A medium-sized monitor has a standard size. 24 inches, or a 61cm, is the standard diameter for most usage situations. Monitors of 23 and 25 inches are also considered medium-sized. Because you sit closer to a monitor than a television, 23 to 25 inches is a good size for daily use, amateur photo editing, and watching movies. If you want more screen space for gaming or professional photo editing, go for 27 inches or larger. To ensure you work ergonomically, choose an adjustable, tiltable, and rotatable screen. Want to work the entire day without becoming tired? You prevent strained eyes and sleeping problems with a built-in blue light filter.