |
x |
octillionth |
10-27 |
yocto |
y |
septillionth |
10-24 |
zepto |
z |
sextillionth |
10-21 |
atto |
a |
quintillionth |
10-18 |
femto |
f |
quadrillionth |
10-15 |
pico |
p |
trillionth |
10-12 |
nano |
n |
billionth |
10-9 |
micro |
µ |
millionth |
10-6 |
milli |
m |
thousandth |
10-3 |
centi |
c |
hundredth |
10-2 |
deci |
d |
tenth |
10-1 |
deka |
da |
ten |
101 |
hecto |
h |
hundred |
102 |
kilo |
k |
thousand |
103 |
mega |
M |
million |
106 |
giga |
G |
billion† |
109 |
tera |
T |
trillion† |
1012 |
peta |
P |
quadrillion |
1015 |
exa |
E |
quintillion |
1018 |
zetta |
Z |
sextillion |
1021 |
yotta |
Y |
septillion |
1024 |
xenna |
X |
octillion |
1027 |
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V |
nonillion |
1030 |
vendeka |
V |
decillion |
1033 |
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undecillion |
1036 |
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duodecillion |
1039 |
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tredecillion |
1042 |
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quattodecillion |
1045 |
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quindecillion |
1048 |
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sexdecillion |
1051 |
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septendecillion |
1054 |
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octodecillion |
1057 |
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novemdecillion |
1060 |
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vigindecillion |
1063 |
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googol |
10100 |
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googolplex |
10google |
peta |
P |
250 |
1,125,899,906,842,624 |
tera |
T |
240 |
1,099,511,627,776 |
giga |
G |
230 |
1,073,741,824 |
Mega |
M |
220 |
1,048,576 |
kilo |
k |
210 |
1,024 |
exbi |
Ei |
260 |
1,152,921,504,606,846,976 |
pebi |
Pi |
250 |
1,125,899,906,842,624 |
tebi |
Ti |
240 |
1,099,511,627,776 |
gibi |
Gi |
230 |
1,073,741,824 |
mebi |
Mi |
220 |
1,048,576 |
kibi |
Ki |
210 |
1,024 |
uni, mono |
1 |
bi |
2 |
tri |
3 |
quadr |
4 |
quint, penta |
5 |
hex, sex |
6 |
hept, sept |
7 |
octo |
8 |
novem |
9 |
deca, deka |
10 |
† 1,000,000,000 is called "one billion" in the U.S., U.K., France (before May 3, 1961), Brazil, Puerto Rico, Greece,
and in Italy, Russia and Turkey it is referred to as "one billion" when written out, but as "one milliard" when written as 109.
1,000,000,000,000 is called "one trillion" in the U.S., but is called "one billion" in Germany, the Netherlands, Austria, Sweden, Norway,
Denmark, Finland, France (after May 3, 1961), Portugal, Poland. It is best to check for current definitions for each country
to be certain to get it right, or better yet, just write it out numerically to avoid confusion.
Thanks to Duncan for the zepto info.
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