Airline Baggage Allowances: Converting kg to lb and Avoiding Overweight Fees
October 29, 2026
Airlines publish baggage limits in kilograms or pounds depending on the region, and the mismatch causes costly mistakes at the check-in desk. To convert kilograms to pounds, multiply by 2.2046; to convert pounds to kilograms, divide by 2.2046. A 23 kg checked bag is 50.7 pounds, so a 50-pound limit and a 23 kg limit are almost, but not exactly, the same. A bag of 51 pounds is 23.1 kg, which could be over the limit.
Because scales vary, aim to pack at least 2 pounds (1 kg) under the limit.
Skip the math and get your answer instantly:
Open the Weight Converter →Common Limits Converted
The table shows typical allowances. Carry-on limits vary widely, from no weight limit on some airlines to 7 or 10 kg on others, and the size dimension is just as important as the weight. International routes may be governed by a piece system (a set number of bags) in one region and a weight system in another. Check your specific fare, because basic economy fares often exclude checked bags, and codeshare flights can have different rules for each segment.
| Kilograms | Pounds | Typical use |
|---|---|---|
| 7 kg | 15.4 lb | Strict carry-on limit |
| 10 kg | 22.0 lb | Carry-on limit |
| 20 kg | 44.1 lb | Economy checked, weight system |
| 23 kg | 50.7 lb | Standard checked bag |
| 30 kg | 66.1 lb | Extra-heavy allowance |
| 32 kg | 70.5 lb | Maximum for most airlines |
Packing to the Limit
Weigh your empty suitcase first: a hard-sided 28-inch case can weigh 10 to 12 pounds, while a lightweight soft-sided case may be 6 to 7. With a 50-pound limit and a 10-pound suitcase, you have 40 pounds for contents, about 18 kg. A typical week's clothing is 10 to 15 pounds, shoes 2 to 4 pounds per pair, and toiletries 3 to 5 pounds. Use a hanging luggage scale and pack, weigh, and adjust. Wear your heaviest items, such as boots and coat, on the plane. Spread the weight between bags when traveling with a companion: two bags at 45 pounds are better than one at 60 and one at 30.
Overweight Fee vs. Extra Bag
Fees are typically charged for bags above the limit up to a maximum: for example, an extra $100 for bags from 51 to 70 pounds, and $200 for 71 to 100. Compare this with checking an additional bag, which may be $40 to $100. Splitting a 62-pound bag into two 31-pound bags avoids the overweight charge, but the second bag costs. Shipping items home, buying at the destination, or paying for a higher fare class with a larger allowance may be cheaper. Always compare total cost for the trip, round trip.
Carry-on Strategy
Carry-on weight is enforced less often, but bags that cannot be lifted into the overhead bin may be gated. Put heavy, dense items (books, electronics, chargers) in the carry-on if the checked bag is near the limit and the airline does not weigh carry-ons, and carry batteries and valuables with you in any case. Lithium batteries and power banks must travel in the cabin. Respect liquid limits of 100 ml (3.4 oz) per container in the security bag.
Frequently Asked Questions
How do I convert kg to lb?
Multiply by 2.2046.
Is a 23 kg limit the same as 50 lb?
Almost; 23 kg is 50.7 lb.
How far under the limit should I pack?
About 1 kg or 2 lb under, to allow for scale differences.
Is it cheaper to pay an overweight fee or add a bag?
Compare both; it depends on the airline and weight.
Where do lithium batteries go?
In the cabin, not checked luggage.