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Linear Inches Calculator (Airline Baggage)

Airlines size luggage by linear inches, which is just length plus width plus height added together. Enter your bag's three measurements to get the total and see if it clears the usual limits.

How to use
  1. Enter the bag's length, width, and height.
  2. Switch to centimeters if your tape measure is metric.
Preset
Linear size
45.0 in

Fits as carry-on AND checked bag

Linear centimetres
114.3 cm
Carry-on margin (45 in)
0.0 in
Checked margin (62 in)
17.0 in
Estimates for general information, verify important figures before relying on them.
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Reference ranges

LimitLinear inches
Typical carry-on45
Standard checked bag62
Oversize fee starts above62

Common questions

What does 62 linear inches mean?

It is the sum of a bag's length, width, and height. A 27 x 21 x 14 inch suitcase adds up to 62 linear inches, the common checked-bag ceiling.

What is the carry-on linear inch limit?

Most US airlines cap carry-ons around 45 linear inches, often stated as 22 x 14 x 9 inches.

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