It's calculated by adding together the outside length, width, and height of a suitcase or bag. For example, if your bag measures 24 inches long, 18 inches wide, and 20 inches high, its linear inches would be 62 (24+18+20=62).
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Suitcase size: all suitcase manufactures measure the size of the suitcase from the ground to the top of the carry handle, not the internal measurements of the bag.
The standard Max Size for most airlines is 62 inches / 158 cm, including any handles/wheels, which in a typical rectangular suitcase shape would be 30 x 20 x 12 inches.
Length + Width + Height = Total Linear Length. This number, the total of all three measurements that you took, must be less than or equal to the Maximum Linear Dimensions that your airline allows. Usually, that means the Total Linear Length cannot exceed 62 inches or 158cm for checked baggage.
Checked LuggageMost airlines will allow you to check one bag and have one carry-on bag. There is normally a maximum weight limit of 50 pounds per checked bag as well as a size restriction. The most common maximum size bag allowed is 62 linear (total) inches. A common size bag for checking through is: 27 x 21 x 14.
50 pounds is the usual weight limit. The largest checked international luggage size allowed is 62 linear (total) inches. Typically, a standard checked luggage size wavers around 27 x 21 x 14 inches. The universally accepted carry-on luggage size for a domestic flights (within the U.S.) is 22 x 14 x 9.
Measuring the size of your luggage isn't tricky. Most airlines require that your bag be 62 linear inches or less. Therefore, your bag's length, width and height cannot exceed 62 inches. This measurement includes the wheels and the handle of your luggage.
Checked LuggageThe most common maximum size bag allowed is 62 linear (total) inches. A common size bag for checking through is: 27 x 21 x 14. Airline carriers will allow overweight, oversize or additional baggage for additional fees.
Yes, you can check a 28-inch suitcase as long as it does not exceed the weight limit set by the airline. In order to be accepted as standard checked luggage the weight should be within the limit of up to 50 or 70 lbs. That being said, some airlines will accept oversized bags up to 126 linear inches (320 cm).
A small to medium-sized suitcase with a capacity of 40-60 liters should work for a 15kg limit. Go for a medium-sized suitcase with a capacity of 60-80 liters if you have a limit of 22kg.
Large suitcases have a height of around 75cm. These suitcases are ideal for a 2 to 3-week trip, like to the French Riviera. The suitcases have a capacity of about 75 to 91L, which equals to about 15 to 20kg of luggage.