Overweight Baggage Fee Calculator

1. 01Choose kg or lbPick the unit your airline uses. The allowance and the bag weight should be in the same unit.
2. 02Enter the allowance and bag weightType your included allowance per bag and the actual weight of your bag. The tool shows how far over or under you are.
3. 03Add your airline’s feeChoose per-unit or a flat tier, then enter the fee from your airline’s published rates. There are no built-in fee tables.
4. 04Add extra bagsIf you are checking more bags than your ticket includes, enter the flat extra-bag fee and how many extra bags.
5. 05Read and copy the estimateSee the overweight fee, the extra-bag fee, and the total. Copy it to compare against repacking or paying online.

• A heavy suitcaseWeigh your bag at home and see whether a few kilos over is cheaper to pay for or worth repacking to avoid.
• Bringing back more than you left withHoliday shopping adds weight. Estimate the return fee before you reach the counter and get surprised.
• Deciding on an extra bagCompare the flat extra-bag fee against spreading weight across bags you already have.
• A family or groupSet the number of bags at the same weight to estimate the combined overweight charge for the whole party.

• 27 kg bag, 23 kg allowance, per kgThe bag is 4 kg over. At 12 per kilo that is 48 for the overweight charge, before any extra-bag fee.
• A flat overweight tierA 30 kg bag over a 23 kg allowance in flat mode charges the whole tier fee once, for example 75, regardless of the exact excess.
• One over-limit bag plus an extra4 kg over at 12 per kilo is 48, and a 40 extra-bag fee for one more bag brings the total to 88.

• Weigh before you leaveA luggage scale or bathroom scale at home avoids surprises. It is almost always cheaper to move weight between bags than to pay a per-kilo fee.
• Prepay online where possibleExtra bags and excess weight are often cheaper booked in advance than at the airport, though the exact fee is set by your airline.
• Match the unitEnter the allowance and the bag weight in the same unit. Mixing kilograms and pounds will throw the estimate off.
• Confirm the current feeFees change and vary by route and cabin. Use the figure from your own booking and confirm before you fly.

The overweight amount for a single bag is the bag weight minus the allowance, and it is never negative. In per-unit mode the overweight amount is multiplied by the fee per kilogram or pound. In flat mode a single tier fee applies whenever the bag is over, regardless of how far. The per-bag fee is multiplied by the number of bags at that weight, and any flat extra-bag fee is multiplied by the number of extra bags. The total is the overweight fee plus the extra-bag fee.

Inputs are the weight unit, the allowance, the bag weight, the fee mode and fee, an extra-bag fee, the number of bags, and the number of extra bags. Outputs are the overweight amount per bag, the overweight fee, the extra-bag fee, the total, and whether you are over or under the allowance. The tool assumes the same allowance and weight for each bag counted and that the fee you enter is correct for your ticket.

Airline baggage fees change often and depend on route, cabin, membership tier, and whether you pay online or at the airport. Bundling a table would be out of date almost immediately and could name specific airlines, which this tool avoids. Instead you enter the published fee from your own booking, so the estimate reflects your exact ticket rather than a generic average.

The tool is not connected to any airline and does not know your real fee, so its accuracy depends entirely on the number you enter. A common mistake is mixing kilograms and pounds, or using a flat tier fee in per-unit mode. It also does not model volumetric or dimension-based charges, only weight and flat extra-bag fees.

Everything runs in your browser. The weights, fees, and results are not uploaded, not saved to storage, and not sent to analytics beyond a general usage signal. Refreshing the page clears everything.

Does it know my airline’s fees?

No. There are no built-in airline fee tables. You enter the published fee from your own booking, so the estimate matches your ticket.

What is the difference between per-unit and flat mode?

Per-unit charges for each kilogram or pound over the limit. Flat charges a single tier fee whenever the bag is over, regardless of how far.

Can I estimate more than one bag?

Yes. Set the number of bags at that weight for the overweight charge, and add a flat extra-bag fee with a count for additional bags.

Does it work in pounds?

Yes. Choose kg or lb, and enter the allowance and bag weight in the same unit you selected.

Is the estimate exact?

It is only as accurate as the fee you enter. Fees vary by route, cabin, and whether you pay online, so confirm with your airline before you fly.

Is my data saved?

No. Nothing is stored or uploaded, and refreshing the page clears your inputs.