RV Mattress Dimensions: Every Standard Size, Explained
Published
The tag on an RV mattress says "queen." So does the tag on the queen mattress at a furniture store. They are not the same size — an RV queen can run narrower or shorter than its residential namesake, and that gap is why this page exists.
RV manufacturers reuse residential size names — short queen, queen, king, bunk — without using residential dimensions. No standards body sets what any of those names measure, and RV-specific mattress sellers do not always agree with each other either. This guide lays out the published dimension range for each size class, explains why the names differ, and covers what to measure on your own bed before you order a replacement.
This page covers dimensions only, not specific mattress recommendations or comfort claims — see Related Guides below for product picks.
Disclosure: As an Amazon Associate we earn from qualifying purchases. This guide links to other RV Field Manual pages that recommend products through Amazon affiliate links, at no extra cost to you. This page itself recommends no specific product.
Quick Answer: RV Mattress Size Classes at a Glance
Here is the width and length published for each RV mattress size class, where each one typically shows up, and where sources disagree on what a name means.
RV mattress size classes at a glance
RV mattress size names — short queen, queen, king, bunk — sound like residential mattress names, but no standards body sets what they measure, and RV mattress sellers do not all agree with each other. This table compiles the width and length each size class is given by RV-specific mattress manufacturers and retailers, states where each size typically appears, and names it plainly where two sources use the same size name for two different measurements. A blank or "not standardized" entry means the market has not converged on a figure for that class — most often true for cab-over and corner-cut beds, which are shapes, not just two numbers.
| Size class | Width (as published) | Length (as published) | Where it's typically used | Source | Source checked |
|---|---|---|---|---|---|
| Short Queen | 60 in | 75 in | The most common queen-size bed in travel trailers and fifth wheels — shortened from a residential queen to clear wheel wells, slide mechanisms, or aisle space. | Lippert Components, "Your Comprehensive Guide to RV Mattress Sizes" (RV equipment manufacturer) | 2026-10-04 |
| Queen (RV) | 60 in | 80 in | Full-length queen used where the bedroom has enough length to skip the short-queen cut — larger travel trailers, fifth wheels, and Class A bedrooms. Same footprint as a residential queen. | Lippert Components, "Your Comprehensive Guide to RV Mattress Sizes" (RV equipment manufacturer) | 2026-10-04 |
| King (RV) | 72 in | 80 in | Larger fifth wheels and Class A motorhomes with wider bedroom layouts. | The Big Rig Mattress, RV King 72in x 80in product listing (RV mattress manufacturer) | 2026-10-04 |
| Bunk | 28–35 in (common widths cited: 28, 30, 32, 34, 35 in) | 74–80 in (common lengths cited: 74, 75, 79, 80 in) | Bunkhouse travel trailers and toy haulers. No single bunk size dominates — width and length are tied to the specific bunk frame built into that floorplan. | Lippert Components, "Your Comprehensive Guide to RV Mattress Sizes" (RV equipment manufacturer) | 2026-10-04 |
| Cab-over / Custom | Not standardized — no published range | Not standardized — no published range | Cab-over sleeping areas, corner-cut and notched platforms, and any bed shape that isn't a plain rectangle. These go straight to measuring; there is no size-class table to check against. | Camp Addict, "A Cut Corner RV Mattress CAN Easily Be Replaced!" (consumer RV publication) | 2026-10-04 |
How these numbers were produced: Each width and length is the figure stated by the cited source for that size class, not derived or calculated. Where a size class had no single published figure across the sources checked (Bunk, Cab-over/Custom), the range or absence is reported as found rather than resolved into one number. Where two sources used the same size-class name for different dimensions (King), both figures are reported and the conflict is named in the caveats rather than silently resolved by picking one as correct.
- A width or length marked "not standardized" means no source publishes a single figure for that class — not that none was looked for. No number on this table is estimated, averaged, or carried over from a similar size class.
- The name "King" does not point to one measurement across the market. Three independently checked RV mattress sellers (The Big Rig Mattress, Adventure RV Mattress, and Beloit Mattress Company) all describe a 72 in by 80 in mattress as "RV King." A separate RV equipment manufacturer's published guide instead reserves "RV King" for a 76 in by 80 in mattress — the same footprint as a residential king — and calls the 72 in by 80 in version a "Narrow King." This table reports the 72 in by 80 in figure because it is the usage the majority of checked RV-specific mattress sellers use, but the naming conflict itself is a reason to measure before ordering by name alone.
- "Bunk" is reported as a range, not a single figure, because the sources checked list half a dozen different bunk measurements without identifying any one of them as standard. A bunk's actual size is set by the frame built into that specific floorplan, not by a shared bunk standard.
- Cab-over, corner-cut, and notched beds have no published size range because the shape itself varies by floorplan — a width-and-length pair can't describe a shape with an angle or notch cut into it. Several manufacturers build custom mattresses to a reader-supplied sketch and measurements for exactly this reason.
- Every figure above is a published range, not a measurement of any individual reader's bed. RV mattress sizes vary by manufacturer and model year even within the same named class; measure the existing mattress or the sleeping platform directly before ordering a replacement.
Download the data (CSV) · last updated 2026-10-04 · version 1.0 · CC BY 4.0, attribution to RV Field Manual.
A note on "King": Three independently checked RV mattress sellers — The Big Rig Mattress, Adventure RV Mattress, and Beloit Mattress Company — all list a 72 in by 80 in mattress as "RV King." A separate RV equipment manufacturer's own sizing guide instead reserves "RV King" for a 76 in by 80 in mattress — the same footprint as a residential king — and calls the 72 in by 80 in version a "Narrow King." This table uses the 72 in by 80 in figure because it's what most RV-specific sellers checked for this page use, but the naming conflict itself is a reason to measure before ordering by name alone.
These are ranges, not guarantees — see "Before You Order" below before you buy anything.
Why RV Mattress Sizes Don't Match Residential Sizes
Same name, different number
A residential queen mattress is a fixed, widely agreed-upon size: 60 inches by 80 inches, full stop. An RV queen is not guaranteed to match that footprint — RV manufacturers build bedrooms around wheel wells, slide-out mechanisms, aisle width, and cabinetry, so whatever size fits a given floorplan gets labeled with the closest residential name, even when the real dimensions fall short of it. This happens across the whole RV mattress market, not just one brand, which is why a size name alone cannot tell you what you are ordering.
Short queen explained
Short queen exists because a residential queen's length does not fit many travel trailer and fifth-wheel bedrooms once a slide-out wall, a closet, or a walking aisle takes up floor space — manufacturers trimmed the length but kept the "queen" name because the width still reads as one. If your RV mattress tag says "queen" but the bed looks noticeably shorter than a queen at a furniture store, short queen is almost certainly what you have — see the table above for the published figures.
The Standard RV Mattress Size Classes
Short Queen
Short queen shows up most often in travel trailers and fifth wheels, where bedroom length is the tightest constraint in the floorplan. Lippert Components lists this size at 60 by 75 inches — close to a residential queen's width, trimmed on length. If you are shopping for a replacement, our short queen RV mattress roundup covers options sized for this exact class.
Queen (RV)
Full-length RV queen shows up where the bedroom has the extra room to spare — larger travel trailers, fifth wheels, and Class A bedrooms without a tight slide-out cut. Lippert Components lists this size at 60 by 80 inches, which makes it the one RV size class that matches its residential counterpart in both width and length. See our queen RV mattress roundup for picks sized to this class.
King (RV)
RV king shows up in larger fifth wheels and Class A motorhomes with wider bedroom layouts — but "king" is the one size name in this category where sources genuinely disagree on the number, as the note under the table above explains. The Big Rig Mattress lists its RV King at 72 by 80 inches, the figure this page uses; measure before you order if your tag just says "king," since a different seller's "RV King" can mean a different mattress — see our king RV mattress roundup for options sized across this range.
Bunk
Bunk is the size class with the least standardization of all. Lippert Components cites common bunk measurements spanning roughly 28 to 35 inches wide and 74 to 80 inches long, with no single figure dominating — bunkhouse trailers and toy haulers build bunks to the frame in that specific floorplan. There is no substitute for measuring the actual bunk frame on your rig; our RV bunk mattress roundup is sized around the common range, but "common" is not "universal" for this class.
Cab-over / Custom / Corner-cut
Cab-over, corner-cut, and notched beds do not have a published size range at all, because the shape itself is not a rectangle. As Camp Addict puts it, RV beds "come in unlimited shapes and thicknesses," and a width and a length cannot describe a bed with an angled corner cut into it. If your mattress is one of these shapes, skip the chart and go straight to the measuring section below — several manufacturers build these to a customer-supplied sketch rather than any stock size.
Before You Order: How to Measure Your Own RV Mattress
Once you have narrowed down your likely size class in the table above, these are the measurements that actually determine what to order:
- Measure the existing mattress itself, not the cutout alone — a worn mattress may have compressed from its original size.
- Measure length and width at multiple points — corner-cut and taper shapes are not rectangular.
- Check thickness and height against under-slide or cabinet clearance before buying anything thicker than the original.
- Note any taper, notch, or corner cut and sketch it — a custom mattress shop needs the shape, not just two numbers.
- Re-measure after any slide-out or platform modification — the cutout can change even if the RV model did not.
Common Mistakes
Mistake 1: Ordering by size name alone
What it looks like: Buying a residential "queen" mattress sized for a house because the old RV mattress tag also said "queen."
Why it's a problem: RV queen and residential queen are routinely not the same footprint (except the full-length RV queen class above), and the mismatch only shows up once the new mattress is already in the RV.
What to do instead: Measure the existing mattress or the cutout directly, and use the size-class table above only to narrow down which class to expect — not as the final answer.
Mistake 2: Ignoring corner cuts and tapers
What it looks like: Ordering a plain rectangular mattress for a cab-over or corner-cut bed.
Why it's a problem: The mattress will not sit flush against the platform, and the gap becomes a comfort and support issue rather than a cosmetic one.
What to do instead: Sketch and measure every angle of the shape, or go custom — see "Cab-over / Custom / Corner-cut" above.
Mistake 3: Skipping clearance checks when buying a thicker mattress or adding a topper
What it looks like: A thicker replacement mattress does not close properly under a slide-out wall or cabinet overhang.
Why it's a problem: This becomes a return-and-refit cost, not just an inconvenience.
What to do instead: Measure vertical clearance before ordering a thicker mattress or topper, not after it arrives.
Tools and Products That Help
If you have already identified your size class, the roundups linked above cover that size in detail.
If you are not sure where to start, our how to choose a replacement RV mattress guide walks through the decision more broadly than dimensions alone. If a specific brand came up in your search, our Brooklyn Bedding RV mattress guide covers that option directly.
Pick by your measured size, not by the name on the old mattress tag.
FAQ
What is a "short queen" RV mattress, and how is it different from a regular queen?
Short queen is an RV-specific size that keeps a queen's width but shortens the length enough to clear a slide-out wall, closet, or walking aisle — see the table above for the published figures. A residential queen is a fixed size; a short queen is not a defective or undersized queen, it is a dimension built specifically for RV floorplans.
Can I just use a regular (residential) queen mattress in my RV?
Only if your RV uses the full-length RV queen class, which matches residential dimensions per the table above — and even then, measure your sleeping platform first. If your RV uses a short queen, bunk, or any corner-cut shape, a residential queen will be the wrong length, width, or shape.
What are the standard dimensions for an RV king mattress?
There is not one agreed answer — see "King (RV)" above. Most RV-specific sellers checked for this page use a 72-by-80-inch footprint and still call it "RV King"; at least one equipment manufacturer's sizing guide instead reserves that name for the full residential king footprint. Check your mattress's published dimensions rather than assuming from the name.
How do I measure my RV mattress for a replacement?
Measure the existing mattress itself (not just the cutout, which can differ if the mattress has compressed), take width and length at more than one point if the bed is not a plain rectangle, check vertical clearance before buying anything thicker than the original, and sketch any notch or corner cut rather than reducing it to two numbers. The full checklist is in "Before You Order" above.
My RV mattress is a non-standard or corner-cut shape — what do I do?
Skip the size-class table — there is no published range for these shapes (see "Cab-over / Custom / Corner-cut" above). Measure directly: width at each end, length along the straight edge, and the depth and angle of any notch or cut corner.
Do RV mattress sizes vary by manufacturer or RV type?
Yes. Even within one named size class, the exact footprint can differ by manufacturer and model year — the King entry above is the clearest example of sources disagreeing. Treat every figure here as a published range that narrows your search, not the guaranteed dimensions of your bed.
Related Guides
- Best short queen RV mattresses
- Best queen RV mattresses
- Best king RV mattresses
- Best RV bunk mattresses
- How to choose a replacement RV mattress
- Brooklyn Bedding RV mattress buying guide