RV mattress sizes: dimensions, chart + buying guide

What are RV mattress sizes? 

RV mattresses, also called camper mattresses, run shorter and narrower than standard bedroom sizes. An RV king measures 72 × 80 inches, 4 inches narrower than a standard king (76 × 80). Most RV queen mattresses measure 60 × 75, five inches shorter than a standard queen. Measure your platform before you order.

Sleep doesn't have to suffer on the road. The right RV mattress or camper mattress gives you the comfort and support you need wherever you park. RV mattress sizes differ from traditional sizes, and naming isn't always consistent between manufacturers.

This guide covers every common RV and camper mattress size: dimensions, how they compare to standard sizes, and what to look for before you buy.

Though Purple mattresses aren't available in specialty RV sizes, they offer pressure relief, temperature management, and adaptive support in standard sizes that fit many RVs and campers.

Comfort, Cooling, and Support

Inside every Purple Mattress is the GelFlex Grid®, proprietary sleep technology designed to maximize your comfort.

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Disclaimer: Purple mattresses feature Purple’s proprietary GelFlex Grid®, which offers unique pressure relief and support. Exposure to prolonged high-temperature environments or direct sunlight, which is common in RVs and campers, can affect GelFlex Grid® support over time. Follow manufacturer guidance for RV use.

While many RVs and campers can accommodate standard size mattresses or be modified to do so, this guide covers the sizes that can comfortably fit into RVs.

RV mattress sizes chart

RV mattresses may share names with standard sizes but they often differ in dimensions. Here’s a quick guide:

RV mattress sizes

Here’s how each RV and camper mattress size stacks up.

RV twin mattress

RV twin size mattress dimensions: 28-by-75 inches or 28-by-80 inches

Compared to standard twin size mattresses, RV twins are 10 inches narrower and come in two lengths — the same lengths as a twin or twin XL bed, respectively. These mattresses are very common in RV setups, given their narrow width and ease of fitting into tight spaces. They're also perfect for bunk beds. You can usually find RV twin mattresses in two different sizes to accommodate different sleeper heights. 

Twin mattresses

Twin size mattress dimensions: 38-by-75 inches

Depending on the type of mattress and how thick it is, some standard twin beds can comfortably fit in an RV. Perfect for kids or adults under 5’9”, a standard twin bed may be worth considering for your RV or camper, especially if you don’t want to get a custom mattress made.

RV bunk mattresses

RV bunk size mattress dimensions: 

• 28-by-75 inches
• 30-by-75 inches
• 30-by-80 inches
• 34-by-75 inches
• 35-by-79 inches

If you’re looking for a family-friendly setup with lots of sleep space for the whole family, bunk RV mattresses are an excellent choice. They come in a wide range of mattress sizes and dimensions to fit many sleepers’ ages and sizes.

RV truck mattress

RV truck size mattress dimensions:

• 35 to 42 inches wide
• 79 to 80 inches long

The truck size mattress gets its name because people often place it inside the cab of a semi-truck, but you can also use it in an RV. Truck mattresses measure between 35 and 42 inches wide by 79 or 80 inches long. If you’re a tall sleeper, a truck size mattress is an excellent option.

Three-quarter mattress

Three-quarter size mattress dimensions: 48-by-75 inches

The three-quarter mattress is a little smaller than a standard full size mattress but slightly larger than twin and bunk RV mattresses. This is a good choice if your RV doesn’t have room for a full size mattress. A three-quarter mattress usually measures 48-by-75 inches and can comfortably sleep two children or one adult.

RV full mattress

RV full size mattress dimensions: 53-by-75 inches

While they share a name, RV full or double mattresses are actually an inch narrower than the full size mattress you’re used to sleeping on. This is usually the standard kind of mattress that comes with an RV when you first purchase it.

Full or double mattress

Full size mattress dimensions: 54-by-75 inches

In most cases, a standard full bed won’t fit inside an RV. Full beds may not be a large enough mattress size for couples, but teenagers and single adults under 5’9” often find them roomy.

Full size mattresses from Purple’s Essential Collection are a great fit for campers and RVs, measuring between 8 and 11 inches thick. With flexible Comfort Foam and our proprietary GelFlex Grid®, these mattresses offer simple soothing comfort, temperature-balancing, and pressure relief for a great night’s sleep no matter where you are.

RV queen mattress

Short queen size mattress dimensions: 60-by-75 inches

Also referred to as a short queen mattress, this mattress differs from the queen size mattress you’re used to at home, measuring five inches shorter. With this kind of bed, two adult sleepers can fit fairly comfortably. 

While we don’t carry short queen sizes, Purple’s queen size mattresses offer enough space for two sleepers with cushioning pressure relief and adaptive support. Opt for a mattress from the Essential or Restore® Hybrid lines with mattresses under 13 inches tall for the best fit in your camper or RV.

Sizing note: A standard queen (60 × 80 inches) is 5 inches longer than an RV short queen (60 × 75). Standard queen sheets will hang off the foot of a short queen. Look for sheets specifically labeled for short queen or RV queen sizing. The same applies in reverse: short queen sheets are too short for a standard queen.

Short king mattress

Short king size mattress dimensions: 72-by-75 inches

A short king mattress is four inches narrower and five inches shorter than the king size mattresses designed for bedrooms. RV king mattresses offer enough room for two sleepers without taking up as much space as a standard king.

RV king mattress

RV king size mattress dimensions: 72-by-80 inches

Though four inches narrower than a standard king, RV king mattresses are large enough to comfortably accommodate up to two adults and a co-sleeping child. Because of their generous space, RV kings are a good choice for large campers used by traveling families. 

Some mattress companies use the terms “RV short king size” and “RV king size” interchangeably, so check the company’s official measurements to confirm which size you’re really getting.

If you’re looking for a king size camper bed, Purple king mattresses are a great fit for wider RVs and traveling families who co-sleep with kids. Make sure you choose a flexible mattress that isn’t too thick; options like the Purple Plus® Mattress or the Restore® Hybrid Mattress in a king size are worth considering!

RV king vs standard king: what’s the difference?

The RV king and the standard king share the same length (both run 80 inches), but the RV king is 4 inches narrower at 72 inches wide versus 76 inches for a standard king. That difference matters most for sheet fit and walk-around space in your RV bedroom.

An RV short king trims the length to 75 inches, freeing up floor space in tighter slide-out rooms. For tall sleepers, the RV California king (72 × 84) gives extra legroom without requiring a wider footprint.

Note: RV king sizing isn’t perfectly standardized across manufacturers. Some models measure 70–72 inches wide. Always measure your platform before ordering.

RV California king mattress

RV California king size mattress dimensions: 72-by-84 inches

RV California king mattresses have the same width and length as the standard California king bed size, making them longer than their RV king size counterparts. These RV mattresses tend to be thinner than standard beds in order to fit inside the confined space of an RV or camper. Sleepers over  six feet tall will appreciate the extra legroom that keeps them from feeling cramped.

A California king mattress from Purple offers ample comfort with adaptive pressure relief and full-body support thanks to the GelFlex Grid®. Opt for a mattress from the Essential collection for maximum flexibility in your camper or RV.

Types of RV mattresses

RV mattresses are more compact with fewer layers than standard bedroom mattresses, so your options for comfort, support, and special features may be limited. If you’re shopping for RV mattresses, you can often choose from the following types:

• GelFlex Grid®: Flexible and durable, GelFlex Grid® mattresses are completely unique, offering the perfect blend of temperature-balancing comfort and adaptive support.
• Innerspring: Classic innerspring mattresses may be more affordable, but they can also wear out faster, requiring more frequent maintenance or replacements.
• Memory foam: Foam beds can provide pressure point relief, but they can also trap heat, resulting in overnight discomfort while you travel.
• Hybrid: Hybrid mattresses are fairly uncommon for RVs but can provide a better balance of structured support and comfort at a higher price tag.
• Air: Air mattresses are inexpensive, convenient options, but they tend to be the least durable mattress type.
• Collapsible: Hinged mattresses or cots provide an easy sleeping solution at the cost of comfort.

Looking for the best RV mattress for pressure relief and temperature management? Purple mattresses are built around the GelFlex Grid, a flexible grid that relieves pressure where your body needs it most, helps regulate temperature, and adapts instantly as you move. Mattresses from the Essential collection offer thinner profiles (8–11 inches) that fit more easily into standard RV and camper platforms.

For even greater comfort on the go, consider pairing your mattress with a the Purple Harmony Anywhere™ travel pillow, designed to deliver the same pressure-relieving support wherever you rest.

How to measure your RV bed platform

Grab a tape measure before you shop. Here’s what to check:

• Platform width and length: measure inside the bed frame edges, not the surrounding cabinetry
• Corner radius: some RV platforms have rounded corners that reduce usable mattress area
• Slide-out clearance: with the slide fully retracted, verify the mattress clears the mechanism; most slide-outs need a mattress 6 inches thick or less to close safely
• Weight capacity: heavier mattresses can shift your RV’s cargo balance; check your vehicle’s weight rating before upgrading

When replacing or upgrading the mattress in your RV or camper, it's important to consider several key factors to ensure safety, comfort, and compatibility. RV or camper mattresses often come in non-standard sizes and shapes, so accurate measurements are essential before purchasing a replacement.

Additionally, mattress weight can vary significantly between models and materials; adding a heavier mattress may impact your RV or camper’s weight distribution, cargo capacity, and slide-out mechanisms.

Always check your RV or camper’s weight ratings and manufacturer guidelines before installation of a new mattress. If in doubt, consult a professional to ensure the upgrade does not compromise your vehicle’s structural integrity or performance.

Should You Buy an RV Mattress?

Getting a specialized RV mattress can be a worthwhile investment if you’re limited on space and want to ensure a good fit. In many cases, opting for a custom RV mattress can mean spending more on a mattress with fewer comfort features.

Ultimately, you should always choose the best mattress for your specific needs, preferences, and budget. 

For the perfect balance of cooling, pressure relief, and responsive support, Purple mattresses are a great choice. With thinner options from the Essentials line, flexible GelFlex Grid® mattresses in smaller standard sizes can keep you comfortable on the road.

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