62 linear inches means the sum of your bag's length, width, and depth

Linear inches (also called "inches of dimension") is the total you get when you add the length, width, and depth of your luggage together. A bag that is 28 inches long, 20 inches wide, and 14 inches deep adds up to 62 linear inches: 28 + 20 + 14 = 62. That specific total is the cutoff most airlines use to decide whether a checked bag counts as standard or oversized.

The 62-inch limit exists because it fits the cargo hold of most commercial aircraft. Airlines measure your bag at the widest point in each direction, so a soft-sided suitcase that bulges when packed might measure larger than when empty. If your packed bag exceeds 62 inches, the airline will either charge an oversized baggage fee or refuse to check it.

Key Takeaways

  • Add your bag's length, width, and depth together; if the total is 62 inches or less, it meets the standard checked baggage size for most airlines.
  • A typical full-size rolling suitcase (around 28 inches long, 20 inches wide, 14 inches deep) falls right at or just under the 62-inch limit.
  • Soft-sided luggage can measure larger when packed full, so a bag that fits the limit when empty might exceed it when stuffed.
  • Airlines measure at the widest point, including wheels and handles, so the actual dimensions of the bag itself matter more than the label.

Common luggage sizes and their linear inch totals

Most checked suitcases fall into a few standard sizes. A carry-on bag typically measures around 22 × 14 × 9 inches, which adds up to 45 linear inches—well under the checked baggage limit. A standard checked suitcase (the most common size) runs about 28 × 20 × 14 inches, totaling 62 inches exactly. A large checked suitcase might be 32 × 21 × 14 inches, which equals 67 linear inches and would trigger an oversized fee on most carriers.

The difference between a standard bag and an oversized one can be just a few inches. A suitcase that is 29 inches long instead of 28 inches, with the same width and depth, jumps to 63 linear inches and crosses the threshold. Soft-sided luggage complicates this because the fabric stretches; a bag rated at 28 inches might measure 29 or 30 inches when fully packed.

How to measure your own luggage

Measure your bag when it is empty and closed, using a tape measure or ruler. Start at the bottom corner and measure straight up to the top (height), then across the widest point side to side (width), then from front to back (depth). Measure to the nearest inch. If your bag has wheels, include them in the height measurement. If it has a handle that extends above the bag, measure to the top of the handle when it is fully extended, since airlines measure the overall footprint.

Write down all three numbers and add them. If the total is 62 or under, your bag meets the standard size. If it is 63 or higher, expect to pay an oversized baggage fee—typically $50 to $100 per flight, depending on the airline. Some airlines charge the fee only on the first oversized bag; others charge per bag.

Why airlines use linear inches instead of volume

Linear inches measure how much space your bag takes up in a straight line, not how much it can hold inside. Two bags can have the same linear inch total but different capacities. A long, narrow bag (32 × 18 × 12 inches = 62 inches) holds less than a more cube-shaped bag (24 × 22 × 16 inches = 62 inches), but both count as standard size.

Airlines use linear inches because it is quick to check at the gate and works the same way across all carriers. A gate agent can eyeball a bag or run it through a sizing frame without doing math. The system is not about fairness in packing volume—it is about fitting bags into the cargo hold efficiently, and long, narrow bags stack better than bulky ones.

What happens if your bag exceeds 62 inches

If your checked bag measures more than 62 linear inches, the airline will charge an oversized baggage fee before you board. Some airlines let you pay this fee at the ticket counter when you check in; others charge it at the gate. The fee is per bag and per flight, so a round trip with an oversized bag costs double.

A few airlines have stricter limits. Southwest, for example, charges for bags over 62 inches on some routes. Budget carriers like Spirit and Frontier charge for any checked bag, oversized or not. International carriers vary widely—some allow up to 70 linear inches for a standard checked bag. Always check your specific airline's baggage policy before packing, because the rules change by carrier and sometimes by route.

Soft-sided versus hard-sided luggage and the 62-inch limit

Hard-sided suitcases (plastic or polycarbonate) hold their shape, so a 28 × 20 × 14 inch bag will measure exactly that whether empty or full. Soft-sided luggage (fabric with a frame) can expand when packed, especially if you stuff it beyond its intended capacity. A soft-sided bag rated at 28 inches might measure 29 or 30 inches when packed tight, pushing it over the limit.

If you travel frequently and pack heavy, a hard-sided bag is safer for staying under the 62-inch threshold. If you prefer soft-sided luggage, measure it when it is packed the way you normally pack, not when it is empty. Some travelers keep a luggage scale at home and weigh their bags before the airport to avoid surprises, though weight limits (usually 50 pounds for checked bags) are separate from size limits.

Frequently Asked Questions

Does 62 linear inches include the wheels and handle?

Yes. Airlines measure the overall dimensions of the bag as it sits, so wheels and an extended handle count toward the total. Measure from the bottom of the wheels to the top of the handle when it is fully extended. If your bag has a retractable handle, measure with it extended, since that is how it travels.

Can I pack my bag fuller if it is under 62 inches when empty?

You can pack it fuller, but if it expands beyond 62 inches when full, the airline can charge an oversized fee. Soft-sided bags are especially prone to this. Pack conservatively if your bag is close to the limit, or measure it once it is packed the way you normally pack it.

What if my bag is 63 or 64 linear inches—will the airline always charge me?

Most airlines will charge an oversized fee for anything over 62 inches. Some gate agents may allow a bag that is 1 or 2 inches over if it fits in the sizer frame, but you should not count on it. If your bag is borderline, contact the airline before your trip to ask about their policy.

Is the 62-inch limit the same on all airlines?

Most major U.S. carriers (American, Delta, United, Southwest) use 62 inches for standard checked baggage. International airlines, budget carriers, and regional airlines may have different limits—some allow up to 70 inches, others are stricter. Check your airline's website or call before you pack.

Do carry-on bags have a linear inch limit too?

Yes. Carry-on bags typically have a 45-inch limit (around 22 × 14 × 9 inches), though some airlines allow up to 50 inches. The limit is smaller than checked baggage because the bag has to fit in the overhead bin. Measure your carry-on the same way—length plus width plus depth—and verify the airline's specific limit before you travel.