Will I fit? Here are the actual numbers.

SeatRuler is the fit reference for plus-size travel: verified numbers for airlines, cruise lines, theme parks, and trains and buses, collected from the operators' own pages wherever they exist, dated, and linked to every source. No diet talk. No judgment. Just what the policies actually say, and what to ask for.

Airlines · the flagship data

Narrowest published economy seat, by airline; inches between armrests

Each marker is an airline's narrowest published economy width, the planning number we lead with everywhere. Southwest Airlines is the narrowest in our data. Tap a marker for the full page, or compare all airlines in one table. How these are measured.

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Three honest things about how this site works. Every figure shows whose number it is, from "per the airline" down to clearly-badged community reports. Where an operator publishes nothing, we say "not published" and then ask them directly; their answers and their silences both go on the record, in the airline accountability table, the parks one, and the cruise one. And you are the verification network: the tip line takes corrections, measurements, and stories, every one read by a human, nothing published without consent.