Sofa Dimensions: What Sofas Actually Measure
Most sofas run 80 to 100 inches wide. Across the sofas we carry from 20 brands, the median sofa measures 89 inches wide, 39 deep, and 32 tall, and the narrowest true sofa is 66 inches. Sectionals run far bigger: the median long side is 120 inches. Every number on this page is measured from a real piece in the catalog.
- Median sofa: 89 inches wide, 39 deep, 32 tall, measured across 20 brands.
- Eight in ten sofas fall between 80 and 100 inches wide.
- Genuinely compact sofas are rare: hardly any measure under 76 inches.
- The median sectional runs 120 inches on its long side; the middle of the pack spans 94 to 154.
- An L or U shape adds a second leg of roughly 60 to 130 inches, so measure both walls.
- 89 in
- Median sofa width
- 39 in
- Median sofa depth
- 120 in
- Median sectional length
- 20
- Brands measured
How wide is a normal sofa?
Measured across the sofas in our catalog, the middle 80 percent run from 80 to 100 inches wide, with the median at 89. That is wider than most rules of thumb suggest, and it is worth taking seriously when you plan a wall: an 89 inch sofa wants a wall of at least 8 feet once you leave breathing room at each end.
Truly compact sofas are rarer than shoppers expect. Only a handful measure under 76 inches, and the narrowest is 66. If your space needs something smaller than that, you are shopping for a loveseat or an apartment sofa, and it pays to search by those words rather than scrolling past full-size pieces.
Depth and height
Overall depth, front of the seat cushion to the back of the frame, runs 35 to 44 inches across our sofas, with the median at 39. Deeper than 40 reads as a lounging sofa; shallower than 36 sits more upright. Height, floor to the top of the back, runs 28 to 36 inches with a median of 32, which is low enough to float under most windowsills.
One caution when you read a product page: overall depth is not seat depth. A 44 inch deep sofa with thick back cushions can have less usable seat than a 38 inch one. The product page's dimension diagram is where that detail lives.
Sectional dimensions
The sectionals we carry run bigger than most people plan for: the middle of the pack spans 94 to 154 inches on the long side, with the median at exactly 120, which is 10 feet of furniture. The seating body is about as deep as a regular sofa, 42 to 43 inches.
The second number matters just as much: an L or U shape adds a chaise or return leg that spans roughly 60 to 130 inches across our catalog depending on configuration. Measure both walls, and remember the corner seat belongs to both legs at once, so a 120 by 90 sectional seats fewer people than the footprint suggests.
Will it actually fit through the door?
Room fit and delivery fit are different questions. The room cares about width and depth; the doorway cares about the sofa's diagonal depth when it is tipped on its side. Measure from the highest point of the back down to the front bottom edge of the arm and compare that diagonal to your narrowest opening on the route in. Our full walkthrough covers hallway turns, stairwells, and the leg-removal trick.
Three sizes, three real pieces
West Elm
Mella Sofa
📏 67.3"W x 33.3"D x 28.7"H
Unlock Member Pricing →
Castlery
Sofa, Performance Brilliant White
📏 88.6"W x 39.5"D x 32.3"H
Unlock Member Pricing →Arhaus
Beale Four Piece Sectional
📏 129.0"W x 86.0"D x 35.0"H
Unlock Member Pricing →Frequently Asked Questions
What is the standard sofa size?
How wide is a small sofa?
How deep should a sofa be?
How long is a sectional?
Are these numbers averages or estimates?
Shop these pieces at member pricing
Joining is free, and every membership includes design help from our team. How the club works