Luggage Weight Calculator

How this is calculated

⚠️ THE EMPTY SUITCASE IS PART OF YOUR ALLOWANCE AND IT IS THE THING PEOPLE FORGET. Checked baggage is weighed as it goes on the belt, case included. A hard-shell case can weigh four or five kilograms empty, which is a fifth of a typical 23 kg allowance gone before a single item is packed. The tool reports that share as its own figure, because a lighter case is usually the cheapest kilogram anyone can buy. ⚠️ THE ALLOWANCE IS AN INPUT, NOT A NUMBER THIS TOOL ASSUMES. Baggage allowances are set by the airline and vary by carrier, by route, by fare class and by how you booked - and they change. Twenty-three kilograms is common on many international economy tickets and is nothing like universal. Take the figure off your own booking confirmation, which is the only source that is definitely right for your flight, and remember that a codeshare can carry the operating airline's rules rather than the one you booked with. WEIGH IT YOURSELF BEFORE YOU GO. Bathroom scales work: stand on them holding the bag, stand on them without it, take the difference. A luggage scale is more comfortable and cheap. The figures you enter here are estimates until something has been on a scale, and an estimate is exactly what gets people caught - overweight charges are typically assessed per bag at the desk, and they are deliberately unpleasant. KEEP SOMETHING BACK FOR THE WAY HOME. This is the second half of the problem and it is invisible on the outbound. A bag that is exactly on the limit leaving cannot bring anything back. The reserve field is there so the headroom you see is the honest one - set it to whatever you expect to acquire, and if you genuinely buy nothing, you have simply travelled light. HAND LUGGAGE IS USUALLY A SEPARATE ALLOWANCE with its own limit, and often a size limit that bites before the weight one does. Run the tool twice if you want both, once per bag, with each bag's own allowance. UNITS DO NOT MATTER AS LONG AS THEY MATCH. The fields are labelled in kilograms because most allowances are quoted that way, but the arithmetic is unit-agnostic - enter pounds throughout and every figure is in pounds. The one thing that must not happen is mixing them, which is easy when the allowance is quoted in kilograms and the bathroom scale reads pounds. Fifty pounds is 22.7 kg, which is not 23. THIS DOES NOT KNOW ABOUT FEES, and deliberately so. Excess baggage pricing varies by airline, route and whether you pay online or at the airport, and it is often cheaper to buy extra allowance in advance than to be charged at the desk. If you are close to the limit, that comparison is worth five minutes on the airline's own site.

Common questions

Does the suitcase itself count?

Yes, and it is the thing people most often leave out. Checked baggage is weighed as it goes onto the belt with the case included, so a hard-shell case at four or five kilograms has used a fifth of a 23 kg allowance before anything goes in. That is why the tool reports the case's share as its own figure: if you are regularly close to the limit, replacing a heavy case with a light one buys you two or three kilograms on every single trip, which is usually cheaper than paying for excess even once.

Why doesn't it know my airline's allowance?

Because there is no single figure to know. Allowances are set per airline and vary by route, by fare class, by loyalty status and by whether the bag was added at booking or later - and they change without much notice. Even 23 kg, which is common on international economy tickets, is nowhere near universal. Your booking confirmation is the only source that is definitely correct for your flight. One thing worth checking: on a codeshare, the rules that apply are often the operating airline's rather than those of the airline you booked with.

How do I weigh a bag without a luggage scale?

Bathroom scales. Stand on them holding the bag and note the figure, stand on them without it, and take the difference. It is accurate enough to tell you whether you are at 21 kg or 25 kg, which is the decision you are actually making. A proper luggage scale is more comfortable and costs very little if you travel often. The important part is that something goes on a scale before you leave home - the numbers you type into any calculator are estimates, and estimates are exactly what get people caught at the desk.

Why reserve weight for the way home?

Because a bag that is exactly on the limit leaving cannot bring anything back, and that is invisible while you are packing. The reserve field makes the outbound headroom honest: it shows what you have left after setting aside room for whatever you expect to be carrying home. Set it to zero if you are genuinely buying nothing. If it turns out you were pessimistic, you have simply travelled a little lighter, which is not a problem anybody has ever regretted at an airport.

What about hand luggage?

It is usually a separate allowance with its own limit, so run the tool a second time with that bag's own figures. Two things worth knowing: cabin bags often have a SIZE limit that bites before the weight limit does, and it is checked with a sizer at the gate rather than a scale. And on airlines that weigh cabin bags, wearing your heaviest coat and shoes rather than packing them moves real weight out of both allowances at once - it is not sophisticated, but it works and costs nothing.

Can I use pounds instead?

Yes - the arithmetic does not care about units, only that they all match. Enter pounds in every field and every output is in pounds. The genuine risk is mixing them, which is easy when your allowance is quoted in kilograms and your bathroom scale reads pounds, and it produces an answer that looks entirely plausible. For reference, 50 lb is 22.68 kg and 23 kg is 50.7 lb, so the two common allowances are close enough to be confused and different enough to matter at the desk.

Is it cheaper to pay for extra baggage?

Often yes, if you buy it in advance rather than at the airport - many airlines price excess at the desk deliberately high, and adding allowance online beforehand can be a fraction of it. This tool does not attempt to price any of that, because the numbers vary by airline, route and timing and would be out of date almost immediately. If you are within a kilogram or two of the limit, five minutes on the airline's own site comparing the advance price against the desk price is usually worth it.

Take it further with AI

Copy this into ChatGPT or Claude with your own numbers filled in. It hands over the figures this calculator worked out, so the answer is built on real arithmetic instead of a guess.

I used the Luggage Weight Calculator at https://www.bfcbrilliance.com/tools/packing-list-weight-calculator.

What I entered:
- Your allowance for this bag (kg): ___
- The empty case (kg): ___
- Clothing (kg): ___
- Shoes (kg): ___
- Toiletries (kg): ___
- Electronics and chargers (kg): ___
- Everything else (kg): ___
- Reserved for the journey home (kg): ___

What it calculated:
- Room left in the allowance: ___
- Total on the scale: ___
- Allowance used: ___
- Share of the allowance spent on the empty case: ___
- What you are actually packing: ___

Use those figures as given — they are already worked out, so please don't recalculate or estimate your own. Help me turn them into a plan: what to buy or do, in what order, roughly what it should cost, and the mistakes people most often make with this job.

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