Our pick for your room
Black Friday deal
LG 55-inch C6 OLED (2026)
Best for OLED 4K TV
- Fills 28° of your view
- 3 ft 11 in of wall each side
- Centre 3 ft 6 in off the floor
$999.99 · Save $400Amazon price on Oct 31, 2026
Lowest price ever
TV size calculator: see it in your room in 3D before you buy
Tell it how far you sit and how big your room is. It works out the right screen size from the SMPTE and THX viewing standards, builds your room in 3D so you can see the TV to scale, and shows TVs in that size worth buying.
From 8 ft away · Everyday TV & sports
Get a 55-inch TV
A 55″ fills 28° of your view; SMPTE recommends about 30°. Also just right: 65″.
Your viewing angle
Try a size
55″: Just rightfills 28° of your view
Best: 55″ TV55″ just right
Your room
ft
8 ftfrom your eyes
ft
12 ft
ft
14 ftTV wall to back wall
ft
8 ft
What you watch most
SMPTE: the screen fills about 30° of your view.
A 55-inch TV in your room
Just right- Share of your view
- 28° (target 30°)
- Screen size
- 4 ft wide × 2 ft 3 in tall
- Wall left on each side
- 3 ft 11 in
- Mount it at
- Centre 3 ft 6 in up, bottom edge 2 ft 4 in
Sizes are for a 16:9 screen; the frame adds about an inch. If it will sit on furniture, check the listing for the size with the stand.
55-inch TVs for your room
See all 55-inch TVsAlso worth a look
Black Friday deal
Sony 55-inch BRAVIA 6 OLED (2026)
Best for OLED 4K Google TV
$998 · Save $349Amazon price on Oct 31, 2026Lowest price ever
Best Overall
LG C5 OLED 55"
Best for movies, sports and gaming in one TV
See today’s price on Amazon
Best for Movies
Sony Bravia XR8B OLED 55"
Best for film fans and PS5 owners
Usually $2,200–$2,400Checked Oct 11, 2026
Complete your setup
What people usually buy with a 55-inch TV.
Wall mount
Best Overall
SANUS Tilting TV Wall Mount
Takes 37–80″ TVs, so a 55″ fits. Best for most TVs in most rooms
Usually $50–$70Checked Oct 21, 2026
Soundbar
Best Overall
Sonos Beam Gen 2
Best for most TVs, plus music streaming
Usually $400–$500Checked Oct 10, 2026
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TV size by viewing distance
The exact size that fills each standard’s viewing angle, and the closest size TVs are sold in.
| Seat to screen | Everyday TV & sports (SMPTE 30°) | Movies & gaming (THX 40°) |
|---|---|---|
| 4 ft (1.22 m) | 32″ (exact 30″) | 43″ (exact 40″) |
| 5 ft (1.52 m) | 32″ (exact 37″) | 50″ (exact 50″) |
| 6 ft (1.83 m) | 43″ (exact 44″) | 65″ (exact 60″) |
| 7 ft (2.13 m) | 50″ (exact 52″) | 75″ (exact 70″) |
| 8 ft (2.44 m) | 55″ (exact 59″) | 85″ (exact 80″) |
| 9 ft (2.74 m) | 65″ (exact 66″) | 85″ (exact 90″) |
| 10 ft (3.05 m) | 75″ (exact 74″) | 98″ (exact 100″) |
| 11 ft (3.35 m) | 85″ (exact 81″) | 98″ or a projector (exact 110″) |
| 12 ft (3.66 m) | 85″ (exact 89″) | 98″ or a projector (exact 120″) |
| 13 ft (3.96 m) | 98″ (exact 96″) | 98″ or a projector (exact 130″) |
| 14 ft (4.27 m) | 98″ or a projector (exact 103″) | 98″ or a projector (exact 140″) |
| 15 ft (4.57 m) | 98″ or a projector (exact 111″) | 98″ or a projector (exact 150″) |
How the calculator works
Viewing angle, not guesswork. A TV looks big or small depending on how much of your view it fills. SMPTE, the body that sets film and TV engineering standards, recommends at least 30° side to side; THX recommends about 40° for a cinema feel. The calculator works out the screen width that fills that angle from your seat and turns it into a 16:9 diagonal.
The closest real size. TVs come in set sizes, so it picks the one whose angle comes closest to the target and colours the rest: green is within 4° under to 6° over the target, amber is a bit small or a bit big, red is far off or does not fit your wall.
Your wall and ceiling. It adds the frame (about half an inch each side), checks there is at least 6 in of clear wall on each side, and puts the centre of the screen at seated eye height, about 42 in (107 cm) from the floor. The 3D room is drawn to scale from your numbers; each floor square is 1 ft.
What it can’t know. Frames and stands vary a little between models, so check the listing’s dimensions before you buy, and measure the distance from your eyes, not from the front of the sofa.
By Jamilur Rahman. Prices on this page are from our guides and change on Amazon; we earn from qualifying purchases.
Questions people ask
What size TV for 10 feet away?
About 75 inches for everyday viewing: from 10 ft a 75-inch fills 30.5° of your view, right on the SMPTE target. For a cinema feel (THX 40°) you would want about 100 inches, so a 98-inch TV or a projector.
What size TV for 8 feet away?
Between 55 and 65 inches for everyday viewing: a 55-inch fills 28° of your view and a 65-inch 33°, both close to SMPTE’s 30°. For movies and gaming, 75 to 85 inches (38° and 42°) gets you near THX’s 40°.
What size TV for a bedroom?
Measure from your pillow to the wall. Most beds put you 6 to 9 ft from the TV, which works out to about 43 to 65 inches for everyday viewing: 43 in at 6 ft, 50 in at 7 ft, 55 in at 8 ft and 65 in at 9 ft.
Is a 65-inch TV too big?
Usually not. From 8 ft a 65-inch fills about 33° of your view, close to the SMPTE target. From 6 ft it fills 43°, which is cinema territory: great for movies and games, a lot for the news. It is only too big if the wall is narrow: with its frame a 65-inch is about 58 in wide, so you want at least about 5 ft 10 in of wall.
How high should I mount my TV?
Put the centre of the screen at your eye height when seated, usually about 42 in (107 cm) from the floor. For a 65-inch TV that puts the bottom edge about 26 in up. Mounted high, for example over a fireplace, you end up tilting your head back to watch.
How do I measure my viewing distance?
Sit where you usually watch and measure from your eyes to where the screen will hang. If you measure from the front edge of the sofa instead, add about 1.5 ft: your eyes sit further back than the cushion’s edge.
Does 4K change the right size?
It lets you sit closer without seeing pixels. With 20/20 vision you can sit as close as about 0.8 times the diagonal (about 4 ft 3 in from a 65-inch 4K TV) before you can pick out pixels, so in most living rooms the viewing angle, not the resolution, is what limits the size.
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