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Binary prefixes

In December 1998, the International Electrotechnical Commission (IEC) approved names and symbols for prefixes for binary multiples for use in the fields of data storage, processing and transmission.

Contents: Binary prefix calculator and Binary prefix table.

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Binary prefix conversion calculator:

Enter the number into green field and click at "=" button:

(result)

prefixes with red background are not binary prefixes, they are here just for comparison.

Binary prefix table

Binary prefix table contains 6 prefixes for binary multiples:

Name	Symbol	Factor
(base)	-	2⁰ = 1
kibi	Ki	2¹⁰ = 1024¹
mebi	Mi	2²⁰ = 1024²
gibi	Gi	2³⁰ = 1024³
tebi	Ti	2⁴⁰ = 1024⁴
pebi	Pi	2⁵⁰ = 1024⁵
exbi	Ei	2⁶⁰ = 1024⁶

Comparison of binary- and SI prefixes:

B = Byte (= 8 bit)

one kibibit = 1 Kibit = 2¹⁰ bit = 1024 bit

one kilobit = 1 kbit = 10³ bit = 1000 bit

one mebibyte = 1 MiB = 2²⁰ B = 1 048 576 B

one megabyte = 1 MB = 10⁶ B = 1 000 000 B

one gibibyte = 1 GiB = 2³⁰ B = 1 073 741 824 B

one gigabyte = 1 GB = 10⁹ B = 1 000 000 000 B

Lines with green background have binary prefixes.

Notice: See also SI prefixes.

Source: NIST.gov - binary prefixes. (retrieved 2017-04-19)