# Travel >> Travel Preparation >> Travel Regulations

How to Measure Carry-On Luggage With Handles & Wheels

When it comes to carry-on luggage, airline rules and restrictions can sometimes be a bit stringent. Knowing an airline’s specific carry-on guidelines before you step in line to board a plane can help you avoid the headaches and extra fees usually associated with carry-on baggage that is too large or too heavy. A few simple measurements will help ensure that your carry-on meets an airline’s regulations and that you reach your destination on time. Carry-on luggage rules can vary from airline to airline; therefore it is important to check with your airline to determine their policy.

Tape measure
Pen or pencil
Paper

Instructions

- 1
  Determine your airline’s rules for carry-on luggage dimensions. Most flights within the U.S. require that carry-ons be no more than 45 total linear inches, although this measurement may vary depending on the airline.
- 2
  Measure every dimension of a carry-on using a tape measure. Determine the length, width, and height of the luggage.
- 3
  Write down the numbers using inches, not feet, as airlines generally use inches to denote luggage size. Include both wheels and handles in your measurements.
- 4
  Add all three measurements -- length, width, and height -- together to determine your bag’s total linear dimensions.
- 5
  Fill any exterior, expandable pockets found on the luggage. Measure the bag again to make sure the full pocket does not protrude enough to cause the bag’s dimensions to exceed your airline’s rules. Remove items as needed to meet the dimensions required for carry-on luggage.