How do I calculate linear inches?

To calculate linear inches, simply determine the length, width and height of a baggage item and add them together. You need a tape measure or ruler and a calculator.

1. Measure the length, width and height of the luggage

   Using a tape measure or ruler, measure the length, width and height of the outside of the luggage in inches. Include objects such as wheels and outer compartments when measuring.

2. Find the sum of the three measurements

   Using a calculator, add the length, width and height together. The total is the linear inches measurement of the luggage.

3. Know your limits and fees

   Linear inches are used in the travel industry to impose restrictions for carry-on and checked luggage. Find out about any restrictions and additional fees in advance.