Sofa Bed Dimensions: Open Length, Closed Size and Mattress

How far does a sofa bed reach into the room when it is open?

The bed length on a listing is the least floor an opened sleeper will take from the wall, and on some mechanisms it is very close to the whole footprint. How much more you need depends on how the sofa opens.

On a fold-down back sofa bed, the backrest lowers flat and becomes part of the sleeping surface. IKEA describes EKHOLMA this way, and its bed is published at 63 3/8 by 78 inches, so with the sofa against the wall, the bed reaches roughly 78 inches (198 cm) into the room. Click-clack and futon-style sofas work on the same idea: the seat and the back together make the bed.

A fold-out foam sofa bed unfolds its sections across the floor. Monvane's Oversized Sofa Bed is 38 inches deep as a seat and unfolds to about 75 inches long, which Monvane gives as an approximate figure on its own listing.

On a pull-out, the mattress unfolds forward from under the seat while the sofa's back and frame stay where they are. The floor it takes from the wall is the bed length plus the part of the sofa that sits behind the head of the mattress, so ask the seller for the open depth measured from the back of the sofa, and use that number rather than the bed length. American Leather states that its Revere Comfort Sleeper needs zero wall clearance, which means the sofa can stay against the wall while the bed opens. That tells you the sofa does not have to be pulled out first; it does not tell you how much floor is needed in front.

Where a maker publishes both the closed depth and the bed length, the difference is what the room gives up on the nights the bed is out:

• Monvane Oversized Sofa Bed: 75 minus 38 is 37 inches (94 cm) added.
• IKEA EKHOLMA: 78 minus 41 3/8 is 36 5/8 inches (93 cm) added.

Both land close to three feet. That is the strip of floor, from the front edge of the sofa outward, that has to be clear of a coffee table, a rug you do not want a bed frame on, a radiator or the swing of a door.

Sofa bed sizes by model, in inches and cm

These are the bed sizes each maker publishes. The centimeter figures are conversions at 2.54 cm to the inch, rounded to the nearest whole centimeter.

The spread in width is wider than the spread in length. Every bed here is between 74 and 80 inches long, a 6-inch range, while the widths run from 28 inches to 63 3/8. So, when you are planning the floor, the length is the number that decides fit, and the width decides how many people the bed sleeps.

On price, as listed on ikea.com in September 2026, ÄLVDALEN and SKÖNABÄCK were each $499, the KIVIK 1-seat sleeper was $599 and GRUNNARP was $999. Monvane's Oversized Sofa Bed was $125.99 on sale on monvane.com in September 2026, against a regular price of $169.99.

Is a sleeper mattress the same size as a regular mattress?

Sometimes, and the only way to know is the figure on the listing. The Sleep Foundation's mattress size chart gives the standard US sizes as:

• Twin: 38 by 75 inches (97 by 191 cm)
• Full: 54 by 75 inches (137 by 191 cm)
• Queen: 60 by 80 inches (152 by 203 cm)

The Sleep Foundation adds that exact dimensions can vary by an inch or two between manufacturers, and that thickness is not standardized at all. Set the sleeper beds above against those figures and the pattern is plain: the lengths cluster around the standard, some a little over and some a little under, and the widths wander further.

EKHOLMA is the clearest case. At 63 3/8 inches wide it is more than 3 inches wider than a standard queen, and at 78 inches it is 2 inches shorter than one. A standard queen sheet or topper will be long for it. LYCKSELE, at 55 1/8 by 74, is about a full in width and an inch short of a standard full in length. ÄLVDALEN, at 53 1/8 by 76 3/8, is close to a full in width and slightly longer. The KIVIK 1-seat is narrower than a twin at 35 3/8 inches but 2 1/2 inches longer, at 77 1/2. American Leather's Comfort Sleeper is the one in this set that matches a standard queen length exactly, at 80 inches.

Narrow sizes also exist. An owner on Reddit describes the mattress in an American Leather Today's Sleeper in cot size as about 30 inches wide by 80 inches long, full length but well under a twin's 38-inch width. That owner was hunting for a mattress protector in that size, so with an unusual width, check that sheets and protectors come in it before you buy.

For your guest, compare the bed length with their height plus a few inches for a pillow. A 74-inch bed is 188 cm, and a 78-inch bed is 198 cm. A guest who is tall enough to notice the difference is the one to plan around, and for a single tall sleeper in a very small room, the sleeper chairs compared on bed length cover the chair-sized options.

Mattress thickness

American Leather states the mattress thickness on its listing: the Revere Comfort Sleeper's standard mattress is 5 inches, with Cooling Gel and Tempur-Pedic upgrades offered. For the IKEA models, check the product's measurements tab or ask IKEA for the mattress thickness before ordering, because it is the figure that tells you how much sits between a guest and the frame. Monvane describes the Oversized Sofa Bed's fill as high-density 30D foam.

Thickness also decides whether anything can be added. Monvane's own guidance on sofa bed toppers, on its blog, says to take a topper off before folding the bed and to ask its support team before doing anything else to the product. Before adding height to a pull-out, ask the maker what thickness its mechanism accepts. Toppers, support boards and replacement mattresses are covered in how to make a sofa bed more comfortable.

How to measure your floor for an open sofa bed

This takes a tape measure and about five minutes, and it answers the question before you pick a size.

1. Mark where the back of the sofa will sit. Against the wall for a fold-down back or a sofa like the Revere that needs no wall clearance. If the listing says the sofa has to come away from the wall to open, measure from that point instead. 2. Measure straight out into the room to the first thing a bed would hit and that you would not move each time: the opposite wall, a radiator, a built-in, a door that has to open. 3. Subtract the open length. Use the bed length for a fold-down back or fold-out model, and the open depth from the back of the sofa for a pull-out. 4. Look at what is left. That remainder is the walkway at the foot of the bed. Decide whether it is enough for someone to walk past to the door at night, and whether the coffee table has somewhere to go.

For the walkway, a useful check is to measure a gap you already walk through comfortably at home, such as between a bed and a dresser, and use that as your own minimum.

A 10-foot room, worked through

A room 10 feet deep is 120 inches, or 305 cm. Tom's Guide suggests a room of about 10 by 10 feet for a full-size bed, so it is a fair test for a guest room or office. With the sofa against one wall and the bed opened toward the other, here is what each published length leaves at the foot:

The difference between the shortest and the longest bed is only 6 inches of walkway. In a room this size, every one of these leaves more than three feet at the foot before any furniture goes in, so the real question is what else shares that floor. A coffee table left in place takes a good part of it, which is why I would plan the table as something that moves on the nights the bed comes out. For ÄLVDALEN and the Comfort Sleeper, both pull-outs, the figures are bed lengths; the open depth from the wall will be somewhat longer, so ask for it and redo the subtraction.

Closed size: what the sofa takes up every other day

Most days the sofa is closed, and that is the footprint the room lives with. For closed sofa sizes by seat count, in inches and cm, the sofa dimensions chart has the full range. For the sleepers here, the closed figures on the listings are:

• IKEA EKHOLMA: 74 3/8 inches wide, 41 3/8 deep and 39 3/8 high including the back cushions (189 by 105 by 100 cm).
• Monvane Oversized Sofa Bed: 33.86 inches wide, 38 deep and 16.54 high (86 by 97 by 42 cm). It is a one-seat piece, low to the floor, and Monvane lists a 300-pound weight capacity and one package.
• Monvane Boneless Sleeper Sofa: 75.6 inches wide, 33.86 deep and 31.5 high (192 by 86 by 80 cm) on Monvane's listing. Before ordering it for a tight room, ask Monvane for the open length, since that is the figure the floor has to hold.

If the room is tight in both directions, check the closed depth, such as EKHOLMA's 41 3/8 inches, against the walkway you need on ordinary days, as well as the open length for guest nights. The route in matters too: the doorway, the hall and any stair turn, which how to measure a sofa for delivery walks through.

What to ask when a listing gives only part of the picture

When a figure you need is not on the listing, ask the seller for it. In the order they decide fit:

• What is the open depth, measured from the back of the sofa to the foot of the bed? On a pull-out this is longer than the bed length.
• Does the sofa need to come away from the wall to open, and how far?
• What are the mattress width, length and thickness? Ask for the numbers rather than the size name.
• What is the closed width, depth and height?
• Can a topper stay on when the bed folds? Monvane's answer for its Oversized Sofa Bed is to take it off.

For sleeper sectionals with a pull-out under the chaise or a storage chaise, such as IKEA's FRIHETEN three-seat sectional with storage, check the measurements tab for the bed width and bed length as well as the sectional's overall size, and measure your floor in the direction the bed opens.

Once you know which lengths fit the floor, the choice between models is about the bed itself. The sleeper sofas judged on comfort and mechanism is the place to compare them.

Frequently asked questions

How long is a queen sofa bed when it is open?

Of the queen-width models here, IKEA's EKHOLMA publishes a 78-inch (198 cm) bed and American Leather's Comfort Sleeper an 80-inch (203 cm) one. Those are bed lengths, so for a pull-out, ask the seller for the open depth from the back of the sofa, which will be longer.

How big is a twin or single sofa bed?

Monvane's Oversized Sofa Bed opens to about 38 by 75 inches (97 by 191 cm), close to a standard twin. IKEA's KIVIK 1-seat sleeper is 35 3/8 by 77 1/2 inches, and the SKÖNABÄCK is narrower still at 28 by 74 3/4 inches, so compare the width if two people might share it.

Is there a king size sofa bed?

American Leather's Comfort Sleeper catalog shows king configurations for its Comfort Sleeper models. A king bed is wider than a queen, so check the closed width of any king sleeper against your wall as well as the open length against your floor.

How much room do you need to open a sofa bed?

Take the open length, add the walkway you want at the foot of the bed, and compare that total with the distance from the wall to the first obstacle. In a 10-foot room, the published beds here leave between 40 and 46 inches at the foot.

Measure from the wall to the first thing in the way, subtract the open length, and you will know which sizes your room can take before you look at a single sofa. Once the floor side is settled, PlushPick has the closed widths by seat count in its sofa dimensions chart, for the wall side.