Display size. Comparison of screen sizes by width, height, diagonal, area, and aspect ratio.
On 2-D displays, such as computer monitors and TVs, the display size (or viewable image size or VIS) is the physical size of the area where pictures and videos are displayed. The size of a screen is usually described by the length of its diagonal, which is the distance between opposite corners. It is also sometimes called the physical image size to distinguish it from the "logical image size," which describes a screen's display resolution and is measured in pixels.
Optimal screen size and viewing distance[edit] The TV image is composed of many lines of pixels. Mobile screen sizes. Web Design Patterns for Mobile Devices - Design Patterns. The iOS Design Cheat Sheet Volume 2 - Ivo Mynttinen / User Interface Designer. 16:9 Aspect Ratio Calculator for content area width. Designers Toolbox Web Safe Area. Screen Aspect Ratio & Dimension Calculator.