Luggage Linear Inches Calculator

This calculator works out the linear size of a suitcase or bag. Enter its length, width and height in inches, measured including wheels and handles; you get the total linear inches and the same total in centimetres, the figure airlines compare with their size limit.

Formula

Linear inches = length + width + height. Linear centimetres = linear inches × 2.54.

• Measure the outside of the bag at its widest points, with wheels, feet and handles included.

Worked Example

A carry-on measuring 22 × 14 × 9 inches.

1. Linear size = 22 + 14 + 9 = 45.0 in
2. In centimetres: 45 × 2.54 = 114.3 cm

How to read the result

Compare the total with the limit your airline publishes for your ticket and route. Many carriers also give a maximum for each side, so check the three measurements separately as well as the total. Weight limits are separate.

Limits and common mistakes

• Limits differ by airline, fare and route, and change; check your airline’s own page before you travel.
• Soft bags that bulge when packed measure larger than when empty; measure them full.
• Rounding each side down can push a bag over the limit at the gate.

Frequently Asked Questions

What are linear inches?

The length plus the width plus the height of a bag.

Do wheels and handles count?

Airlines usually measure the bag as it is, with wheels and handles.

How many centimetres is 62 linear inches?

About 157.5 cm.

Is a 45 linear inch bag a carry-on?

Often, but it depends on the airline and on each side’s limit, so check with the carrier.

in bl | Length (incl. wheels) | in | 22 | 0 | 200
in wd | Width | in | 14 | 0 | 200
in ht | Height (depth) | in | 9 | 0 | 200
out s | Linear size | in | bl + wd + ht | 1
out cm | Linear size | cm | s * 2.54 | 1