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Prefixes for Binary Multiplies

IEC International Standard names and symbols

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

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

Binary Multiples compared to SI Prefixes

Multiple	SI 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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Related Topics

Basics - The SI-system, unit converters, physical constants, drawing scales and more.

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ASCII Codes - ASCII codes and characters.
Binary Adding, Subtraction, Multiplicaton and Division - Adding, subtracting, multiplying and dividing binary numbers.
Binary to Decimal, Hexadecimal and ASCII Converter - Convert between binary, decimal and hexadecimal numbers.
Binary, Octal and Hexadecimal Numbers - Decimal, binary, octal and hexadecimal numbers.
Boolean Algebra - Logic functions where the values of variables are true (1) or false (0).
Bytes, Kilobytes and Megabytes - Computer bytes.
Data Types - Signed vs. unsigned datatypes.
Decimal System Prefixes - Prefix names used for multiples and submultiples units.
SI System - An introduction to the SI metric system.

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