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weights and measures

metric prefixes


Yotta Y = 1024 = 1,000,000,000,000,000,000,000,000
Zetta Z = 1021 = 1,000,000,000,000,000,000,000
Exa E = 1018 = 1,000,000,000,000,000,000
Peta P = 1015 = 1,000,000,000,000,000
Tera T = 1012 = 1,000,000,000,000
Giga G = 109 = 1,000,000,000
Mega M = 106 = 1,000,000
kilo k = 103 = 1,000
hecto h = 102 = 100
deca da = 101 = 10
deci d = 10-1 = 0.1
centi c = 10-2 = 0.01
milli m = 10-3 = 0.001
micro µ = 10-6 = 0.000,001
nano n = 10-9 = 0.000,000,001
pico p = 10-12 = 0.000,000,000,001
femto f = 10-15 = 0.000,000,000,000,001
atto a = 10-18 = 0.000,000,000,000,000,001
zepto z = 10-21 = 0.000,000,000,000,000,000,001
yocto y = 10-24 = 0.000,000,000,000,000,000,000,001

Some of the above prefixes do have different meanings
when used with computer topics:

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


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Any suggestions or additional information will be appreciated.
Any information or specifications given without responsibility nor guarantee.


amcon (tm)
C. I. Wittke gmbh phone: +49 7943 2023
D-74249 Jagsthausen fax: +49 7943 8021
Germany / Europe info@amcon-luxled.com


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URL: http://amcon-luxled.com/measures/prefix.html
last modified on 17-Feb-2001