About CarrySizer
What We Do
CarrySizer is a free carry-on baggage rules checker covering 120+ airlines worldwide. Enter your bag dimensions and weight, choose your airline and cabin class, and we instantly tell you whether your bag fits — no hunting through airline websites, no buried PDF fare rules.
We cover carry-on size limits, weight allowances, personal item rules, and the fees airlines charge when your bag is over limit. Our Route Compliance Checker lets you verify a multi-leg itinerary in one go, so you know exactly what to expect on every flight.
Who It's For
Frequent fliers who switch airlines often and can't remember every carrier's rules. Budget travelers determined to avoid gate-check fees. Families juggling bags for multiple passengers. Anyone who has ever stood at the boarding gate wondering whether their bag is going to make it overhead.
Carry-on fees at budget carriers can run $30–$70 each way. A quick check before you pack can save you more than a flight upgrade.
Our Mission
Airline baggage policy is deliberately hard to find. Rules are tucked inside fare condition PDFs, vary by booking class and route, and change without much notice. We exist to cut through that friction: one search, one clear answer, zero surprises at the gate.
We don't charge for access, and we don't require an account. The tool is free for every traveler, every time.
Data Quality
Every airline entry is manually researched from official airline websites, fare rules pages, and checked-baggage policy documents. We record the source URL and the date we last verified each entry. Data older than 12 months is flagged as stale and prioritized for review.
Airlines update their policies without warning. We do our best to keep pace, but we always recommend confirming critical details directly with your airline before travel. See our methodology page for the full picture.
Questions or corrections? hello@carrysizer.com