Measure the packed bag, not the empty shell
Use the widest outside points of the bag. A soft backpack may compress, but the checker does not assume compression or ignore an oversized edge.
Measure the bag as you will bring it to the airport.
Personal item checker
Enter the outside dimensions of your packed bag, including handles, wheels, and pockets. CabinFit checks all six possible orientations against the selected airline rule.
Dimension Check
Airline limit
40 x 30 x 20 cm
Ryanair · Personal Item
Official airline sourceSource checked · Sep 13, 2026
What was checked?
Each check covers the base adult allowance on the linked page. Your route, cabin, benefits or operating carrier may change the allowance.
Enter dimensions to check
Add your packed bag dimensions to compare them with this airline rule.
Official sources
Published airline rules stay one click away.
Last checked
Dates are visible before you trust a result.
Six orientations
Length, width, and height are rotated before matching.
Your saved checks
Name a bag once, reopen the exact measurements, or compare it again. These checks stay only in this browser.
Save a completed result to build a small, private list of the bags you actually travel with.
CabinFit checks all six possible orientations
A bag listed as 40 x 30 x 20 cm may still fit a 30 x 40 x 20 cm airline rule when it can be turned. The result is still a dimensional check, not a guarantee of acceptance.
Browse airline rules
Turn the same packed bag before deciding.
CabinFit tries every length, width, and height orientation against the selected airline rule.
What counts as a personal item?
A personal item is the smaller bag that must fit under the seat in front of you — a backpack, laptop bag, handbag, or underseat duffel. Published limits typically range from 40 x 30 x 20 cm up to about 45 x 36 x 25 cm.
Some basic fares include an underseat item, but that is not universal. Check both the published dimensions and the allowance shown on your booking.
Published personal item sizes for popular airlines
Computed live from CabinFit's source-matched dimension catalogue. Every row links to the airline's full rule page with the official source and source-match date.
| Airline | Max size (cm) | Max size (in) | Weight | Fare | Last checked |
|---|---|---|---|---|---|
| Ryanair | 40 x 30 x 20 cm | 15.7 x 11.8 x 7.9 in | Weight not listed | Basic | Sep 13, 2026 |
| easyJet | 45 x 36 x 20 cm | 17.7 x 14.2 x 7.9 in | Max 15 kg | Standard | Sep 13, 2026 |
| Wizz Air | 40 x 30 x 20 cm | 15.7 x 11.8 x 7.9 in | Max 10 kg | Basic | Sep 13, 2026 |
| Lufthansa | 40 x 30 x 15 cm | 15.7 x 11.8 x 5.9 in | Weight not listed | All listed cabins | Sep 13, 2026 |
| United Airlines | 43 x 25 x 22 cm | 16.9 x 9.8 x 8.7 in | Weight not listed | Standard | Sep 13, 2026 |
| Frontier Airlines | 45.7 x 35.6 x 20.3 cm | 18 x 14 x 8 in | Max 35 lb | Basic | Sep 13, 2026 |
| Turkish Airlines | 40 x 30 x 15 cm | 15.7 x 11.8 x 5.9 in | Max 4 kg | Economy / Business | Sep 13, 2026 |
| Pegasus Airlines | 40 x 30 x 15 cm | 15.7 x 11.8 x 5.9 in | Max 3 kg | International/Cyprus Light underseat bag | Sep 13, 2026 |
| British Airways | 40 x 30 x 15 cm | 15.7 x 11.8 x 5.9 in | Weight not listed | Standard | Aug 10, 2026 |
| Air France | 40 x 30 x 15 cm | 15.7 x 11.8 x 5.9 in | Weight not listed | All cabins | Aug 7, 2026 |
| KLM | 40 x 30 x 15 cm | 15.7 x 11.8 x 5.9 in | 12 / 18 kg combined across personal item + hand baggage (by cabin) | All ticket types | Sep 13, 2026 |
| Iberia | 30 x 40 x 15 cm | 11.8 x 15.7 x 5.9 in | Weight not listed | Standard | Sep 25, 2026 |
| Vueling | 40 x 30 x 20 cm | 15.7 x 11.8 x 7.9 in | Weight not listed | All bookings | Aug 7, 2026 |
| Norwegian | 30 x 40 x 20 cm | 11.8 x 15.7 x 7.9 in | Max 10 kg | LowFare | Aug 7, 2026 |
| SAS | 40 x 30 x 15 cm | 15.7 x 11.8 x 5.9 in | Weight not listed | Standard cabin allowance | Aug 7, 2026 |
| Finnair | 40 x 30 x 15 cm | 15.7 x 11.8 x 5.9 in | Max 8 kg | All passengers | Aug 7, 2026 |
| ITA Airways | 30 x 40 x 15 cm | 11.8 x 15.7 x 5.9 in | Weight not listed | Standard accessory | Aug 7, 2026 |
| Austrian Airlines | 40 x 30 x 15 cm | 15.7 x 11.8 x 5.9 in | Weight not listed | All listed cabins/fares | Aug 7, 2026 |
| Swiss | 40 x 30 x 15 cm | 15.7 x 11.8 x 5.9 in | Weight not listed | All listed fares | Aug 7, 2026 |
| TAP Air Portugal | 40 x 30 x 15 cm | 15.7 x 11.8 x 5.9 in | Max 2 kg | All cabins | Aug 7, 2026 |
Common questions before you pack
There is no universal size — each airline publishes its own underseat limit, most falling between 40 x 30 x 20 cm and 45 x 36 x 25 cm. The table above shows current published limits for popular airlines.
Yes — any bag type qualifies as long as it fits the published dimensions when packed. A soft backpack that bulges past the limit counts as oversized at the sizer.
Not always. Personal-item entitlement can vary by airline, fare, route and ticket conditions. Confirm the allowance on your booking and the official airline page.
A personal item is intended for the space under the seat; a carry-on is the larger bag for the overhead bin. Whether either bag is included is a separate fare decision.