How Do You Measure Linear Inches for Luggage?
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Measure linear inches for luggage by adding up the measurements of a suitcase’s height, width and depth and comparing the result to an airline’s requirements. Airlines typically limit the size of carry-on luggage based on measurements in linear inches.
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Measure the suitcase
Use a tape measure or ruler to measure the height, width and depth of your suitcase.
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Add the measurements
Add together the height, width and depth measurements. The total number is the linear measurement of the suitcase.
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Compare the measurements to the airline’s requirements
Check the carry-on requirements of the airline on which you plan to fly. Most airlines allow carry-on luggage with a maximum linear measurement of 45 inches, but some airlines set their own standards.
