(symbol: k) is a prefix
in the SI
and other systems of units denoting 103
or 1,000. For example:
Officially adopted in 1795 (though in common use before that), it comes from the Greek χίλιοι ("khilioi"), meaning thousand.
Use in computing
In binary computing
, kilo- does not always denote 1,000 but is sometimes equal to 1,024 (210
), most often when discussing memory
and file sizes. See binary prefix
for more details.