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A kilobyte is a measurement unit for digital information. When we need to determine the total size of the data storage on a hard drive then 1 kilobyte is equal to 1000 bytes. When it comes to measuring random access memory (RAM) capacity then 1 kilobyte is equal to 1024 bytes. Kilobyte is suitable for measuring the size mainly on some documents, or worksheets or web pages or smaller images. Otherwise larger measurement units such as megabyte (1MB = 1024KB) and a gigabyte (1GB = 1 048 576) should be used to define the size of larger files or larger storage units.


Kilobyte Definition, Confusion, and Application

Sometimes depending on the operating system a uses install on his computer it is possible for some confusions to occur. For example – if there is a file with a size of 65 563 bytes a MAC OS X would recognize the file’s size as 66KB because the operating system is rounding the value to the nearest 1000. On the other hand, Microsoft Windows would do a dividing by 1024 and show the file size as 64KB. Things can get even trickier when it comes to purchasing hard disk drives. If you buy a hard drive with 500GB size this will mean that it contains 500 000 000 kilobytes, instead of 524 288 000KB. This is why Microsoft Windows will detect the total volume after formatting to be around 470 gigabytes. That is why the use of kilobyte is more suitable for smaller flies where the difference between the two values will be negligible.

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