UHD stands for Ultra High Definition (or Ultra HD, for shorter) and is a type of display resolution that has 3840 x 2160 pixels. This resolution is also commonly referred to as 4K resolution. Resolution explains how many pixels a display has in length x width format (the more, the better when choosing a PC monitor).
Right now, UHD (or 4K) is the highest popular resolution for monitors, games, movies and TVs. There are a few devices with 5K or 8K resolutions.
Common Monitor Resolutions:
|5K||5120 x 2880|
|4K||3840 x 2160 (typical monitor resolution)4096 x 2160 (official cinema resolution)|
|Ultra HD (UHD)||3840 x 2160|
|Quad HD (QHD) aka Wide Quad HD (WQHD)||2560 x 1440|
|2K||2560 x 1440 (typical monitor resolution)2048 x 1080 (official cinema resolution)|
|WUXGA||1920 x 1200|
|Full HD (FHD) aka 1080p aka HD||1920 x 1080|
|HD aka 720p||1280 x 720|
This article is part of the Tom's Hardware Glossary.