4K
4K, 4-K or 4k may refer to:
4000 (number)
Four kibibytes (4 × 1024 bytes, better written 4 KiB)
4K disk sector size (Advanced Format)
4K demoscene compo, a computer art competition using programs limited to 4 kibibytes
The Java 4K Game Programming Contest
4K resolution, a collective term for digital video formats having a horizontal resolution of approximately 4,000 pixels
4K UHDTV, an ultra-high-definition television format
4K, the IATA airline code for Askari Aviation
4K, an alternative name for Cuatro Cabezas (Four Heads), an Argentine multimedia production company.
4K, model of Toyota K engine
4K, the production code for the 1976 Doctor Who serial The Brain of Morbius
4KScore test for prostate cancer screening
Kenn Borek Air, a Canadian airline IATA code
4K, a song by Darell, El Alfa, and Noriel
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