MyBagFits answers one narrow question well: will your bag be allowed on the plane, and what will it cost you if it isn't. It is a set of free calculators — carry-on and personal-item size checkers, a checked-bag fee calculator, a layover-time checker, a packing-list generator and a handful of others — plus a reference page for each airline we have verified.
There is no sign-up, nothing to install, and no account. Every tool runs in your browser; we do not receive the dimensions of your suitcase or the dates of your trip.
The airline figures are read directly from each airline's own published baggage page, and every airline page on this site shows that source URL and the date it was last checked. Nothing is taken from a blog, a comparison site or a luggage retailer, because those are exactly where wrong numbers propagate from.
Other datasets are sourced the same way and cited the same way:
We say so. This is the rule that shapes the site more than any other, and it costs us pages.
Delta and Southwest publish no numeric personal-item size — their pages describe what fits under the seat and give examples. Most sites quote a number anyway. We do not, because a traveller who measures a bag against an invented figure and is charged at the gate has been actively misled.
The same rule keeps airlines off the site entirely. Qatar Airways and Hawaiian are missing not because we forgot them but because we could not read their published figures from an authoritative source, and Spirit Airlines is absent because it ceased operations on 2 May 2026 — publishing live baggage limits for an airline that no longer flies would be worse than publishing nothing.
Where a figure is less certain than the rest, we mark it on the page rather than in a file only we would read.
They are planning tools, not authorisation. Airlines change their limits, enforcement varies by airport and by the person at the gate, and entry to a country is decided by that country's border officers. Every result carries a line telling you to confirm with the airline or the embassy, and that line is not a formality.
Dimensions are given as the airline publishes them, including wheels and handles. A bag sold as a "22-inch carry-on" frequently measures more than 22 inches once its wheels are included, which is the single most common way a bag that "should" fit does not.
Some outbound links are affiliate links, and the site may show advertising. Both are kept below the answer: no ad and no affiliate link renders above the result a tool produces, and a check in our build fails the deploy if one ever does. Affiliate links carry rel="sponsored nofollow" and sit under a disclosure.
Nothing we earn from changes a result. The verdict a calculator gives you is computed from your inputs and the published data, and there is no path in the code by which a commercial relationship could alter it.
If a figure here is wrong, we want to know — a wrong dimension on this site can cost somebody a real fee at a real gate. Write to hello@mybagfits.com with the page and the airline's own source, and we will check it and correct it.