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What is the meaning of KiB?

Published in Computer Storage Units 2 mins read

KiB stands for kibibyte, which is a unit of information equal to 1024 bytes.

Understanding KiB

A kibibyte (KiB) is a unit of measure for computer memory and storage. It's important to distinguish it from a kilobyte (KB), which is often (though incorrectly in technical contexts) used to represent 1000 bytes. KiB uses a binary prefix, indicating a power of 2, while KB generally uses a decimal prefix, indicating a power of 10.

Key Differences Between KiB and KB

Unit Abbreviation Value in Bytes Base
Kibibyte KiB 1024 Binary (2)
Kilobyte KB 1000 Decimal (10)

Practical Implications

Understanding the difference between KiB and KB (and other binary vs. decimal prefixes like MiB vs MB, GiB vs GB, etc.) is crucial for accurately interpreting storage capacities and data transfer rates. Software and hardware specifications often use these terms, and misinterpreting them can lead to confusion about actual available space or performance. For example, a hard drive advertised as 1 TB (terabyte) will actually have slightly less than 1 TiB (tebibyte) of usable space when formatted, due to the difference between base-10 and base-2 calculations.

Common Synonyms for KiB

According to the reference, other abbreviations for kibibyte include:

  • K
  • KB
  • kB

It's worth noting that using "K", "KB", or "kB" to represent 1024 bytes can lead to ambiguity as these are frequently used to refer to 1000 bytes as well. Therefore, using the proper "KiB" is recommended in technical contexts.

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