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Prefixes for Binary Multiples
SI Prefixes & Binary Multiples
Date: August 31, 2002
From: Bob
  

SI Prefixes
Factor Name Symbol      Factor Name Symbol
1024 yotta Y 10-1 deci d
1021 zetta Z 10-2 centi c
1018 exa E 10-3 milli m
1015 peta P 10-6 micro µ
1012 tera T 10-9 nano n
109 giga G 10-12 pico p
106 mega M 10-15 femto f
103 kilo k 10-18 atto a
102 hecto h 10-21 zepto z
101 deka da 10-24 yocto y
  
  

Prefixes for Binary Multiples
Factor Name Symbol Origin Derivation
 210 kibi Ki kilobinary: (210)1 kilo: (103)1
 220 mebi Mi megabinary: (210)2  mega: (103)2
 230 gibi Gi gigabinary: (210)3 giga: (103)3
 240 tebi Ti terabinary: (210)4 tera: (103)4
 250 pebi Pi petabinary: (210)5 peta: (103)5
 260 exbi Ei exabinary: (210)6 exa: (103)6
  
  
Examples and comparisons with SI prefixes
one kibibit  1 Kibit = 210 bits = 1024 bits
one kilobit  1 kbit = 103 bits = 1000 bits
one mebibyte  1 MiB = 220 Bytes = 1 048 576 Bytes
one megabyte  1 MB = 106 Bytes = 1 000 000 Bytes
one gibibyte  1 GiB = 230 Bytes = 1 073 741 824 Bytes
one gigabyte  1 GB = 109 Bytes = 1 000 000 000 Bytes
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