Sofa sizes, and the room they need
Updated 10 October 2026
A three-seat sofa is usually 72–96 in (183–244 cm) long, 32–40 in (81–102 cm) deep and 30–36 in (76–91 cm) tall. Leave 30–36 in (76–91 cm) for anywhere people walk past it and 14–18 in (36–46 cm) between the sofa and the coffee table. It will get through a door if the smaller of its height and depth is at least an inch narrower than the opening.
Standard sofa dimensions
Makers vary, so these are the ranges most sofas fall into. Measure the one you are buying; the product page always lists it.
| Sofa | Length | Depth | Seats |
|---|---|---|---|
| Loveseat | 52–64 in · 132–163 cm | 32–38 in · 81–97 cm | 2 |
| Apartment sofa | 68–78 in · 173–198 cm | 32–36 in · 81–91 cm | 2–3 |
| Three-seat sofa | 72–96 in · 183–244 cm | 32–40 in · 81–102 cm | 3 |
| Four-seat sofa | 96–110 in · 244–280 cm | 34–40 in · 86–102 cm | 4 |
| L-shaped sectional | 95–120 in · 240–305 cm each way | 36–40 in · 91–102 cm | 4–6 |
| Chaise end | adds 60–70 in · 152–178 cm of depth | — | — |
Heights: the back is 30–36 in (76–91 cm) from the floor, the seat 17–19 in (43–48 cm). Arms take 4–12 in (10–30 cm) off each end of the length you can actually sit on.
The room a sofa needs
| Between the sofa and… | Leave | Why |
|---|---|---|
| A wall or furniture people walk past | 30–36 in · 76–91 cm | One person walking without turning sideways |
| The coffee table | 14–18 in · 36–46 cm | Reach a cup; still get your legs through |
| A chair facing it | 4–8 ft · 1.2–2.4 m | Close enough to talk, far enough to stretch |
| The TV | 1.5–2.5 × the screen's diagonal | A 65 in screen: 8–13 ft (2.4–4 m) |
| A door that opens into the room | The door's width, plus 6 in · 15 cm | So the door still opens fully |
In a 12 × 12 ft (3.7 × 3.7 m) living room, an 84 in (213 cm) sofa, a coffee table and two armchairs fit with the walkways above. A 96 in (244 cm) sofa or a sectional with a chaise wants 14 ft (4.3 m) on at least one side.
Will it fit through the door?
This is where most sofas fail, and it is a one-minute check. Interior doors are usually 28–32 in (71–81 cm) clear; front doors 36 in (91 cm). Measure the opening with the door open, frame to frame.
- Take the sofa's height and depth. The smaller of the two is what goes through the door first, with the sofa on its side or its back.
- If that number is at least 1 in (2.5 cm) less than the opening, it fits. Legs usually unscrew and buy you 4–6 in (10–15 cm); loose cushions come off.
- Corners are the real test. A hallway narrower than the sofa's depth plus about 12 in (30 cm) means standing the sofa on its end to pivot round the corner — so the ceiling has to be taller than the sofa is long.
- Stairs: the same rule as corners, at every landing. Measure the narrowest landing, not the stair width.
If it is close, ask the shop for the packaged dimensions: a boxed sofa can be 2–4 in (5–10 cm) bigger each way.
Check it in your room. Open Won't Fit with a living room already drawn, change the walls to your measurements, and drop in a sofa at the size you are buying. It tells you what blocks the door and where you cannot walk. Free for two rooms, no account.
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