RV mattress sizes, and where the size names stop being reliable
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Quick answer
The size that matters is the one you measure. The common RV sizes are short queen 60 x 75, RV queen 60 x 80, RV king 72 x 80, RV twin 38 x 75 and RV full 53 x 75 - but bunks and van platforms are built to the space, not to the chart, so they carry a Measure first marker below rather than a number you can order from.
An RV mattress size is a description of a cavity, not a product standard. Residential bed sizes settled decades ago and barely move; coach sizes are set per floorplan, and a builder will shorten a bed by five inches to gain storage or clear a wardrobe door. That is why the two sizes that sound interchangeable - RV queen and RV short queen - are the pair that causes the most returns.
Size chart
| Size | Nominal W x L | Fit class | What that means | Source |
|---|---|---|---|---|
| RV Bunk (narrow) | 28 x 75 in | Measure first | Bunks vary more than any other RV size. 28, 30, 32, 34 and 35 in widths all exist. | Maker spec: FoamRush (checked on the maker's site) |
| RV Bunk (wide) | 34 x 75 in | Measure first | Some fifth-wheel bunks run 35 x 79. Trim-to-fit foam is often the only match. | Maker spec: FoamRush (checked on the maker's site) |
| RV Twin | 38 x 75 in | Drop-in | Same footprint as a residential twin. | Not checked against a maker spec yet: nominal size only |
| Three-quarter | 48 x 75 in | Trim to fit | No residential equivalent. Cut down from a full, or order foam. | Not checked against a maker spec yet: nominal size only |
| RV Full | 53 x 75 in | Measure first | Residential full is 54 x 75. One inch of overhang is enough to jam a slide-out. | Not checked against a maker spec yet: nominal size only |
| RV Short Queen | 60 x 75 in | Drop-in | The most common factory replacement size. Makers ship it at both 74 and 75 inches long, so check the stated number, not the size name. | Maker spec: Celestial Sleep, ViscoSoft, Lounj, Four Seasons Essentials (checked on the maker's site) |
| RV Queen | 60 x 80 in | Drop-in | Identical to a residential queen. Confirm before assuming yours is short. | Maker spec: Novilla, Zinus (checked on the maker's site) |
| RV Short King | 72 x 75 in | Measure first | Rare. Usually needs two twin-size pieces or ordered foam. | Not checked against a maker spec yet: nominal size only |
| RV King | 72 x 80 in | Trim to fit | Four inches narrower than a residential king (76 x 80). A residential king will not close the slide. | Maker spec: Custom Classic (checked on the maker's site) |
| RV California King | 72 x 84 in | Measure first | Matches residential Cal King width and length in most coaches. | Not checked against a maker spec yet: nominal size only |
| Van platform (common build) | 48 x 72 in | Trim to fit | Conversion beds are built to the van, not to a size chart. Foam cut to the platform is the norm. | Not checked against a maker spec yet: nominal size only |
| V-berth (boat) | 60 x 75 in | Custom only | Tapered, not rectangular. Amazon sells the foam, not the shape. Template first, then cut. | No standard size: template your own berth |
Measure the sleeping platform itself - corner to corner, inside any side rails - not the old mattress, which may have compressed or been trimmed by a previous owner. Write down width, length and the height you have under a slide-out or overhead cabinet. Order to the platform.
Shopping for your size
When the tape agrees with a row in the chart, the page for that size is below. Five of the sizes also have a mattress in our catalog whose maker confirms that exact size on its own site.
| Size | Read first | Maker-checked at this size |
|---|---|---|
| RV Short Queen, 60 x 75 | Short queen mattresses, then toppers and sheets for the same size | Celestial Sleep RV Short Queen Memory Foam, 10 in(paid link) |
| RV Queen, 60 x 80 | Camper queen: 60 x 75 or 60 x 80 | Novilla Bliss Memory Foam, 8 in(paid link) |
| RV King, 72 x 80 | RV king mattresses | Custom Classic Custom Classic Gel 10, RV King(paid link) |
| RV Bunk, 28 x 75 | Bunk mattress replacement | FoamRush RV Bunk Replacement, 6 in(paid link) |
| RV Bunk, 34 x 75 | FoamRush RV Bunk Replacement, 7 in(paid link) | |
| Van platform | Camper van mattresses | Foam cut to the platform |
| V-berth | Boat and V-berth replacement | Template first, then cut foam |
| Sofa bed or jackknife | RV sofa bed mattress | Foam cut to the cushion |
| Short king, California king, full, three-quarter, twin | Choosing a replacement RV mattress | Nothing in our catalog is maker-checked at these sizes yet |
The three sizes people get wrong
Short queen vs queen
Same width, five inches of length apart. A residential queen forced into a short-queen platform will hump at the foot or block the bedroom slide. If your tape reads 75 inches, you are shopping short queen and the search term that matters is short queen, not queen.
RV king vs residential king
An RV king is narrower - about 72 inches against 76. Width, not length, is the problem here, and width is what the slide-out mechanism cares about. A California king is closer on width but adds four inches of length.
Bunks
There is no reliable bunk standard. Widths from 28 to 35 inches are all in production, and lengths of 74, 75 and 79 inches all appear. This is the category where trimmed foam beats a stock mattress most often, which is covered under bunk mattress replacement.
Thickness is a separate measurement
Width and length decide whether the mattress fits the platform. Thickness decides whether the bedroom slide closes, whether the overhead cabinet doors clear, and in some fifth wheels whether you can still sit up in bed. Take the vertical measurement before you shop, because a 12-inch residential-profile mattress in a coach designed around a 6-inch one changes the room.
Questions people ask
Is an RV queen the same as a regular queen?
Sometimes. An RV queen is 60 by 80 inches, identical to a residential queen. An RV short queen is 60 by 75 - same width, five inches shorter. Both are called 'the queen' by coach builders, which is why the length has to be measured rather than assumed.
What size is a short queen mattress?
60 inches wide by 75 inches long. It is the most common factory size in travel trailers and fifth wheels, and it is a stock size several bed-in-a-box makers ship, so it is usually a drop-in replacement.
Why are RV bunk sizes so inconsistent?
Bunks are built into whatever space is left after the floorplan is set, so widths of 28, 30, 32, 34 and 35 inches all exist, sometimes in the same model year. Bunk sizes are the one place where a size chart should not be trusted at all.
Can I use a regular king mattress in an RV?
Not in a coach built for an RV king. An RV king is about 72 by 80 inches; a residential king is 76 by 80. Those four inches of width usually sit exactly where the slide-out wall travels.
How do I measure the sleeping platform?
Measure the platform, not the old mattress. Take width and length inside any side rails or bed frame, at the corners as well as the middle, since some platforms taper. Then measure the vertical clearance to an overhead cabinet or the underside of a slide, because that caps mattress thickness.
Sources
- Mattress and topper makers' own size specifications, for the five sizes the chart marks with a maker - checked when each product was added to the catalog. The other sizes are nominal and not yet checked against a maker spec.
Last updated 2026-10-27