Laptops are designed to be portable, but their portability depends on the size and weight of the device. Standard laptop sizes can be divided into five categories: ultrabooks, ultraportables, thin and light, desktop replacements, and lurgables.

The listed weight is for the laptop only and not a travel weight, so expect to add between 1 and 3 pounds for accessories and power adapters. The listed numbers are broken down by width, depth, height, and weight:

Intel worked with manufacturers to release ultrabooks. Originally, these were the most portable systems with displays 13 inches or smaller, but have since moved to the larger 14- and 15-inch display sizes with thinner and lighter profiles than other laptops with similar displays.

Chromebooks are similar in concept to ultrabooks, but they are generally more affordable and designed to run Chrome OS instead of Windows. Now on the market are 2-in-1 computers that are essentially systems that can function as either a laptop or a tablet, coming in two rough sizes and weights depending on which mode is used.