Luggage Weight Limits Explained: kg vs lbs by Airline (2026)

Few things are more stressful at the airport than finding out your bag is overweight. Excess baggage fees can be eye-wateringly expensive, and the confusion between kilograms and pounds makes it even harder to pack correctly — especially when different airlines use different units.

This guide explains how luggage weight limits work, what the major airlines allow, and how to quickly convert between kg and lbs so you always know exactly where you stand.

Why Do Airlines Use Different Units?

Airlines based in the United States typically list baggage limits in pounds (lbs), while airlines based in Australia, the UK, Europe, and most of Asia list limits in kilograms (kg). When you're flying internationally or comparing airlines, you'll often encounter both units on the same trip.

Understanding both — and being able to convert between them — helps you pack smart and avoid surprise fees at check-in.

Key Conversions to Know

Before diving into airline specifics, here are the most important weight conversions for luggage:

Common Airline Baggage Allowances

Please note that airline policies change regularly. Always check your specific airline's website before travelling as allowances can vary by fare class, route, and frequent flyer status.

Carry-on luggage is typically limited to 7 kg (15 lbs) on budget carriers and up to 10 kg (22 lbs) on full-service airlines. Most airlines also have size restrictions of around 55 × 40 × 20 cm.

Checked luggage allowances commonly fall into these ranges:

• Budget airlines (Jetstar, Ryanair, EasyJet): No free checked baggage included, paid add-ons typically start at 15 kg or 20 kg

• Standard international economy: Most commonly 20 kg or 23 kg (about 44 or 50 lbs)

• Premium economy and business class: Often 30 kg to 32 kg (66 to 70 lbs)

• US domestic flights: Often listed as 50 lbs (22.7 kg) per bag

The single most important conversion to memorise is that 23 kg = 50.7 lbs because 23 kg is the most common international checked baggage limit.

Tips for Staying Under the Weight Limit

Weigh your bag at home before you leave A simple bathroom scale works well. Weigh yourself first, then weigh yourself holding the bag. The difference is your bag's weight. Make sure your scale is set to the same unit your airline uses.

Know your buffer If your limit is 23 kg and your bag weighs 22.5 kg, you have very little room for anything you pick up during your trip. Aim to pack at least 1-2 kg under the limit.

Wear your heaviest items Shoes, jackets, and jeans are the heaviest clothing items. Wearing them on the plane instead of packing them can save you 2-3 kg easily.

Distribute weight across bags If you're travelling with someone else, you may be able to shift items between bags to keep both under the limit even if one is overweight.

Use a luggage scale A small digital luggage scale costs very little and removes all the guesswork. They show weight in both kg and lbs and are worth having for frequent travellers.

What Happens if Your Bag is Overweight?

Excess baggage fees vary enormously by airline but they are almost always expensive relative to the cost of checking a bag in advance. Fees of $20 to $50 per kilogram over the limit are common on international routes. On some budget airlines the fee can exceed the cost of the original ticket.

If you're close to the limit, it's almost always cheaper to buy extra baggage allowance online before you fly than to pay at the airport.

Frequently Asked Questions

What is 23 kg in lbs? 23 kg equals 50.71 lbs. This is the most common checked baggage limit for international economy flights.

What is 20 kg in lbs? 20 kg equals 44.09 lbs. This is a common limit for budget international carriers and some domestic routes.

What is 7 kg in lbs for carry-on? 7 kg equals 15.43 lbs. This is a common carry-on weight limit for budget airlines.

Can I combine baggage allowances with another passenger? This depends on the airline. Some airlines allow baggage pooling where the total weight across all bags for a booking can be shared. Others require each bag to be individually under the limit. Check your airline's specific policy.

How do I convert kg to lbs for my luggage? Multiply your kg value by 2.20462. For example, 23 kg × 2.20462 = 50.7 lbs. Or use the free kg to lbs converter on Simple Unit Convert for instant results.

Quick Tip

Always double-check your airline's current baggage policy on their official website before you travel as limits and fees change regularly.

And use the free kg to lbs converter on Simple Unit Convert to quickly check your bag weight in both units.