KiB

Units & Measurements abbreviation · Data Unit

KiB
Stands forKibibyte
CategoriesUnits & Measurements

KiB stands for Kibibyte, a data unit abbreviation.

Exactly 1,024 bytes (2^10), the binary unit defined by the International Electrotechnical Commission in 1998 to end the ambiguity of "kilobyte". Linux tools, memory specifications and technical documentation use it.

Example: The page cache uses 4 KiB pages, so each one holds exactly 4,096 bytes.

Usage notes

The name blends kilo and binary and is pronounced "KIB-ee-byte". The IEC series continues with MiB, GiB, TiB, PiB and EiB, each 1,024 times larger than the last, and is now part of the international standard IEC 80000-13. Adoption is uneven: Linux utilities use it, while Windows labels the same quantity KB.

More data unit abbreviations

  • GB – Gigabyte
  • Gbps – Gigabits per second
  • GiB – Gibibyte
  • GT/s – Gigatransfers per second
  • KB – Kilobyte
  • kbps – Kilobits per second
  • lpi – Lines per inch
  • MB – Megabyte
  • MB/s – Megabytes per second
  • Mbps – Megabits per second
  • MiB – Mebibyte
  • MP – Megapixel

See all 36 data unit abbreviations →