How to measure suitcase size?
How to measure suitcase size for airline luggage and travel needs
How to measure suitcase size is one of those questions you usually ask right before a trip when you want to be sure your luggage will be accepted at the airport. How to measure suitcase size also matters when you are choosing between carry-on and checked luggage because airline size limits can be strict. How to measure suitcase size correctly becomes much easier when you start with the exact suitcase you plan to travel with, not a generic example. If you also want quick clarity on cabin dimensions, this page about what size a cabin suitcase is helps you connect measurements to what airlines typically allow.
Step-by-step: measure suitcase size with a measuring tape
To measure suitcase size accurately, place your suitcase upright on a flat floor and use a measuring tape for the three measurements: height, width, and depth. Always include wheels and handles, because airline staff measure the outermost points, not just the shell, and extra inches can make a bag oversized. Start at the top of the case and measure straight down to the floor to get the height, then measure the width at the widest point and measure the depth of your suitcase from front to back. This step-by-step method is also the simplest way to measure luggage size at home, especially if you want to avoid extra fees at check-in.
- Height: Measure from the floor to the top of the case, and include wheels and handles.
- Width: Measure the width at the widest point, and remember to measure the width including any side handles that stick out.
- Depth: measure the depth of your suitcase from the front shell to the back shell, including any bulges when the suitcase is packed.
- Add them up for total linear dimensions, because some airline luggage allowances are based on total linear size.
Luggage size guide for our carry-on and checked luggage
Our carry-on suitcase is a popular suitcase size because it is 55 × 35 × 25 cm, which is accepted by almost every airline as carry-on luggage. For longer trips, our medium-sized suitcase is designed for checked luggage and measures 67 × 43 × 25 cm, giving you more packing capacity while staying lightweight and sturdy thanks to high-quality polycarbonate. We also offer kids' luggage options, including a small kids' suitcase at 31 × 19 × 48 cm in polycarbonate, a carry-on-size kids' suitcase at 55 × 35 × 25 cm in polycarbonate, and a kids' case at 46 × 31 × 19 cm made from transparent PVC and polyester.
What suitcase size counts as carry-on or checked luggage for an airline?
In practice, carry-on means your suitcase fits the airline size restrictions for the cabin, while checked luggage means it goes to check-in and travels in the hold as checked baggage. Our carry-on suitcase is designed to meet the hand luggage restrictions used by almost every airline, so it is a strong choice when you want a cabin bag that fits typical size limits. Different airlines also publish carry-on dimensions in inches, often around 22 × 14 × 9 inches, which is why measuring in centimeters and checking the airline’s website is smart. If you are unsure whether your trip should be carry-on or checked, our medium-sized suitcase cm is a comfortable option for checked luggage and helps you avoid squeezing everything into a smaller bag.
How to measure luggage size to match airline size and weight restrictions
After you measure the suitcase, compare your results with the airline’s website so you know you are within the size and weight restrictions for your route. Many travelers focus only on suitcase size, but airline rules also include a weight limit, and some routes have strict weight checks at the gate or at check-in. A practical habit is to measure luggage size and then do a quick weight check at home, especially if you are aiming for a 23 kg allowance or another kg target. If you are planning around weight, this resource on what size suitcase is needed for 23 kg can help you think through capacity and packing choices without surprises.
Choosing the perfect size for your travel experience
The perfect size depends on how you travel, not just the airline rules, so think about your travel needs and how you like to pack. Our carry-on suitcase has a capacity of 36 liters, which is ideal for packing light on short trips, especially if you use packing cubes and keep your toiletry kit compact. For extended trips, a medium-and-large approach usually means choosing our medium-sized suitcase for checked bags and leaving space for souvenirs while keeping the case light and easy to roll. If you also carry a backpack, duffel, or underseat item, plan your carry-on and checked luggage as a set so you do not exceed baggage limits when you arrive at the airport.
Our suitcases are built for real travel: both the carry-on and the medium suitcase are made from high-quality polycarbonate, have four wheels that rotate 360 degrees, and almost all include a built-in TSA lock for security. If you ever need help with the lock, this guide on how to reset a suitcase lock is useful to keep your luggage ready for every trip. For kids, the design is about comfort and fun: the kids' case has a telescopic adjustable pull handle, an extra carry handle, and two wheels with lights that add visibility and a playful effect while staying lightweight. These details matter because a suitcase that rolls smoothly and stays organized improves the whole travel experience, whether you are moving through an overhead bin line or collecting checked baggage after landing.
Choose the right suitcase size for your next trip
Now that you have found out how to measure a suitcase the right way, it's time to get a proper suitcase yourself. If you want luggage that is easy to measure, easy to recognize, and built for airline travel, choose our carry-on, medium, or kids' suitcase in one of 1200+ unique designs, or personalize it with your own photo, name, or initials so your baggage stands out instantly.
Yes, always include wheels and handles because airlines measure the outside dimensions at the widest points. This is the most reliable way to avoid extra inches that push you over size limits.
Our 55 × 35 × 25 cm carry-on suitcase is accepted by almost every airline as cabin carry-on. Still, it is smart to confirm on the airline’s website because some routes have specific hand luggage restrictions.
Measure your suitcase with a measuring tape and compare the three measurements to the airline’s carry-on limits. If your suitcase is oversized, you may be asked to check it as checked luggage at the gate.
Rules vary by airline and item type, so always check before you fly. This guide explains it clearly: do electrical items go in hand luggage or a suitcase?.