Will my chair fit?
Tell it which airline you are flying and roughly what your chair is. It answers for that airline: what their published rules actually say about your chair, and just as importantly, what they have never said.
Nothing you type leaves your device. There is no account, no cookie and no server — the whole check runs in your browser, and your details are saved only on this device so you do not have to type them twice.
Your chair card
Ground staff ask the same questions every time, and what they actually want is a piece of paper. Fill in the rest below and print it. Tape one copy to the chair, keep one, hand one over.