Question 1

Where do the baggage numbers come from?

Accepted Answer

Every record is pulled from the carrier's own "baggage allowance" page on its official site (e.g., airchina.com.cn /content/airchina/zh-cn/information/baggage, united.com /en/us/fly/travel/baggage.html, emirates.com /english/before-you-fly/baggage). The source URL is shown in the table next to every airline so you can click through and verify in one tap. We re-check the numbers on each release and pin the snapshot date at the top of the page. Airlines do quietly change limits — especially low-cost carriers — so for a critical booking always confirm on the airline's own site within 24 hours of departure.

Question 2

Is the excess-fee estimate the exact amount I''ll pay?

Accepted Answer

It is the per-kilogram rate the airline publishes for excess weight at the airport counter (also called "heavy bag fee" or "excess baggage fee"). Real charges can differ for three reasons: oversize charges stack on top of overweight charges, prepaid online excess is cheaper than at-the-counter (often 30 to 50 percent less), and international itineraries with multiple carriers use the most restrictive segment's policy. The estimator gives you a realistic ceiling for what you'd pay if you walked up with the bag as-is. If you can prepay through the airline app the night before, you'll save real money.

Question 3

Carry-on weight limit — do they actually weigh it?

Accepted Answer

Depends on the airline and the airport. North American carriers (United / Delta / American / Southwest / Air Canada) almost never weigh carry-on for domestic flights — the size sizer at the gate is the only enforcement. Asian and European carriers (Cathay / ANA / Lufthansa / Air France / Singapore) do weigh it, especially on long-haul or codeshare flights, and the limits (often 7 to 8 kg) are stricter than people expect. Low-cost carriers (Spring / AirAsia / Scoot / Ryanair) weigh it aggressively and the gate-check fee is brutal — 200 RMB or more. The rule of thumb: if your ticket says "low-cost" or "basic economy", assume the carry-on will be weighed.

Question 4

What''s the difference between piece concept and weight concept?

Accepted Answer

Piece concept (used by US domestic, transpacific, and most premium long-haul itineraries): you get N pieces, each up to a per-piece weight limit, each up to a per-piece dimension limit. Going over weight on a single bag triggers a flat heavy-bag fee (often 100 to 200 USD per bag) regardless of how many kg over. Weight concept (used by most intra-Asia and intra-Europe economy flights): you get a total weight allowance (often 20 to 30 kg), and you can split it across as many bags as fit the size limit, with a per-kg excess fee for going over the total. The tool flags which concept each route uses so you can plan accordingly — for piece-concept routes, pack to balance; for weight-concept, just stay under the total.

Question 5

Why is business class baggage so much more than economy?

Accepted Answer

The difference reflects what the carrier thinks business travelers actually carry: long stays, multiple suits, sample cases, hardware demos. Most full-service airlines give business class two or three pieces of 32 kg each (versus 23 kg in economy), a larger carry-on (often 10 to 12 kg vs 7 kg), and either no excess fee for moderate overage or a much higher cap before fees kick in. First class typically adds another piece on top, sometimes with a higher per-piece weight ceiling. If you're upgrading with miles, baggage is one of the most underrated benefits — a single avoided overweight charge can be worth 100+ USD.

Question 6

Does the checker work offline / does it send my inputs anywhere?

Accepted Answer

It works fully offline. The entire 50+ airline catalog, every cabin class, every dimension and weight value, and the excess-fee table all ship inside the page bundle — no API calls, no analytics on which airline you picked, no cookie. The bag weight you type stays in your browser; nothing is logged. Load the page once over wifi at home and you can pull it up at the check-in counter on airplane mode to double-check the limit before the agent does.

Question 7

My airline isn''t on the list. What should I do?

Accepted Answer

The catalog covers the carriers responsible for roughly 80 percent of international and major-domestic routes by passenger volume. If yours is missing (most likely a regional or charter operator), the safest fallback is the airline's own "baggage" page — that's where our data comes from anyway. As a rough guide, intra-Asia and intra-Europe economy almost always converges on 20 kg checked + 7 kg carry-on, US domestic main cabin is one piece of 23 kg checked (often paid) + 1 carry-on + 1 personal item, and Middle East long-haul economy is 30 kg checked. If you want a specific airline added, the related Cooking Unit Converter and Unit Converter pages explain how we source data.

Cabin class	Carry-on	Checked	Excess per kg
Economy	5 kg · 55×40×20 cm	1 × 23 kg · 158 cm	¥150
Premium Economy	5 kg · 55×40×20 cm	2 × 23 kg · 158 cm	¥150
Business	8 kg · 55×40×20 cm	2 × 32 kg · 158 cm	¥200
First	8 kg · 55×40×20 cm	3 × 32 kg · 158 cm	¥200

Airline Luggage Allowance Checker — 50+ Carriers, Carry-on and Checked Rules, Excess Fee Estimate

Full allowance — all 4 cabin classes

All 50+ airlines in this catalog

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Airline Luggage Allowance Checker — 50+ Carriers, Carry-on and Checked Rules, Excess Fee Estimate

Full allowance — all 4 cabin classes

All 50+ airlines in this catalog

What this tool does

Tool details

How to use

1. Input

2. Process

3. Copy / Download

How Airline Luggage Allowance Checker fits into your work

Calculation jobs

Calculation checks

Good next steps

FAQ

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