Baggage dimensions explained
Learn how to read height, width and depth, calculate total linear dimensions and compare a packed bag with an airline rule.
General explanation only: there is no universal baggage allowance. The current rule for your airline, fare, route and operating carrier takes precedence.
Individual dimensions
A rule such as H×W×D gives a separate limit for each side. The letters describe the order in which the three measurements are displayed.
Total linear dimensions
A combined or linear dimension is the sum of height, width and depth. It matters only when the airline publishes a rule based on that sum.
Weight and piece count
Dimensions, weight and the permitted number of pieces are separate conditions. Meeting one condition does not automatically satisfy the others.
How to check a baggage limit
Use the published airline rule and the finished, packed bag for a like-for-like comparison.
Read the rule
- Check whether the airline gives three individual dimensions, a combined total, or both.
- Keep the published unit and note the displayed order of height, width and depth.
- Check whether the rule depends on fare, route, aircraft or operating carrier.
Measure the packed bag
- Pack and close the bag before measuring its finished outer dimensions.
- Measure each side at its widest point.
- Check the airline’s exact wording about wheels, handles and external pockets instead of assuming a universal rule.
- Weigh the bag separately when a weight limit also applies.
Compare like with like
- Compare every side separately when the airline publishes individual limits.
- Add the three sides only when the airline uses a combined or linear-dimension rule.
- Do not treat a conversion or your own calculation as a value published by the airline.
- Recheck the official airline source before travel.
Common questions
- How do I calculate total baggage size?
- Add height, width and depth in the same unit. For example, 50 cm + 35 cm + 20 cm equals a total size of 105 cm.
- Does a permitted total size replace individual side limits?
- No. A total-size rule and separate side limits are different conditions. Apply whichever conditions the airline actually publishes; if it publishes both, check both.
- What does H×W×D mean?
- It means height × width × depth and describes the display order. Multiplication is not required when you compare the three sides.
- Do wheels and handles count?
- There is no universal answer to rely on. Measure the finished bag and check how the airline defines its permitted dimensions, including any wording about protruding parts.
- Why does AirlineLimits not convert or derive missing airline limits?
- A converted or calculated value was not published by the airline and can introduce rounding or interpretation errors. We show exact published units and leave unsupported values unknown.