What Is The Size Of An RV King Mattress? Dimensions, Fit, and FAQs
If you’re searching for “What Is The Size Of An RV King Mattress”, you’re likely trying to figure out whether a king mattress will fit in your camper, fifth wheel, or motorhome—and if it’s the same as a standard king at home. This guide walks through RV king dimensions, how they differ from regular king beds, and what to check before you buy.
What Is the Standard Size of an RV King Mattress?
In RVs, a standard RV king mattress is commonly around 72 inches wide by 80 inches long.
However, RV king sizes are not fully standardized the way home mattresses are. You may see variations such as:
- 70" x 80"
- 72" x 80" (very common)
- 72" x 75" (short RV king)
So when you ask “What Is The Size Of An RV King Mattress”, the most typical answer is:
Because of this variation, it’s important to measure your specific RV bed platform rather than rely on the label alone.
How Is an RV King Different From a Regular King?
At home, standard king and California king mattress sizes are more consistent:
| Type | Typical Size (W x L) | Commonly Used In |
|---|---|---|
| Standard King | 76" x 80" | Homes/bedrooms |
| California King | 72" x 84" | Homes/bedrooms |
| RV King (common) | 72" x 80" | RVs/campers/motorhomes |
Key differences:
- Width: An RV king is often narrower than a standard king (72" vs 76"), helping it fit between walls or cabinets.
- Length: Length might match a regular king (80") or be shortened (75" or less) to clear doors or walkways.
- Fit and shape: Some RV king mattresses have rounded corners or are cut to fit slide-outs or angled walls.
Because of those differences, standard king sheets and accessories may not fit an RV king mattress properly.
Why Do RV King Mattress Sizes Vary?
RVs are designed to make the most of limited interior space, so mattress platforms are often customized to:
- Clear cabinet doors, wardrobes, or bathroom entries
- Fit into slide-outs or tight alcoves
- Allow enough walking space around the bed
This is why two RVs labeled as having a “king bed” can have mattresses with slightly different dimensions. The term “king” in RVs usually means “larger than a queen,” not always the exact same size as a residential king.
How Do I Measure My RV King Mattress Space?
To know the true answer for your specific rig, it’s best to measure the bed platform or existing mattress:
- Remove bedding so you can see the actual mattress or platform.
- Use a tape measure to check the width from side to side.
- Measure the length from head to foot, including any rounded or cut corners.
- Note any obstructions (walls, cabinets, curved edges) that limit usable space.
Write the dimensions down as width x length (for example, 72" x 80"). That’s the size you should look for when shopping.
Common Questions About RV King Mattress Sizes
Is an RV King the Same as a Regular King?
Usually, no. Most RV kings are:
- Slightly narrower
- Sometimes shorter
- Occasionally shaped differently (e.g., rounded corners)
If you try to put a standard king (76" x 80") in a space built for an RV king, it may:
- Hang over the platform
- Block drawers or doors
- Make it difficult to walk around the bed
What Is a “Short” RV King Mattress?
A short RV king is a mattress that’s shorter in length than the typical 80 inches—often around 72" x 75" or similar. This design helps:
- Keep beds away from doorways
- Create more floor space in smaller RV bedrooms
When you see “short king” or “RV short king,” always double-check the exact dimensions.
Will My Regular King Sheets Fit an RV King?
They might not fit well. Because many RV kings are narrower or shorter:
- Standard king sheets may feel baggy or loose.
- Fitted sheets may not grip properly if the mattress is shorter.
Some RV owners use sheet straps, size down, or look for bedding labeled specifically with RV dimensions (for example, “72 x 80 king”).
What Should I Consider Before Choosing an RV King Size?
When you’re figuring out What Is The Size Of An RV King Mattress that will work in your space, consider:
- Exact platform dimensions: Measure the base, not just the old mattress.
- Walkway clearance: Make sure you can still move comfortably around the bed.
- Slide-out movement: If your bed is on a slide-out, confirm the mattress won’t interfere when the slide moves.
- Bedding and accessories: Plan for fitted sheets, toppers, and protectors that match your exact size.
- Mattress thickness: Thicker mattresses may sit higher and affect overhead cabinets or windows.
✅ Quick Mattress Takeaways
Key points to remember about “What Is The Size Of An RV King Mattress”:
- Most common RV king size: About 72" x 80", but there is no single universal standard.
- RV king vs regular king: RV kings are usually narrower and sometimes shorter than a home king (76" x 80").
- Short RV king: Often around 72" x 75", used to save space in tighter RV layouts.
- Always measure: Check your bed platform width and length before buying an RV king mattress.
- Check the shape: Look for rounded corners, cut corners, or slide-outs that can affect fit.
- Bedding fit: Regular king sheets may not fit snugly on an RV king; dimensions matter for sheets and protectors.
Understanding the true dimensions behind the label “RV king” helps you choose a mattress that fits your RV, supports your comfort, and works with your bedding without surprises.
