Sofa Dimensions: A Complete Sizing Guide

A standard sofa is 84 to 96 inches long, 35 to 40 inches deep, and 30 to 36 inches tall. Apartment sofas run 72 to 84 inches, loveseats 52 to 70 inches, and a two-piece sectional usually starts around 95 inches on its long leg and goes past 120. Seat height sits near 18 inches on most of them and seat depth near 21 to 24 inches, which is a different number from the overall depth and the one that decides how the sofa actually feels.

Those ranges hold up against what we actually sell. The typical sofa we carry is 88.6 inches wide, and two thirds land between 84 and 96. Depth is usually about 39 inches and height about 32.

Below: the sizes by type, the clearances around the sofa, what seat depth means, and the four measurements to take before you order.

Standard sizes by sofa type

The sectional row reads differently on purpose. A sectional's listed depth is the footprint of the whole L, not the front-to-back depth of one leg, so each leg of a 120 by 85 inch sectional runs about 39 inches deep overall like any other sofa. The typical sectional we carry measures 120 inches on its long side.

What a sofa costs

We carry 127 sofas from 34 brands and 54 sectionals from 18. Sofas run roughly $1,450 to $5,900 and center near $2,600. Sectionals center around $5,500 and climb well past $10,000 at the top. Prices move, so the live number is always on the product page.

One thing worth knowing before you shop: almost nothing is sold as an apartment sofa. Fewer than one in forty of the sofas and sectionals we carry is presented that way, so the name rarely tells you the scale. The dimension list does.

The fit rules

Walkways

Leave 30 to 36 inches for any path people walk through regularly, and never less than 24 inches to squeeze past. This is the measurement that decides whether a room feels calm or whether everyone turns sideways at the same spot every day.

Coffee table gap

Leave 18 inches between the sofa and the coffee table. That is close enough to reach a glass from a seated position and far enough to stand up without a shin bruise. Fourteen inches is tight, 24 is a stretch.

The table itself should be about two thirds the length of the sofa, and its top within a couple of inches of the seat height.

The two-thirds wall rule

The sofa should take up about two thirds of the wall it sits against. On a 12 foot wall that is a 96 inch sofa; on a 10 foot wall it is closer to 80. The remaining third holds a side table and a lamp on one end and breathing room on the other.

Push past three quarters and the room reads crowded even when the walkways technically clear. Come in under half and the sofa looks stranded.

Behind and beside

Eighteen inches behind a floating sofa is enough to walk. Three inches is enough for a console table to sit flush without touching the frame. Give each end 6 to 12 inches of clear floor if you want a side table there.

Seat depth vs overall depth

Overall depth is the outside measurement, back panel to front edge of the seat cushion, and it is the number retailers list. Seat depth is the usable cushion, front edge to the face of the back cushion, and it is the number you feel.

A sofa with 40 inches of overall depth typically gives 21 to 24 inches of seat. The gap is the thickness of the back cushion plus the frame.

Which one you want depends on how you sit:

• 21 to 22 inches of seat. Upright and easy to get out of. Good for a formal room, for anyone under about 5'4", and for a room where the sofa doubles as everyday seating rather than a nap spot.
• 23 to 24 inches. The middle, and where most sofas land. Comfortable with your feet on the floor.
• 25 inches and up. A lounge seat. You sit back into it with your feet up, which is lovely and means most people cannot put their feet on the floor without perching on the edge. Deep-seat sofas usually need extra pillows to be usable upright.

About one in seven of the sofas and sectionals we carry is built as a deep seat, so it is a real category rather than a marketing word, and it is a choice to make deliberately.

Seat height matters less but is worth a glance. Most sofas sit 17 to 19 inches off the floor. Under 16 and standing up takes noticeably more effort.

Sizing for an apartment

In a room where the sofa wall is under 12 feet, look at 72 to 84 inches wide and under 36 deep. That combination seats three across and leaves the walkway intact, which a standard 88 inch sofa at 40 deep often will not.

Two other things buy you space in a small room. Exposed legs let light and floor show under the frame, so the piece reads lighter than its footprint. Slim track arms give you seat instead of arm: a 3 inch arm on an 80 inch sofa leaves 74 inches of seating, while a 9 inch rolled arm leaves 62.

If the room is genuinely small and you are weighing a sectional against a sofa, the sectional guide has real widths for the compact configurations: best sectionals for small spaces.

Three sofas across the size range

Mella Sofa by West Elm is 67.3 inches wide, 33.3 deep and 28.7 tall, which puts it below apartment scale and into the range where it works as a loveseat replacement. It is a minimalist take on a bat wing back, low to the ground, and West Elm scales it for apartments and smaller rooms. Upholstery is 100 percent polyester performance velvet.

Hamilton Sofa by Castlery measures 88.6 by 39.5 by 32.3 inches, which is almost exactly the typical sofa we carry on all three dimensions. It has deep seats and extra cushions in a minimalist silhouette. The fabric is 97 percent polyester and 3 percent acrylic. A useful reference point: if you are trying to picture what a standard sofa does to your floor plan, this is the shape of it.

Carmel Square Wide Arm Upholstered Sofa by Pottery Barn runs 98.5 by 40 by 33 inches and weighs 220 pounds, so it is a grand-scale piece for a long wall. It pairs wide structured square arms with down-blend cushions. Note what those wide arms cost you: at 98.5 inches overall it seats about as many people as a narrower sofa with slim arms.

West Elm

Mella Sofa

$799Retail $799Members save 10 to 50% below retail

📏 67.3"W x 33.3"D x 28.7"H

Unlock Member Pricing →

Castlery

Sofa, Performance Brilliant White

$1,899Retail $1,899Members save 10 to 50% below retail

📏 88.6"W x 39.5"D x 32.3"H

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Pottery Barn

Carmel Square Wide Arm Upholstered Sofa

$3,299Retail $3,299Members save 10 to 50% below retail

📏 98.5"W x 40.0"D x 33.0"H

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The delivery check

A sofa that clears the floor plan can still fail to make it through the door. Take these four measurements before you order.

1. Diagonal depth of the sofa. Measure from the highest point of the back down to the front bottom edge of the arm. That diagonal is what has to clear a doorway when the sofa is tipped on its side, and it is smaller than the height, which is why sofas that look too big often go through.
2. Every doorway on the route. Width and height, including the front door, and remember that an open door eats an inch or two of the frame. Interior doors are often 30 to 32 inches.
3. Hallway width and any turn. A straight hallway needs to be as wide as the sofa is deep. A 90 degree turn needs a hallway roughly as wide as the sofa is long, or a room to swing into.
4. Stairs and elevators. Measure the stairwell at its narrowest, including the handrail, and the elevator door and car if there is one. If your building has a service elevator, check whether it needs to be reserved before delivery day.

Two things that save a delivery: legs on most sofas unscrew, which buys 4 to 6 inches of height, and a bench-seat sofa with one cushion is often easier to angle than a three-cushion frame of the same width.

Tape the sofa's footprint on the floor before you buy. Painter's tape takes ten minutes and shows you the walkway problem that a measurement on paper hides.

What members pay

DDC members buy the sofas above for less than retail. Design help from the DDC design team is part of every membership and reachable any time, so you can send over a floor plan and get a second opinion on the size before you commit. That designer relationship is what puts members on designer-level pricing. Members typically save 10 to 50 percent below retail.

Before you order

Measure the wall, the walkways and the route in. Tape the footprint. Then check the sofa's own dimension list rather than its name, because the name almost never tells you the scale.

When you have the numbers, browse living room furniture to see sofas next to the tables and rugs they have to work with, or go straight to West Elm or Pottery Barn.

Join designerdiscount.club for free to shop sofas, sectionals and the rest of the room from the stores you already love, with design help from our team along the way.