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Linear inches calculator for checked luggage

Updated 2026-09-24. Researched from airline pages and published specifications.

Quick answerLinear inches are the bag's length plus width plus height, measured outside with wheels and handles. A 28 x 19 x 12 inch suitcase is 59 linear inches, under the 62 inch (158 cm) standard checked limit that American, Delta, Southwest, Alaska, JetBlue, Spirit and Air Canada publish.

Limits change; confirm with your airline before you fly. Every figure here links to the airline page it came from.

Linear inches calculator for checked luggageAirline-published limits
Linear size 59 in (149.9 cm)
American Airlines (62 in)standard size
Delta Air Lines (62 in)standard size
Southwest Airlines (62 in)standard size
Alaska Airlines (62 in)standard size
JetBlue (62 in)standard size
Spirit Airlines (62 in)standard size
Frontier Airlines (62 in)standard size
Allegiant Air (80 in)standard size
Breeze Airways (62 in)standard size
Air Canada (158 cm)standard size
WestJet (157 cm)standard size
Lufthansa (158 cm)standard size
Air France (158 cm)standard size
KLM (158 cm)standard size
SWISS (158 cm)standard size
Turkish Airlines (158 cm)standard size
Emirates (150 cm)standard size
Qantas (158 cm)standard size
Singapore Airlines (158 cm)standard size

Within the standard checked size at 19 of 19 airlines that publish a linear limit.

Weight is a separate limit: a bag can be within 62 inches and still pay an overweight fee.

How it works: linear size = length + width + height, measured at the widest points including wheels, handles and pockets

Most carriers set the standard checked bag at 62 linear inches or 158 cm. Emirates uses 150 cm on its piece-concept routes, and Allegiant allows 80 inches.

Checked suitcases, with their listed outside size

Frequently asked questions

What are linear inches on luggage?

Linear inches are the sum of a bag's length, width and height, measured on the outside at the widest points with wheels, handles and pockets included. Airlines use the total rather than each side because a checked bag can be any shape. The standard checked limit at most US airlines is 62 linear inches, which is 158 cm.

What size suitcase is 62 linear inches?

Any combination adding to 62 inches or less. Typical examples are 27 x 21 x 14 inches, or 28 x 19 x 12 inches at 59 linear inches. The 28 to 30 inch suitcases in our catalog that list wheels-included sizes all measure 63 to 67 linear inches, over the 62 inch limit, which triggers oversize fees at most airlines.

Is 158 cm the same as 62 inches?

158 cm is 62.2 inches, so the two are the same limit rounded differently. Air Canada, KLM, Lufthansa, Turkish, SWISS, Air France and Singapore publish 158 cm; Delta, WestJet and JetBlue publish 157 cm or 157.48 cm alongside 62 inches.

Researched, not professional advice. Airline limits and fees change; confirm with your airline before you fly.

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