Linear Inches Calculator
Calculate total linear inches (L+W+H) of your luggage or package. Free online airline baggage size checker for carry-on and checked luggage limits worldwide.
About This Calculator
Linear inches are the sum of an object's length, width, and height, expressed in inches. The formula is simple: Linear Inches = L + W + H. This measurement is most commonly used by airlines to determine whether luggage meets size requirements for checked baggage and carry-on items. It is also used by shipping companies to calculate package dimensions for transportation costs.
This linear inches calculator helps travelers, shippers, and anyone needing to measure object dimensions quickly and accurately. Simply enter your length, width, and height measurements in inches, and the calculator instantly computes the total linear inches. It also checks whether your dimensions fall within standard airline limits: 45 linear inches for carry-on luggage and 62 linear inches for checked baggage.
The linear inches system allows airlines to accommodate luggage of various shapes and sizes by focusing on total volume rather than any single dimension. This means a long thin bag and a short wide bag could both meet the 62 linear inch limit, as long as their combined dimensions do not exceed the threshold.
Regional Notes
United States: Major US airlines (American, Delta, United, Southwest) enforce 62 linear inches for checked bags and 45 linear inches (22×14×9 in) for carry-on. Oversized fees typically range from $75 to $200.
United Kingdom: British Airways, EasyJet, Ryanair, and Virgin Atlantic follow similar standards. Checked baggage limit is generally 62 linear inches (158 cm when converted). Carry-on limits vary from 44 to 48 linear inches.
India: Air India, IndiGo, SpiceJet, and Vistara enforce 62 linear inches for checked baggage and approximately 45 linear inches for cabin baggage. Domestic flights may have stricter weight limits.
Frequently Asked Questions
What are linear inches?
Linear inches are the sum of the length, width, and height of an object expressed in inches. The formula is L + W + H. Airlines use linear inches to determine if luggage meets size requirements for carry-on and checked baggage.
How do I calculate linear inches?
To calculate linear inches, measure the length, width, and height of your luggage or object in inches, then add the three measurements together. For example, a suitcase measuring 30 inches long, 18 inches wide, and 14 inches high has 30 + 18 + 14 = 62 linear inches.
What is the 62 linear inches limit for luggage?
The 62 linear inches limit is the standard maximum size for checked baggage on most airlines worldwide. This means the sum of length, width, and height must not exceed 62 inches. Airlines such as American Airlines, Delta, United, British Airways, and Emirates enforce this limit for checked bags.
What is the linear inches limit for carry-on luggage?
Carry-on luggage typically has a linear inches limit of 45 linear inches (22 x 14 x 9 inches) for most US airlines. European carriers such as Ryanair and EasyJet often allow slightly smaller dimensions. Always check your specific airline's size restrictions before traveling.
Do linear inches include wheels and handles?
Yes, linear inch measurements must include wheels, handles, external pockets, and any other protrusions. Airlines measure the total external dimensions of the bag including all accessories. A bag that fits the body but has large wheels may still exceed the linear inch limit.
What happens if my luggage exceeds the linear inch limit?
If your luggage exceeds the airline's linear inch limit, you may be charged an oversized baggage fee, or the airline may refuse to accept the bag. Oversized fees can range from $75 to $200 or more depending on the airline and route. Consider shipping oversized items separately.
How are linear inches measured at the airport?
Airport staff use a standard measuring tape or a baggage sizer to measure linear inches. They measure the length, width, and height at the widest points including handles and wheels. Some airlines have automated baggage drop systems that scan dimensions digitally.
Are linear inch limits the same for all airlines?
No, linear inch limits vary by airline, fare class, and route. US airlines generally follow 62 linear inches for checked bags and 45 for carry-on. Budget airlines like Spirit and Frontier have stricter limits. International carriers may have different standards, so always verify with your airline before traveling.