What Size Tonneau Cover Do I Need?

To protect the cargo in your truck bed from rain, snow, dirt, and the gaze of would-be thieves, a tonneau cover offers a fantastic solution. Available in a range of styles including soft roll-up and folding covers, hard folding covers, retractable or roll-up tonneau covers, and one-piece fiberglass bed covers, one of the options is bound to fit your needs.

A tonneau cover is an investment in your truck that costs between $400 and $1,200 on the type of cover you want. But even before cost factors in, the correct size needs to be chosen or it won’t fit properly. And while models have similar-sized truck beds, they aren’t exactly the same. How do you measure the bed for a tonneau cover so you know it fits properly? Here’s what you should know.

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What Size Tonneau Cover Do I Need?

Generally, truck manufacturers advertise their truck beds within a particular segment. For example, short beds are around 5.5 feet in length, standard box length is 6.5 feet, and long boxes are 8 feet long. However, measurements can be slightly different between manufacturers, and even between different generations the length can change.  

You might ask, “What size tonneau cover fits my truck then?” A measuring tape is the best way to do it. To determine the size of tonneau cover you need for your truck, you’ll need to measure the length and width of the bed of your truck. Tonneau covers are available in a range of sizes to fit different sizes of truck beds, so it’s important to get a cover that is the right size for your truck. 

How To Measure Truck Bed For Tonneau Cover

You need to know how to measure truck bed size for tonneau cover installation to go well. To measure the length of your truck bed, measure from the inside of the bed at the front of the truck to the inside of the bed at the back of the truck. To measure the width of your truck bed, measure the inside of the bed from one side to the other. 

Once you have these measurements, you can use them to find a tonneau cover that is the right size for your truck. Many tonneau cover manufacturers will have a size chart available on their website or in their product descriptions to help you find the right size cover for your truck. 

It’s important to get a tonneau cover that fits your truck properly, as a cover that is too small may not fully protect your truck bed and cargo, while a cover that is too large may not fit correctly and may be difficult to use. 

Choose a Tonneau Cover by Model

While there’s no replacement for an accurate measurement with a tape measure, tonneau covers are manufactured in different lengths and widths to fit specific models. When you’re looking for the right fit at AutoZone, shop according to the year, make, and model to see options that are intended to work with your truck.  

There may be variations between the box lengths and widths even within one model, so always use the measurements you’ve taken to compare with the options you’re considering.  

Truck Bed Tonneau Cover Size Chart

If you’re driving a recent model year truck, the following tonneau cover size chart can help you confirm your measurements to ensure the right fitment.  

Model/Advertised length Actual bed length 
Ford F150 (2021) 
5.5 ft 
6.5 ft 
8 ft 
67.1 in (5 ft 7.1 in) 
78.9 in (6 ft 7.9 in) 
97.6 in (8 ft1.6 in) 
Dodge Ram (2022) 
5 ft 7 in 
6 ft 4 in 
67.4 in (5 ft 7.4 in) 
76.3 in (6 ft 4.3 in) 
GMC Sierra (2022) 
69.92 in (5 ft 9.92 in) 
79.44 in (6 ft 7.44 in) 
98.2 in (8 ft 2.2 in) 
Chevy Silverado 1500 (2022) 
69.92 in (5 ft 9.92 in) 
79.44 in (6 ft 7.44 in) 
98.18 in (8 ft 2.18 in) 
Toyota Tundra (2022) 
5.5 ft 
6.5 ft 
8.1 ft 
65.6 in (5 ft 5.6 in) 
77.6 in ( 6 ft 5.6 in) 
96.5 in (8 ft 0.5 in) 
Chevy Colorado (2022) 
61.7 in (5 ft 1.7 in) 
74 in ( 6 ft 2 in) 
Ford Ranger (2021) 
5 ft 
6 ft 
61.7 in (5 ft 1.7 in) 
72.8 in (6 ft 0.8 in) 
Jeep Gladiator (2021) 60.3 in ( 5 ft 0.3 in) 
Toyota Tacoma (2022) 
5 ft 
6 ft 
60.5 in (5 ft 0.5 in) 
73.7 in (6 ft 1.7 in) 
Nissan Frontier (2022) 73.3 in (6ft 1.3 in) 

(sourced from 

If you’re searching for a tonneau cover, AutoZone has the selection to find the right fit and style for your needs. Ask an associate for assistance to choose the best size for your truck or to answer any questions you have. 

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FAQ/People Also Ask

How do I know what size bed my truck has?

While a standard truck bed is around 6.5 feet, the only way to confirm the true size is by measuring its length from the inside of the bulkhead to the inside of the tailgate. Be sure to measure the width as well.

How do you measure a pickup bed for a tonneau cover?

Using a measuring tape, measure the inner length and width at the top of the bed rail.  

How do I know if my tonneau cover will fit?

Purchasing a tonneau cover using your year, make, and model can help narrow down the options, but the only way to be perfectly confident of fitment is by matching the tonneau cover’s measurements with your truck bed’s size.

Is my truck a short or long bed?

The bed length varies by manufacturer. Typically, a long bed is 8 feet long while a short bed is around 5.5 feet long. A standard truck box is 6.5 feet long.

How do I choose a tonneau cover?

Select a tonneau cover that the manufacturer has categorized for your vehicle. When you shop by year, make, and model, you’ll see options for your particular model. Be sure to match the tonneau cover’s length and width with the dimensions you’ve measured.

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