4K, 4-K or 4k may refer to: *

4000 (number) 4000 (four thousand) is the natural number following 3000 (number)#3900 to 3999, 3999 and preceding 4001. It is a decagonal number. Selected numbers in the range 4001–4999 4001 to 4099 * 4005 – triangular number * 4007 – safe prime * 401 ...

* 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 4K resolution refers to a horizontal display resolution of approximately 4,000 pixels. Digital television and digital cinematography commonly use several different 4K resolutions. In television and consumer media, 38402160 (4K Ultra-high-definitio ...

, 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

See also