What is kilobyte (KB or Kbyte*)? - Definition from Whatis.com

Definition

kilobyte (KB or Kbyte*)

As a measure of computer memory or storage, a kilobyte (KB or Kbyte*) is approximately a thousand bytes (actually, 2 to the 10th power, or decimal 1,024 bytes).

* Note: In international English outside the U.S., the equivalent usage is sometimes "kbyte".

This was last updated in July 2000

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