RV Mattress Sizes and Dimensions Guide

Choosing the right RV mattress size is more than just a matter of comfort—it’s about ensuring you get the most out of your space and sleep well wherever your travels take you.  It is also more complicated than a regular mattress for your home.

Hi, I’m Ryan Poppie, Chief bedmaker at The Beloit Mattress Company. As an expert in the mattress industry since 1990, I know firsthand how important it is to have the right mattress size in your RV or camper.

In this guide, I’ll explain everything you need to know about RV mattress sizes and dimensions, how to find your perfect fit, and give you professional insights to help you make the right choices.

The dimensions of RV or camper mattresses can differ slightly from what you’re used to at home. Over the years, I’ve helped countless RV owners find the right fit for their unique spaces. Custom RV mattresses are designed to fit into compact and sometimes oddly shaped spaces, so it’s important to know exactly what you’re dealing with before purchasing.

Here’s an RV mattress size and dimensions chart that covers the most common RV mattress sizes and camper sizes and their dimensions in both inches and centimeters. This should give you a solid foundation for finding the perfect fit.

When outfitting an RV, selecting the right mattress size can dramatically influence both comfort and space efficiency. Unlike standard home mattresses, RV mattresses come in a variety of dimensions tailored to fit the unique space constraints of RVs. Here’s a closer look at some specific RV mattress sizes and how they compare to regular mattress dimensions.

Before buying a new mattress for your RV, you first need to measure the space where it will go. This isn’t something you want to guess at—getting it right means avoiding the hassle of returns or adjustments later on.

Pro Tip: Measure the Base, Not the Old Mattress.

1. Remove the existing mattress and any bedding from the RV sleeping area.
2. Use a tape measure to determine the length and width of the platform or bed frame where the mattress will sit. This ensures that any compression or shrinkage of the old mattress does not affect your measurements.
3. Get the height of the mattress before removing it.

Here’s how I recommend you measure your RV mattress space:

1. Clear the Area: Start by removing any bedding or items that might get in the way.
2. Measure the Length: Using a tape measure, start from the head of the bed frame and measure to the foot. Make sure to write down the length in both inches and centimeters.
3. Measure the Width: Measure across the bed frame from one side to the other. Be sure to measure at the widest point since some RV beds have unique shapes.
4. Check the Height: Measure from the base to the top of the mattress, including any mattress topper or pad if applicable. Don’t forget to measure the height of the sleeping space if you’ve got overhead cabinets or other height restrictions, you want a few feet of headroom at the minimum.
5. Consider the Corners: If your bed has rounded or angled corners, take note of these. Custom rv mattresses can be made to fit these unique shapes, and trust me, it’s worth getting it right.
6. Account for Obstructions: Note any protrusions or obstacles that may affect the size and shape of the new mattress, such as bedside tables, windows, or cabinet doors that open over the bed

Some unusual custom RV mattress sizes that do not have standard names include:

• 49″ x 79″ – This custom size is used in the Winnebago Revel model.
• 76″ x 76″ – Found in the Airstream Basecamp 16 model.
• 82″ x 78″ – Used in the Airstream Basecamp 20 model.
• 73″ x 73″ – This square mattress size is found in the Murphy bed of the Airstream Atlas model.
• 66″ x 73″ – Used in the Airstream Interstate 19 model.
• 42″ x 76″ – This size is sometimes used for convertible dinettes in RVs like certain Airstream Classic models

Customization is a significant aspect of RV mattresses, allowing for specific dimensions that match the unique shapes and sizes of various RV sleeping areas.

For example, manufacturers can create mattresses with rounded corners or specialized shapes to fit snugly in slide-outs or corner nooks, enhancing comfort and space efficiency.

Custom options improve sleep quality and address individual user preferences, offering various firmness levels to accommodate different sleeping positions.

So many of today’s lightweight, compact RVs have restrictions on the thickness of the mattress, and in some cases, the mattress needs to have 1 or 2 hinges to fold up when traveling.  We are seeing a lot of folks purchasing these units and then looking for a mattress that feels like the non-hinged 14-inch thick mattress they have at home.

There is just no way to make a 5 inch mattress feel like a 14 inch thick mattress.

We are often asked for a 5-inch thick mattress that is soft. A mattress that thin has to be at least moderately firm to prevent you from sinking all the way through and bottoming out. The moral of the story is make sure you understand that these units with thin hinged mattresses are easier to drive, and more fuel efficient however you will have to sacrifice some sleeping comfort.

The other common mistake folks make when choosing an RV mattress is using one with memory foam.  

In 1991 TEMPUR® (Tempur-Pedic) launched the first memory foam mattresses. Their name is derived from the word temperature. This is because memory foam is temperature-sensitive.   So the warmer it gets, the softer it gets, and vice versa; the cooler it gets, the harder it gets.

This is an issue in RVs because the bedroom is not a consistent temperature like a home.  When most memory foam is exposed to temperatures under 60 degrees, it gets really hard. By the time you get close to freezing, you can drive a car on it and not dent it.

So if you were heading up to northern Wisconsin camping on a Friday night in the fall and you arrive about 8 and set up it can take 5 to 6 hours to get enough heat in the mattress to get it comfortable to sleep on.

The tables below provide a clear overview of the typical mattress sizes used in these popular RV models, across A, B, and C classes, helping you choose the right fit for your needs.

Here are the top frequently asked questions on this subject.  If you need more help, please chat with us during our business hours or call our factory to speak with a bedmaker as we’d love to help get you the perfect mattress for your RV and budget.

Choosing the right RV mattress size and material is key to a comfortable and enjoyable experience on the road. From standard sizes to custom solutions, making sure you have the right fit for your RV is essential for a good night’s sleep. I hope this guide has provided you with all the information you need to make an informed decision. If you’re ready to upgrade your RV mattress or need some expert advice, feel free to explore our custom RV mattresses or contact me directly. I’m here to help you find the perfect mattress for your RV.