A KiB, or Kibibyte, is a unit of digital information storage that equals 1,024 bytes. It is part of the binary system, which is commonly used in computing. The term "Kibi" comes from the binary prefix "kilo," which is based on powers of two rather than the decimal system. KiB is often used to measure file sizes, memory capacity, and data transfer rates in computing. It helps provide a more accurate representation of storage, especially when dealing with larger data sets. The use of KiB is part of a broader set of binary prefixes, including MiB (Mebibyte) and GiB (Gibibyte).