There are a few things to consider when measuring for a roof box. The first is the size of your vehicle. You’ll need to know the length, width, and height of your car in order to determine what size roof box will fit best.
The next thing to consider is the amount of gear you’ll be carrying. A larger box will obviously be able to hold more, but it’s also important to think about how easy it will be to access your gear. If you’re carrying skis, for example, you’ll want a box that opens from the side so you can easily get them in and out.
Finally, you’ll need to consider the weight of the roof box itself. The heavier the box, the more strain it will put on your vehicle’s roof rack system. With all these factors in mind, here are a few tips for measuring for a roof box:
Key Takeaways:
- Measure the length, width, and height of your vehicle. This will give you a good starting point for finding a compatible roof box.
- Think about how much gear you’ll be carrying and whether or not you need easy access to it. Skis, for example, require a different type of roof box than camping gear.
- Consider the weight of the roof box itself when making your decision.
- To measure the size of a roof box, you will need to take into account the length, width, and height of the box.
- The length is measured from the longest point at the front of the box to the longest point at the back of the box.
- The width is measured from one side of the box to the other at its widest point.
- Finally, the height is measured from the bottom of the box to its highest point.
Are Roof Basket Better Than Roof Box?
How Do You Measure a Roof Box?
When you are ready to buy a roof box, the first thing you will need to do is measure your car’s roof. You will need to know the length and width of your car’s roof in order to choose the right size roof box. To measure your car’s roof, start by measuring from the front of the car to the back.
This is the length. Then, measure from one side of the car to the other. This is the width.
Once you have these measurements, you can start shopping for a roof box that will fit your car’s roof perfectly. It is important to make sure that you get a good fit when choosing a roof box. A poorly fitting roof box can damage your car’s paint job and cause wind noise when driving.
It can also be dangerous if it comes loose while you are driving. That is why it is so important to take accurate measurements before buying a roof box.
Can a Roof Box Be Too Big?
A roof box can be too big if it extends beyond the width of your car’s roof. It can also be too long, which will make it difficult to open your trunk or hatch. If you have a smaller car, you might want to consider a smaller roof box.
Does a Roof Box Fit into Any Bars?
No, not all roof boxes will fit into all types of bars. The size and shape of your roof box will determine which type of bar it is compatible with. In general, there are three types of bars: T-track, square bar, and aero/wing bar.
Each type of bar has its own unique mounting system, so you’ll need to make sure that your roof box is compatible with the type of bar you have before purchasing one.
How is Hatch Clearance Measured?
There are a few different ways that hatch clearance can be measured. The most common way is to measure from the top of the door opening to the top of the highest point on the roof. This measurement is typically taken with the door open and the vehicle on level ground.
Another way to measure hatch clearance is from the bottom of the door opening to the top of the highest point on the roof. This measurement is typically taken with the door closed and can be affected by things like suspension height and tire size. The last way to measure hatch clearance is from the ground to the top of the highest point on the roof.
This measurement is taken with the vehicle on level ground and can also be affected by things like suspension height and tire size.
Roof Box Size Guide
When it comes to choosing a roof box for your car, size is everything. Not only do you need to make sure that the box is big enough to fit all of your gear, but you also need to ensure that it won’t be too large and unwieldy for your vehicle. To help you select the perfect-sized roof box for your needs, we’ve put together this handy guide.
To start, measure the length and width of your car’s roof. This will give you a good idea of how much space you have to work with when selecting a roof box. Keep in mind that most boxes are designed to fit onto roofs with a minimum width of 50cm.
Once you know the dimensions of your car’s roof, take a look at our range of roof boxes and find one that best suits your needs in terms of both size and capacity. If you’re unsure which model would be best suited for your car, feel free to contact us and we’ll be happy to offer some advice.
Thule Roof Box Size Guide
If you’re in the market for a roof box, one of the first things you’ll need to figure out is what size to get. After all, you don’t want to end up with a box that’s too small or too big for your needs.
Luckily, Thule has put together a handy roof box size guide to help you make the right decision.
Here’s what you need to know:
The first thing to consider is the length of your vehicle. Thule offers three different sizes of roof boxes – small, medium, and large – so you’ll need to make sure you get one that’s appropriate for your car.
Next, think about how much stuff you’ll actually be carrying in your roof box. If you’re only going to use it occasionally for light items like blankets and pillows, a small or medium-sized box should suffice. But if you plan on using it regularly for heavier items like camping gear or sports equipment, then you’ll need to go with a larger option.
Finally, take into account the shape of your vehicle when choosing a roof box size. For example, if you have a hatchback or SUV with limited space in the trunk, then a smaller square-shaped box might be best. On the other hand, if your car has plenty of room in the trunk and/or has an aerodynamic design (like many sedans), then a longer and narrower rectangular box would work well.
Keep these factors in mind and consult Thule’s roof box size guide before making your purchase; doing so will help ensure that you get exactly the right model for your needs!
Cargo Box Sizes And Prices
Cargo boxes come in all shapes and sizes, but there are a few general categories that most companies use to determine to price. The size of the cargo box is usually based on the length of the car’s roof, with smaller cars requiring smaller boxes and larger cars requiring larger boxes. The price of the cargo box is also determined by its capacity, with larger boxes costing more than smaller ones.
There are a few other factors that can affect the price of a cargo box, such as the type of material it’s made from and whether it comes with any special features. However, in general, size and capacity are the two main determining factors. If you’re shopping for a cargo box, be sure to keep these things in mind so you can get the best deal possible.
And remember, always measure your car’s roof before ordering to make sure you get the right size!
Thule Cargo Box
Thule is a Swedish company that designs and manufactures products for outdoor activities, including a wide variety of cargo boxes. These boxes attach to the roof of a vehicle and are used to store extra gear, making them ideal for road trips, camping trips, or any other time when you need to bring along more stuff than will fit in your car.
There are many different types of Thule cargo boxes, each designed for specific needs.
For example, the Motion XT is their largest and most popular model, with enough space to hold up to 17 cubic feet of gear. If you don’t need quite that much space, the smaller Force XT has room for up to 14 cubic feet. Both models come with built-in handles and wheels for easy transport from your car to your destination.
If you’re looking for something even more lightweight and compact, the SpaceCase is Thule’s smallest cargo box at just 11 cubic feet. It’s perfect for carrying smaller items like suitcases or golf clubs. And if you need maximum security for your belongings, the SecureLock box features lock cylinders that can be locked shut with a key (sold separately).
No matter what type of Thule cargo box you choose, you can be sure it will make packing up for your next adventure a breeze!
Rei Cargo Box
Assuming you would like a blog post discussing the Rei Cargo Box:
The Rei Cargo Box is a great way to add extra storage space to your car. It’s perfect for road trips or camping trips when you need to bring along more gear than will fit in your trunk.
The box is made of durable plastic and has a weather-resistant lid, so it will keep your belongings safe and dry no matter what the conditions are like outside. Plus, it’s easy to install – just strap it down in your trunk or backseat using the included straps, and you’re all set.
If you’re looking for an easy and convenient way to add extra storage space to your car, the Rei Cargo Box is a great option.
It’s durable, weather-resistant, and easy to install, so it will protect your belongings and make packing up for your next adventure a breeze.
Cargo Box for Suv
A cargo box is a great way to add extra storage space to your SUV. There are many different styles and sizes of cargo boxes available, so you can find one that fits your needs perfectly. Cargo boxes are typically made from durable materials like plastic or metal, and they often come with features like lids and locks to keep your belongings safe.
If you’re looking for a cargo box for your SUV, there are a few things to keep in mind. First, decide what size you need. Cargo boxes come in a variety of sizes, from small boxes that fit behind the seats to large ones that take up the entire trunk.
Second, consider what material you want your box to be made from. Plastic boxes are usually lighter and more affordable, while metal boxes tend to be more durable. Finally, think about any special features you might want, such as a lid or lock.
Once you’ve decided on the perfect cargo box for your SUV, it’s time to install it. Most cargo boxes simply bolt onto the roof rack of your vehicle, but some require more installation than others. Be sure to follow the instructions that come with your particular box carefully so that everything is installed properly and safely before heading out on your next road trip!
Narrow Roof Box
A roof box is a great way to increase the storage capacity of your vehicle, but it’s important to choose the right size for your needs. A narrow roof box is ideal for smaller vehicles or if you need to maximize space on your roof. Here are some things to consider when choosing a narrow roof box:
Capacity: How much stuff do you need to store? Make sure to check the capacity of the roof box before purchasing.
Dimensions: Measure the length and width of your vehicle’s roof so you know what size will fit. A narrow roof box will be shorter and narrower than a standard one.
Installation: Some roof boxes require special installation kits or brackets. If you’re not comfortable installing it yourself, make sure to get help from a professional.
Weight: The weight of the empty roof box will add to the overall weight of your car, so keep that in mind when deciding which one to buy.
Best Cargo Box
If you’re in the market for a cargo box, there are a few things you’ll want to keep in mind. First, consider the size of your vehicle. You’ll need to make sure the box you choose is big enough to hold all the gear you want to transport, but not so large that it won’t fit in your car.
Second, think about how you’ll be using the box. If you frequently go on long road trips or camping trips, you’ll want a model with plenty of storage space and easy access. On the other hand, if you just need extra space for occasional errands or short trips, a smaller box will suffice.
Finally, take into account your budget. Cargo boxes can range in price from around $100 to $500 or more, so it’s important to find one that fits your needs without breaking the bank. With these factors in mind, let’s take a look at some of the best cargo boxes on the market today.
One option worth considering is the Thule Motion XT XXL Roof Box. This massive box has a capacity of 21 cubic feet, making it ideal for storing everything from skis and snowboards to camping gear and luggage. It’s also designed for easy loading and unloading, with wide-opening doors that swing open up to 270 degrees.
And thanks to its aerodynamic shape, it won’t add too much wind noise or reduce fuel economy when driving. The only downside is its high price tag; at $949, it’s one of the most expensive cargo boxes on the market.
For something more affordable, check out Yakima’s SkyBox Carbonite 21 Roof Box.
It also has 21 cubic feet of storage space and wide-opening doors for easy access, but its sleek carbon fiber construction makes it considerably lighter than the Thule box (just 46 pounds). That means it’s easier to install and remove from your roof rack—a definite plus if you plan on using it often. It also comes with an integrated lock system to keep your belongings safe while on the road.
Prices start at $649 for this model.
Conclusion
There are a few different ways that you can measure roof box sizes. The first way is to use a tape measure. You will want to measure the length, width, and height of the area where you will be placing the roof box.
Another way to measure roof box sizes is to use a ruler. You will want to measure the length and width of the area where you will be placing the roof box. The last way to measure roof box sizes is to use a measuring wheel.
You will want to roll the measuring wheel over the area where you will be placing the roof box.
Best Seller List of Roof Cargo Boxes:
- 18 cubic foot (510 L) internal cargo capacity
- Made from durable UV-resistant ABS material
- Rear opening for easy access away from traffic
- Tool-free mounting hardware for easy installation and removal
- Includes key and lock to secure contents in the box, and the box to your rack
- Fits SportRack Rack Systems, square bars, round bars and most factory racks (check fit guide)
- Dimensions (LxWxH): 63 x 38 x 19 in / 160 x 96.5 x 48 cm
- Min-Max Crossbars Spacing: 23 5/8 - 29 3/4 in (60 - 75.5 cm)
- Max Weight Capacity: 100 pounds (45 kg)
- Secure & protect your gear in this 18 cubic ft. HDPE plastic hard shell vehicle cargo carrier; high-capacity interior dimensions 57 L x 38 1/2 W x 17 3/4 H inches; aerodynamic design for fuel efficiency
- Weatherproof storage for your luggage with a four corner locking system, front latch, and weather-tight seal for ultimate car rooftop protection and security
- Easy & convenient loading and unloading from either side of the car make for smooth travel and hassle-free storage
- No tools required, easy assembly and installation on Vehicles with Roof Luggage Rails and Crossbars.All mounting hardware and simple instructions are included to get you safely on the road quickly. The base is pre-drilled for 24in crossbar spacing - if your vehicles crossbars are NOT adjustable the plastic base can be re-drilled to match your vehicle (20in to 30in bar spacing)
- Made in USA, limited lifetime guarantee. The JEGS car top carrier’s high-quality construction and performance give you peace of mind
- Comfortably Holds 3 golf bags, up to 5 if stacked depending on size.
- Designed to fit ONLY on cross-rail systems rated at 150 lbs. and greater. (See Vehicles Owners Manual for Weight Carrying Capacity)
- This cargo carrier must be mounted onto a roof rack with horizontal crossbars
- Be sure to allow for clearance of rear hatchback, roof-mounted antennas, and navigation fins
- Load cargo carrier paying careful attention to distribute the weight evenly and not exceed the maximum allowed weight of the box or cross rails
- 【Durable & Weatherproof Hard-Shell Design】 Crafted from high-quality ABS material, this rooftop cargo box resists impacts, UV rays, and extreme temperatures. The 100% waterproof seal keeps luggage dry in rain or snow, while the aerodynamic shape reduces wind noise and improves fuel efficiency on long trips.
- 【Massive 17 Cu-Ft (480L) Storage Capacity】 With dimensions of 61.42"L x 30.71"W x 14.96", this carrier provides extra space for bulky gear like suitcases, camping equipment, or ski gear. Holds up to 165 lbs—ideal for family road trips or outdoor adventures without sacrificing cabin comfort.
- 【Universal Fit for Most Vehicles】 Compatible with cars, SUVs, and vans equipped with roof racks (crossbars required). Tip: Check your roof rack’s weight limit and spacing before installation for a secure fit.
- 【Dual-Side Opening for Easy Access】 The convenient two-way opening lets you load/unload from either side of your vehicle—perfect for tight parking spots. Includes 2 security keys and 2 reinforced straps to lock contents and prevent shifting during transit.
- 【Easy Installation & Hassle-Free Use】 Designed for quick and tool-free setup, this cargo box securely attaches to most roof racks in minutes. The lightweight yet sturdy construction makes it easy to load and unload, while the low-profile design ensures minimal impact on your vehicle’s height clearance.
- 【DURABLE CONSTRUCTION】Crafted from high-quality ABS material, the hard shell rooftop cargo box ensures long-lasting durability. Its waterproof and UV-resistant design protects luggage from various weather conditions, making it ideal for road trips. The aerodynamic shape also reduces fuel consumption and noise for a smoother ride
- 【SPACIOUS 12/14 CUBIC FEET STORAGE】With dimensions of 54.3"L x 31.5"W x 13.4"H/62.2"L x 31.5"W x 13.4"H, the rooftop cargo box offers 12 cubic feet (340L) of extra storage space. With a maximum capacity of 165 lbs, it significantly increases storage capacity for your belongings
- 【UNIVERSAL FIT】Compatible with all vehicles equipped with a roof rack, including cars, vans, and SUVs. Prior to purchase, please verify compatibility by checking the roof rack fitting guidelines
- 【CONVENIENT DUAL-SIDED OPENING】The dual-sided opening system allows easy access from both sides of the cargo box. Includes 2 keys and 2 straps for added security. Ensure one side is locked when opening the other side
- 【RELIABLE WARRANTY】 is committed to delivering high-quality products and meeting customer expectations. Enjoy a one-year warranty for added peace of mind. For any inquiries, our team is available to assist you within 24 hours
- Universal Fit - This roof top storage box is universal fit for mounting to max 13 inches wide cross bar, please check the dimension before purchase.
- Spacious Capacity - Expand your vehicle's cargo capability significantly with 11 cubic feet of spacious storage and a robust 110 lb weight limit. Designed with a 14-inch wide opening for easy loading of large gear, this box provides ample room for luggage and essentials while keeping your passenger area comfortable and uncluttered. It's perfect for families, road trippers, or outdoor adventurers.
- Secure Lock, Stable Travel - The key lock system keeps your valuables safe. You can only remove the key after all lock points are fully secured. The belongings and luckages stay firmly in place inside during your drive, even on bumpy roads – no shifting or falling out. Open it from the passenger side for easy loading and unloading.
- Impact-Resistant Protection - Built with UV-protected, weather-resistant ABS, the cargo box shields contents from rain, sun, snow, and impacts while maintaining structural integrity in all conditions for reliable long-term performance.
- Overall Dimensions - 53" L x 34" W x 15" H | Capacity: 11 Cubic Feet and up to 110 LBS. Package includes [1] 53 inches length storage box, [2] security lock key, and [4] heavy duty tool free installation mounting brackets.
- Spacious 14 Cu Ft Storage: This rooftop cargo carrier delivers a generous 390L (14 cubic feet) of space, making it the ideal car top carrier for family vacations, road trips, and sports adventures. Easily store camping gear, luggage, or ski equipment and free up valuable cabin room.
- Rugged Hard Shell Protection: Made from tough, UV-resistant ABS, this rooftop cargo carrier hard shell guards your belongings against rain, sun, dust, and road debris—providing reliable protection in any weather conditions.
- Secure & Lockable Design: The roof cargo box is equipped with built-in straps and a dependable locking mechanism, plus included keys. Keep your items stable and safely locked inside the cargo box on every journey.
- High Capacity & Hassle-Free Mounting: With a robust 165 lbs weight limit, this cargo box installs quickly and securely onto most vehicle roof racks or crossbars—no tools required. Always check your roof rack compatibility before purchase.
- Aerodynamic & Universal Fit: The streamlined, low-profile roof cargo box design reduces wind noise and drag, while fitting most cars, SUVs, and vans. Enjoy extra rooftop storage without compromising your driving comfort or vehicle performance.
- Durable and Weather-Resistant: Made from high-quality UV-protected ABS material, this hard-shell rooftop cargo box helps protect your belongings from rain, sun, and snow. Its sturdy design keeps luggage safe during travel while offering long-lasting performance.
- Spacious 14 Cubic Feet Storage: With 14 cu ft (390L) of internal space and a maximum capacity of 165 lbs, this cargo box provides extra room for luggage, gear, or sports equipment like skis. The wide opening makes loading and unloading easier.
- Easy Installation and Universal Fit: Tool-free mounting hardware allows quick setup on most roof racks up to 33 inches wide. Compatible with cars, SUVs, and vans—just verify roof rack dimensions before installation.
- Dual-Sided Access and Secure Lock: The dual-sided opening design provides convenient access from either side of the vehicle. Includes secure keys and straps to help keep your cargo stable while driving.
- Aerodynamic and Travel-Friendly: Designed with an aerodynamic shape to reduce wind resistance and minimize noise. This rooftop cargo carrier helps expand your vehicle’s storage without affecting driving comfort.
- Universal Fit - This roof top storage box is universal fit for mounting to max 13 inches wide cross bar, please check the dimension before purchase.
- Spacious Capacity - Expand your vehicle's cargo capability significantly with 12.7 cubic feet of spacious storage and a robust 110 lb weight limit. Designed with a 13.5-inch wide opening for easy loading of large gear, this box provides ample room for luggage and essentials while keeping your passenger area comfortable and uncluttered. It's perfect for families, road trippers, or outdoor adventurers.
- Secure Lock, Stable Travel - The key lock system keeps your valuables safe. You can only remove the key after all lock points are fully secured. The belongings and luckages stay firmly in place inside during your drive, even on bumpy roads – no shifting or falling out. Open it from the passenger side for easy loading and unloading.
- Impact-Resistant Protection - Built with UV-protected, weather-resistant ABS, the cargo box shields contents from rain, sun, snow, and impacts while maintaining structural integrity in all conditions for reliable long-term performance.
- Overall Dimensions - 55" L x 34.5" W x 14" H | Capacity: 12.7 Cubic Feet and up to 110 LBS. Package includes [1] 55 inches length storage box, [2] security lock key, and [4] heavy duty tool free installation mounting brackets.
- Spacious 16 Cu Ft Storage: This hard shell roof cargo carrier offers a generous 16 cubic feet of space, ideal for road trips, vacations, or outdoor gear. Overall dimensions: 58.3"(L) x 35.4"(W) x 13"(H)
- Heavy-Duty ABS + PMMA Build: Made from durable ABS and PMMA materials, this car roof box is UV-resistant, impact-resistant, and weatherproof to protect valuables in harsh outdoor conditions
- Dual-Side Opening & Secure Lock: Features dual-side opening for convenient loading/unloading. Lock system ensures the key can only be removed when securely closed for maximum safety
- Tool-Free Installation: Quick and easy mounting with no tools required. Compatible with most round, square, and aerodynamic crossbars for universal fit on cars and SUVs
- Passenger-Side Accessibility: Designed for safety and convenience, the box opens up to 14.5" wide from the passenger side with strong support arms to hold the lid open during use
- Durable ABS and PMMA Material:Constructed with high-quality ABS and PMMA materials for impact resistance and weather protection, this roof cargo carrier ensures durability and shields your belongings from harsh outdoor elements.
- Spacious 13 Cubic Feet Capacity:Offers 13 cubic feet of storage space and supports up to 130 lbs of weight, making it perfect for long road trips, camping, and transporting bulky items like luggage or sports equipment.
- Double-Sided Opening for Easy Access:The dual-sided opening design allows for convenient loading and unloading from either side of the vehicle. The strong support arm keeps the lid open securely while you access your items.
- Secure Locking Mechanism:Equipped with a reliable locking system, the key can only be removed when all locking points are securely closed, ensuring the safety of your stored items during travel.
- Tool-Free Installation & Universal Fit:Easily installs without tools and is compatible with most roof rack types, including round, square, and aerodynamic bars, providing a hassle-free setup for a variety of vehicles.
- ▶Overall Dimensions: 55.91" L x 29.53" W x 14.96" H ▶Capacity: 13 Cubic Feet volume and holds up to 130 lbs
Last Update : 2026-02-11
