How to Measure Truck Bed for Tonneau Cover?

Truck bed covers are an excellent way to protect your truck bed contents. These materials can be expensive, so you must choose the right cover.

While some of them are modular, meaning they will fit on both short and long beds, others require you to go back to the store after you have purchased it for a partial refund if your truck bed is too short or too long.

For this reason, before making your purchase, it’s important to know how to measure truck bed for tonneau cover bed first.

“You may have a giant robot, a flaming sword, or a magical tome. But we have a truck. And that makes us better.”

Tonneau covers can provide extra protection to your pickup truck bed. In addition, they also serve as a stylish way to cover your truck’s bed.

However, you may need to measure your truck bed before you can buy a tonneau foldable wrap cover. In this post, we’ll cover how you can measure a truck bed for a tonneau cover.


Handle it the Old-School Way

The measures can be obtained in a variety of ways, but several of them may add complexity and ambiguity. Experts suggest doing things with the old-fashioned approach to avoid this.

Simply pick up a tape measure and get equipped to crunch some numbers. It’s nothing special, so don’t panic. Converting inches to feet (keep dividing by 12) or feet to inches (multiply with 12).

Start by taking Outside Rails Measurements

To get a bass boat cover for your vehicle, you must first measure the length between the outside bed rails.

To determine the proper truck bed tonneau cover length, first, measure from one end of the truck bed to the other via the outside rails.

A tonneau water-resistant cover whose length is shorter than the distance between these outer rails may not remain as secure as a properly sized one.

“I never rely upon Luck to come my way. I chased it down using my truck.”

The size of the tonneau convertible wrap cover is directly dependent on the length of your truck bed.

The problem occurs when you purchase a larger tonneau, but your bed is too short that the mounting holes don’t align with the mounting holes on your truck bed.

When fitting a full-size truck bed cover, make sure you always measure the truck bed to ensure there are no obstructions to mounting the tonneau.

Measure the Interior Dimensions

To achieve maximum versatility on how to measure truck bed for a tonneau cover, measure your truck bed for a new tonneau soft-top covering.

You will need measurements from the inside of the rails of your pickup to the inside of the rails of your pickup. Then, make sure the new tonneau cover comes one inch or half an inch smaller than that measurement.

Determine the length of your truck bed

When you’re measuring for a bed liner to be put into your truck bed, there are different kinds of liners. The two major ones are roll-in bed liners and drop-in bed liners.

Roll-in liners are typically permanent, while drop-in liners can be removed when desired. For the final measurement, take your measuring tape and start going for the inside edge of the tailgate starting from the bulkhead (the backside of the passenger cabin).

This measurement helps you see what you have to work with.

“I needed to get out of here,” she explained. I had to get up and walk. But at the time, I could have effortlessly hoisted that semi-truck full of pudding.”

To determine the amount of bumper wrap you need, you will want to measure your bed. For an over-the-bed cover, simply do not include any rack or other bed accessories.

If you are installing a tailgate-specific cover, subtract the liner thickness to provide the necessary coverage.

RELATED: How Much Is It To Wrap A Car

Some Points to Consider:

Don’t be concerned with exact measurements in inches on how to measure truck bed for tonneau cover

Everyone knows that the wrong measurement can lead to a bed cover that won’t fit properly. The thing that matters most is the length of the truck bed.

In this case, you shouldn’t worry too much about the exact measurements on how to measure a truck bed for a tonneau cover.

A ballpark figure will be good enough. The common lengths of most pickup trucks are within a few inches from each other.

To figure out how large of a tonneau cover you may need, first measure your truck bed from front to back, side to side, and from the top to the bottom.

If any of these measurements are around a few inches of one of the available bed lengths for your truck hardtop cover, you’re fine.

A Quick fix is Available

You might be lazy and you might be busy, but if you’re in the market for a truck and you don’t want to take the time to measure the bed yourself, there’s good news.

You can just enter your truck’s clamshell cover make, model, and year on a website or mobile app to see its specs. If you prefer measuring the bed of your truck with an automated method, search for your truck on

It has the measurement of all 2016 model year trucks, as measured at the factory.

Or when you shop for a pickup truck, you can easily access the factory specs of your chosen model from a third-party website.

This way, you can check the measurements of the truck bed without having to bother sorting out a tape measure.

It is best to measure it yourself because it might be easier to get accurate measurements that way. It also ensures that you’re buying the right padded shell.

The reasons are just simple: Anything outside of the factory specs will cause gaps around your cover, bad waterproofing, and even leaks.


A tonneau cover is a well-thought-out, stylish addition to any truck. This kind of cover will help you transform your truck into an immaculate vehicle.

However, not all tonneau weatherproof covers are created equal. While some may think that the only difference between one tonneau cover and another is aesthetics, they couldn’t be more wrong.

This is the main reason for uncovering the truth that’s behind how to measure truck bed for a tonneau cover.

Tonneau covers are the aesthetic finishing touch that you need to give your truck bed. They are designed to keep your truck’s bed’s contents hidden, which means nothing will be exposed to the elements.

Since your bed is out of sight, it will be out of mind, and you will gain a lasting impression from those who see your vehicle bonnet cover on a day-to-day basis.

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