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Prefixes for Binary Multiplies

IEC International Standard names and symbols

IEC International Standard names and symbols for prefixes for binary multiples for use in data processing and transmission.

Prefixes for Binary Multiplies
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

Binary Multiples compared to SI Prefixes

Binary Multiples compared to SI Prefixes
MultipleSI Equivalent
one kilobit 1 Kibit = 210 bit = 1024 bit
one kilobit 1 kbit = 103 bit = 1000 bit
one mebibyte 1 MiB = 220 B = 1048576 B
one megabyte 1 MB = 106 B = 1000000 B
one gibibyte 1 GiB = 230 B = 1073741824 B
one gigabyte 1 GB = 109 B = 1000000000 B

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