If you've been looking at a new TV or monitor, it's likely you've heard mentions of "4K" and "UHD," or Ultra High Definition. Here's what they really mean.

4K almost always means the TV has 3,840x2,160 pixels (the "building blocks" of a TV image). UHD stands for "Ultra High Definition," also known as UltraHD, but basically means 4K.

When used in a home context, 4K/UHD means the TV's screen has a minimum resolution of 3,840 pixels wide and 2,160 pixels high, making it the equivalent to two 1080p screens in height and two in ...

But now that "4K" has gained traction as a term used to describe TVs and content, "2K" is becoming increasingly common as shorthand for the 1080p resolution used by most HDTVs, as well as Blu-ray.

4K UHD TVs are everywhere these days, but what exactly makes a TV a 4K TV? We wrote up this guide to teach you everything you need to know about the technology.

Plus, all Warner Bros. movies released this year and going forward will be streaming in 4K UHD when they arrive on Max following their theatrical windows. Right now, you can stream recent releases ...

Epson's $2,399 Pro Cinema 4050 4K Pro-UHD Projector promises, and delivers, image quality that will satisfy most video enthusiasts for traditional home theater settings, plus sufficient brightness ...