So, how do you actually measure your carry-on bag? It's quite simple, really! Just use a tape measure or a ruler to get the dimensions. Make sure to measure the length, width, and height of the bag, including any wheels or handles.
And, here's a pro tip: measure your bag when it's empty, not when it's all packed up. That way, you'll get an accurate measurement, and you can avoid any surprises at the airport.
Now, I know some of you might be thinking, "But, I have a non-standard bag that doesn't fit the usual dimensions." Don't worry, my friend! Just check with the airline ahead of time, and they'll let you know if your bag is okay to bring on board.
How to Measure Luggage: 10 Steps (with Pictures) - wikiHow