The average living room in the US is about 12 × 18 feet, or 216 square feet: that's the standard living room size Angi and Wayfair both give. They put a small one at about 10 × 13 (130 sq ft) and a large one at 300 sq ft or more. We ran each size through our living room layout planner: a 12 × 18 fits an 84 in sofa, two armchairs, a coffee table and a TV at least three ways with 30 in walkways, and a 10 × 13 fits the sofa and one chair, one way.
What is the average living room size?
Two of the three guides we checked land on the same number. Angi calls 12 × 18 feet (216 sq ft) the standard living room and the most common size in the US, and Wayfair gives the same 12 × 18 as the average. Either side of that, the sources spread out:
| Size | Angi | Wayfair | Plank and Pillow |
|---|---|---|---|
| Small | 10 × 13, 130 sq ft | About 10 × 13 (130 sq ft) or smaller | 10 × 12 to 12 × 18 |
| Average or medium | 12 × 18, 216 sq ft, the most common | 12 × 18, 216 sq ft | 14 × 20 to 16 × 20, the most common |
| Large | 300 sq ft or more, such as 15 × 20, 15 × 28 or 18 × 30 | 15–20 × 20 (300–400 sq ft) or larger | 18 × 24 and up |
Room sizes in feet, from each guide (see Sources). We write the short side first: Angi gives its large rooms as 20 × 15, 28 × 15 and 30 × 18 feet.
So "average" depends on who you ask: 216 square feet from Angi and Wayfair, or 280 to 320 square feet (14 × 20 to 16 × 20) from Plank and Pillow. Angi puts most living rooms between 130 and 420 square feet. Wayfair's rule of thumb is that the living room should take 7.5–11% of the home: in a 2,000 sq ft home, that's 150 to 220 sq ft.
What fits in each living room size
Square feet don't tell you whether your sofa fits. We ran every size above through the engine behind our living room layout planner: four sofas from a 60 in loveseat to a 96 in sectional, none, one or two armchairs, and a TV on the wall across from the sofa, at all three clearance settings. Each room has a 32 in door near a corner of one side wall and a 60 in window centered on the other, the same setup as our living room layout ideas.
| Room | Sofa + 1 chair | Sofa + 2 chairs | Sectional + chair |
|---|---|---|---|
| 10 × 13 130 sq ft, small | 1 | No | 24 in paths only |
| 12 × 18 216 sq ft, average | 3+ | 3+ | 3+ |
| 14 × 20 280 sq ft, medium | 3+ | 3+ | 3+ |
| 15 × 20 300 sq ft, large | 3+ | 3+ | 3+ |
| 16 × 20 320 sq ft, medium | 3+ | 3+ | 3+ |
| 20 × 20 400 sq ft, large | 3+ | 3+ | 3+ |
| 18 × 24 432 sq ft, large | 3+ | 3+ | 3+ |
Number of layouts the living room layout planner finds at its standard setting (30 in walkways, 16 in from the sofa to the coffee table), with an 84 × 37 in sofa, a 48 × 24 in coffee table, 32 × 32 in armchairs, a 60 in TV console and a 96 in sectional with a 65 in chaise. It shows up to three, so 3+ means at least three. A sofa and a TV on their own fit every size. Small, average and large as Angi and Wayfair size them; medium and 18 × 24 from Plank and Pillow; 20 × 20 is the top of Wayfair's large range.
The average 12 × 18 fits everything the planner offers. The sofa with two chairs fits three ways at the standard setting, and still three ways at the roomy one (36 in walkways, 18 in to the coffee table). Every one of those layouts puts the sofa on an 18 ft wall, under the window, facing the TV across the 12 ft width. A foot shorter makes a difference: in a 12 × 17, the sofa and two chairs fit only one way.
The small 10 × 13 is tight. An 84 in sofa with one chair fits one way, on a 10 ft wall. No sofa takes two chairs at 30 in paths; at the minimum setting (24 in paths) a 60 in loveseat does, in one layout. A sectional takes a chair only at the minimum setting. Our 10×12 living room layouts work through the same squeeze a foot shorter.
Above 12 × 18, every combination fits at every setting. The planner plans one seating group with up to two armchairs (with a sectional and a TV, one chair, at the open end), so in a bigger room the extra floor goes around the group rather than into more seats.
The door matters as much as the size. In the 12 × 18, we moved the door to five other spots and added a second doorway two ways. At the standard setting, the sofa and two chairs still fit every time but one: with the door in the middle of the long wall across from the window, they don't fit at any setting. A sofa with one chair still fits three ways there, and a sectional with a chair two ways.
In a bigger room, the TV ends up farther away
The planner puts the TV on the wall the sofa faces, so your distance from the screen is the room's depth minus 26 in: 4 in behind the sofa, 18 in to your head and 4 in from the wall to the screen. It then lists the TV sizes from 43 to 98 in that fill 30–40° of your view, from about 30°, a good everyday size, to THX’s 40° for movies.
| Sofa wall to TV wall | Seat to screen | TV for a 30–40° view |
|---|---|---|
| 10 ft 10 × 13 across, 24 in paths only | 7 ft 10 in | 65 to 77 in |
| 12 ft 12 × 18, across | 9 ft 10 in | 75 to 98 in |
| 13 ft 10 × 13, lengthwise | 10 ft 10 in | 83 to 98 in |
| 14 ft 14 × 20, across | 11 ft 10 in | 98 in |
| 15 ft 15 × 20, across | 12 ft 10 in | 98 in |
| 16 ft 16 × 20, across | 13 ft 10 in | None |
| 18 ft 12 × 18 lengthwise; 18 × 24 across | 15 ft 10 in | None |
| 20 ft 14 × 20 to 20 × 20, lengthwise | 17 ft 10 in | None |
From the living room layout planner's engine, for a sofa against the wall. TV sizes from its list: 43, 50, 55, 65, 75, 77, 83, 85 and 98 in.
In the average 12 × 18, that's why the sofa goes on a long wall: across the 12 ft width you sit 9 ft 10 in from the screen, but facing down the 18 ft length you'd be 15 ft 10 in away. Past 15 ft 6 in from wall to wall, no size up to 98 in fills 30° of your view, so in a 16 × 20, a 20 × 20 or an 18 × 24, none of the planner's layouts has a standard TV size in that range. In a large room, bring the seating in from the wall: every foot you move the sofa forward takes a foot off that distance, and the space behind it becomes a walkway. How far should the couch be from the TV? works through the distance in seven real rooms.
3 living rooms, drawn by the living room layout planner
Small, average and large, as Angi and Wayfair size them. Each plan is the planner's own drawing at the standard setting (30 in walkways, 16 in from the sofa to the coffee table), with the door near the bottom of the left wall and the window centered on the right wall.
Layout A: Small: a 10 × 13 with a sofa and a chair
1 layout
The 84 in sofa backs onto a 10 ft wall, 1 in from the window wall, and the armchair sits at its other end, 2 in from the arm and 20 in from the end of the coffee table. The TV is on the opposite 10 ft wall, 10 ft 10 in from your seat, with 58 in between the table and the TV console. Turning the sofa to face across the room doesn't work at this setting: under the window, sofa, table and TV need 4 + 37 + 16 + 24 + 24 + 16 + 1 = 122 in, 2 in more than the 10 ft width.
Best for: a narrow room where the TV can go on a short wall.
The trade-off: one chair is the limit. From 10 ft 10 in, the planner suggests an 83 to 98 in TV for a 30–40° view; a 55 in fills about 21°.
Layout B: Average: a 12 × 18 with a sofa and two chairs
3 layouts
The sofa sits under the window on an 18 ft wall, and the TV goes straight across the 12 ft width: 9 ft 10 in from your seat, with 46 in between the coffee table and the TV console. The two chairs face the coffee table from its ends. Chairs and sofa take 32 + 2 + 84 + 2 + 32 = 152 in of the room's 18 ft length, which leaves 32 in at each end.
Best for: the average room: three seats around one table, with the two chairs facing each other 88 in apart, inside the 8 ft the planner allows for conversation.
The trade-off: the TV shares the left wall with the door, so people walk in beside the screen. Move the door to the middle of that wall and the second chair no longer fits.
Layout C: Large: a 15 × 20 with a sectional and a chair
3 layouts
The 96 in sectional sits under the window on a 20 ft wall, 72 in from each end wall, with its chaise at the top. The coffee table tucks in beside the chaise, and the armchair sits at the other end. The TV is across the 15 ft width, 12 ft 10 in from your seat and 82 in past the coffee table.
Best for: a large room where everyone wants to face the TV.
The trade-off: the screen is far away. From 12 ft 10 in, only a 98 in TV fills 30–40° of your view, and a 55 in fills about 18°. The planner's other two layouts face the sectional down the 20 ft length, 17 ft 10 in from the screen, where no standard size reaches 30°.
The numbers we checked
These are the numbers behind every table and plan on this page.
The room sizes come from Angi, Wayfair and Plank and Pillow. The walkways come from Houzz and Homes & Gardens, the sofa-to-table gap from Houzz, Homes & Gardens and Ballard Designs, and the viewing angles from THX, LG and SMPTE’s cinema guideline, as on the living room layout planner page.
- Wall to wall both ways, at floor level. Length × width gives the square feet.
- Every door and opening, and where each one sits along its wall. In a 12 × 18, a door in the middle of the long wall across from the window cost a chair.
- Windows, radiators and vents on the walls where the sofa or the TV might go.
- Your sofa's outside size, arms included, and the chaise length on a sectional.
Smaller room? The living room layout ideas has measured plans for seven common sizes, from 10×12 to 12×15, including 12×14 and 12×15. Living and dining in one room? See how to divide a living-dining combo.
Questions
How big is a living room?
Most are 130 to 420 square feet (Angi). The average is about 12 × 18 feet, or 216 sq ft, according to Angi and Wayfair. A small one is about 10 × 13 (130 sq ft), and a large one 300 sq ft or more.
What is the average living room size in square feet?
216 square feet, a 12 × 18 room (Angi, Wayfair). Plank and Pillow calls 14 × 20 to 16 × 20 the most common size, which is 280 to 320 square feet.
How big should a living room be?
Big enough for your seating plus the walkways. In our living room layout ideas, 10 × 12 is the smallest room that fits an 84 in sofa, a chair and a TV with 30 in walkways, and 12 × 14 the smallest for two chairs. Wayfair's rule of thumb is 7.5–11% of the home's floor area.
What is a good size living room?
About 12 × 18. At that size the living room layout planner finds at least three layouts for every sofa and chair combination it offers, at all three clearance settings. A 12 × 17 fits a sofa and two chairs only one way.
What size rug for a 12 × 18 living room?
A 10×14. It's the biggest standard size our Rug Size calculator fits, with at least 12 in of floor at the walls and 42 in of rug past each end of an 84 in sofa. The rule of thumb is to take 2 feet off each way and buy the biggest standard rug that fits; what size rug for a living room explains it.
Can two sofas fit in an average living room?
Two 84 in sofas facing each other need 136 in from wall to wall and 132 in along the walls, by the sums in our two sofas facing each other guide. A 12 × 18 is 144 in wide, so they fit across it with 8 in to spare, but not with a walkway behind one sofa: that needs 162 in.
Sources
- Living Room Size: Guide to Standard Dimensions (Angi): 12 × 18 standard and most common; small 130 sq ft (10 × 13); large 300 sq ft or more; 130–420 sq ft
- What Is the Average Living Room Size? (Wayfair): average 12 × 18; small about 10 × 13; large 15–20 × 20; 7.5–11% of the home
- Average Living Room Size: Dimensions and Styling Tips (Plank and Pillow): small 10 × 12 to 12 × 18; medium 14 × 20 to 16 × 20; large 18 × 24 and up
- How to Get Your Furniture Arrangement Right (Houzz): 24″ minor and 30–48″ major walkways; 14–18″ to the coffee table; seats within 8 feet
- A guide to living room clearances, measurements and spacing (Homes & Gardens): 30–36″ walkways, 24″ in tight rooms; 14–18″ to the coffee table
- How to space furniture in your room (Ballard Designs): 14–18″ from sofa to coffee table
- How to Choose the Right TV Size for Your Room (LG): screen size = viewing distance ÷ 1.2, for a 40° view
- What size TV should I buy for my living room? (THX): screen size = viewing distance × 0.835, the same 40°
- EG 18-1994: Design of Effective Cine Theaters (SMPTE, withdrawn in 2003): a picture filling about 30° of the farthest seat’s view, where the common 30° comes from