The deepest pit-style couch IKEA sells today runs about 40 inches from front edge to back cushion. That's the number I wish I'd known before I signed for delivery. Total length is what everyone talks about — 90 inches, 100, whatever — but the depth is what changes your room. A 40-inch-deep seat means the back of the sofa sits nearly four feet off the wall if you leave any walkway at all.
Why the depth number matters more than the length
Length tells you how many people can lie down. Depth tells you whether you can walk past the coffee table. For a pit couch — which is just a sectional or sofa built for sprawling — depth is the whole point. But it's also what eats your floor space.
The Kivik, for instance: seat depth around 27 inches, but the overall depth with back cushions is near 39 inches. The Soderhamn? Same ballpark, around 38-40 inches depending on how you set the chaise. Some people call a pit couch anything over 30 inches of seat depth. If that's your bar, IKEA's bigger sectionals qualify. But the word "pit" gets thrown around with zero standards, so verify the spec sheet's measured depth, not the marketing photo.
What a pit couch actually feels like at home
After a month of using the Kivik as our main lounging spot, the depth feels right for lying down. My feet don't hang off. But sitting upright, I have to prop with a pillow. The back support just isn't there when you sit at the front edge. That's not a flaw; it's the trade-off. You gain sprawl, you lose sit-up posture. If you watch three hours of TV sitting up, a pit couch is a bad fit. If you want Sunday naps and kids building pillow forts, it's better than any "chair-height" sofa I've owned.
One thing nobody tells you about deeper seats: the cushions shift. On the Kivik, the seat cushions slowly migrate forward after a week. I'm re-fluffing and shoving the back cushions every Saturday. It's not a dealbreaker, but it's maintenance — and with fabric covers it's also a wash cycle every couple months if you have animals.
The physical squeeze: moving and doorways
Before ordering, measure your front door, hallway, and stairs. The Kivik ships in boxes — the chaise is a 160x80 centimeter slab with a cover. That fits standard doors. But some larger sectionals ship whole pieces, not flat-packed. If you live above the third floor in a walk-up, check the delivery truck's turn radius. My friend got a Soderhamn in a narrow 1920s building and needed to cross-arm the movers just to hit the landing. Plan for two people and a little creative angling.
You can't uncurl a mis-measured room. So take a tape and mark the exact footprint on your floor with painter's tape. Include the 18 inches you might want for walkway. If the tape blob leaves less than a foot to the TV stand, either size down or shift the layout. Trying to force a pit couch in a too-small room is the fastest way to a living room that feels like a bowling alley shoe rental. I did that once with a different sectional — six months of pushing past the chaise to the balcony door. I won't again.
What you gain, what you give up
The price tier for pit-style IKEA sectionals runs $800 to $1,800. At the low end, the basic 3-seat Soderhamn corners around $900, but you'll spend extra for a chaise or covers later. The Kivik sits closer to $1,200, and the Finnala hovers north of $1,400. The extra cash buys you sturdier frames, thicker seat cushions, and better covers — but not a deeper pit. The depth stays similar across the line. So choose by firmness and fabric, not just the footprint.
Cheaper ones also bounce more when two people sit. The Soderhamn feels slightly hollow under the chaise when I tested it. That's fine for guests, but if the pit is your primary couch, I'd lean toward the Kivik's frame or the Finnala. You'll feel the difference after the third marathon movie binge.
One honest trade-off: deeper seats mean less living room. My table had to move two inches closer to the TV just to keep a proper aisle. My next purchase will be a lift-top coffee table to reclaim some of that lost counter space — Lift Up Coffee Table IKEA: What I Learned After Measuring My Couch Gap. In small rooms, every inch counts.
Measuring tricks I wish I'd used
Template method: tape out the sofa's footprint, then actually sit where you'd sit and leave a book on the floor as a proxy. Crouch down to your normal seated height, then stand up. If you clip the tape line with your knee, it's too tight. That catches depth miscalculations better than any measurement math.
Also measure the path, not just the square footage. From the door to the spot, mark the width you need. I once got through the front door but stalled at a hallway radiator. Check every doorway, even the ones you'd never guess — laundry room doors, balcony slider, whichever.
If you aren't sure the 40-inch depth fits, step back to a standard-depth sofa (around 36 inches). You'll give up some sprawl but gain better circulation. Also read the IKEA Backsalen tale I wrote about — I lost a week to a mismeasured chaise depth there, and the lesson applies to any sectional: IKEA Backsalen Sectional: The Measurement That Made Me Rebuy It.
My own mistake and the fix
We bought a 100-inch Kivik configuration, thrilled at the built-in sleep space. The depth worked in the showroom because the floor is wider. In my apartment, the chaise blocked the radiator throw rug. After one cold week, I had to rotate the chaise 90 degrees. That gave us a functional pit for gaming, but it made the TV viewing angle crooked. I finally swapped a cover extension to add a tray table on the chaise, which gave me somewhere to put a drink without leaning over.
Take 15 minutes with a tape and mark out your walkways too, not just the couch width. You'll thank yourself a month later.
What to do next
Grab the current IKEA product page for the model you're eyeing and write down the overall depth in the spec. Then tape it on your floor. If you still have room to walk past the coffee table with a mask, you're good. If not, either size down or reconsider a corner setup where the pit sits perpendicular to traffic. For a deeper dive into layout mistakes, check IKEA Sectional Sofa: Four Rooms, Four Lessons in Measuring Wrong. And once it's in, don't forget to remeasure the actual gap — the spec sheet is an approximation until the couches sit where they sit.