Your baggage will be considered oversized or overweight when it exceeds the permitted dimensions and weight for checked baggage (50 lb in Economy Class, 70 lb in Business Class, and 158 linear cm).

The most accurate way to know if your bag is overweight is to use a digital luggage scale, which is a small handheld device that hooks onto the handle and gives a precise reading. If you don't have one, the "bathroom scale trick" is a reliable home alternative: first, weigh yourself on a standard scale, then weigh yourself while holding the suitcase, and subtract the first number from the second. If you have no scale at all, you can use "benchmark items" for comparison; for example, a standard gallon of water weighs about 8.3 lbs (3.8 kg), so a 50 lb bag should feel roughly as heavy as six gallons of water. Another tip is to look for "smart" luggage that has built-in sensors in the handle. If you're still unsure when you arrive at the airport, look for unattended check-in kiosks or empty counters; most airports have scales at every desk that remain active, allowing you to perform a "test weigh" before joining the official line and potentially facing expensive overage fees.