Screen sizes refer to the dimensions of a display, typically measured diagonally from one corner to the opposite corner. They are commonly expressed in inches and can vary widely across devices, including smartphones, tablets, laptops, and televisions. Larger screens often provide a more immersive viewing experience, while smaller screens are more portable and convenient for on-the-go use. Different screen sizes cater to various needs and preferences. For instance, a smartphone may have a screen size ranging from 5 to 7 inches, while a laptop might range from 11 to 17 inches. Televisions can be even larger, often exceeding 50 inches, making them suitable for home entertainment.