One laptop from Sager comes with a 20-inch screen, making it one of the largest on the market as of 2014. Most laptops available in the market in 2014 have 13- to 16-inch screens. Some of the largest laptop screens available for purchase off-the-shelf come with 17.3-inch screens.
By definition, the smallest screen available on a laptop is 11.6-inches. Any screens smaller than this classify the device as a netbook. Laptops with screens that measure 16-inches and over can be classified as desktop replacement devices. Most laptops with 16-inches and above screen sizes have specifications that match average desktop computers.