Desktop computer monitors are available in a range of sizes, from as small as 13 inches to as big as 50 inches, or bigger if you use a TV as a monitor. Laptop screens can be as small as 10 inches to as big as 21 inches. The bigger the monitor or screen size, the higher the cost of the monitor or laptop. For desktops and laptops, the size of the monitor or screen is the distance from the top left corner to the bottom right corner, in inches.
Refer to the red line below：
