25inch

25inch refers to a measurement of the diagonal length of a rectangle, most commonly used to describe the size of computer monitors, televisions, or other display screens. The unit inch equals 2.54 centimeters, so a 25inch diagonal is 63.5 centimeters. The label describes the screen’s diagonal, not its width or height; those dimensions depend on the display’s aspect ratio.

In practice, the width and height vary with aspect ratio. For a 25inch screen with a 16:9 aspect ratio, the approximate width is 21.8 inches (55.4 cm) and the height is 12.2 inches (31 cm). Other aspect ratios yield different dimensions; for example, a 16:10 display will be taller, while a 4:3 display will be closer to a square.

History and usage: 25inch displays were more common in the late 1990s and early 2000s for CRTs and early LCDs. In contemporary consumer electronics, 25inch panels are less common than 24- or 27-inch models, but the size persists in some mid-size monitors, multimedia displays, or specialized industrial panels.

Related topics include display size, diagonal measurement, and screen aspect ratio.