Free 4k Wallpapers

The name "4K resolution" refers to a horizontal resolution of approximately 4,000 pixels.

The use of width to characterize the overall resolution marks a switch from previous television standards such as 480i and 1080p, which categorize media according to its vertical dimension.

Using that same convention, 4K UHD would be named 2160p.

The DCI 4K resolution standard, which has a resolution of 4096 x 2160 pixels (256:135, approximately a 1.9:1 aspect ratio).