3840×2160

3840×2160 is a display resolution commonly referred to as 4K UHD. It comprises 3,840 horizontal pixels and 2,160 vertical pixels, totaling 8,294,400 pixels. The aspect ratio is 16:9, making it the standard format for most consumer televisions, computer monitors, and other display devices marketed as “4K.”

The term UHD distinguishes this resolution from cinema-oriented 4K, which uses 4,096×2,160 pixels (DCI 4K) and a slightly different aspect ratio. UHD’s 3840×2160 configuration is optimized for home entertainment and consumer electronics, where 16:9 content is common and compatibility with existing HD infrastructure is a priority.

Adoption and technology have progressed through several milestones. UHD was standardized for consumer devices in the early to mid-2010s, with interfaces such as HDMI 2.0 and DisplayPort supporting 4K at 60 Hz. More recent developments include HDMI 2.1, which enables higher refresh rates (up to 120 Hz at 4K) and features like dynamic HDR. Content for 3840×2160 often uses compression codecs such as HEVC/H.265 or AV1, and HDR formats like HDR10 or Dolby Vision to improve color and contrast.

Applications include 4K Ultra HD televisions, computer monitors, laptops, gaming consoles, and streaming devices. Many broadcasts and streaming services offer 4K content, though some material is upscaled from lower resolutions. Color depth commonly ranges from 8-bit to 10-bit, with wide color gamuts including Rec.2020 or DCI-P3 in higher-end displays.