bytes.
Although the term kilobyte is sometimes used to refer
to 1024 bytes, such usage is deprecated in favor of the standard SI naming convention
of 1 kilobyte being equal to 
bytes.
Kibibyte
See also
Byte, Exbibyte, Gibibyte, Kilobyte, Mebibyte, Pebibyte, TebibyteExplore with Wolfram|Alpha
References
National Institute of Standards. "Prefixes for Binary Multiples." http://physics.nist.gov/cuu/Units/binary.html.Referenced on Wolfram|Alpha
KibibyteCite this as:
Weisstein, Eric W. "Kibibyte." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Kibibyte.html