Determining the dimensions of luggage involves obtaining its height, width, and depth, typically expressed in inches or centimeters. This process usually requires a measuring tape or ruler, and accuracy is key for compliance with airline restrictions. For instance, a common carry-on size might be 22 inches high, 14 inches wide, and 9 inches deep.
Knowing the precise size of luggage is beneficial for several reasons. It ensures adherence to airline regulations, preventing potential gate check fees or the need to ship the bag separately. Furthermore, it aids in efficient packing by allowing travelers to select appropriately sized items and maximize space. Historically, consistent sizing standards have simplified air travel, enabling smoother transitions through airports and reducing confusion among passengers.