4K vs. UHD: What's the Difference?

Ultra high-definition, or UHD, and 4K are two terms that are often used interchangeably to denote a monitor or TV that has a resolution of around 4,000 horizontal pixels. However, while display manufacturers might like to chop and change the terms, they are, in fact, two distinct terms with different connotations. Where a 4K display's specific resolution might vary slightly depending on the form factor, it is only used for that one range of "4K" resolutions. UHD can be used to denote "8K" resolution, too.

4K vs. UHD

Technically, 4K is a professional standard with a resolution of 4,096 by 2,160 pixels. However, today and in most colloquial uses, it is used for the more common "4K UHD" standard that most displays have adopted, which is 3,840 by 2,160, or four times 1080p. It's not true 4K in the original sense of the ...