TvSize.app

Free · no sign-up · 24 to 100 inches

Visualize your TV size right on your wall.

Compare TV sizes for real: upload a photo of your wall, mark a known length and see every size to scale.

  • Your photo stays on your device
  • Works with any phone photo
  • Save and share the result as an image
  1. 1 Photo
  2. 2 Scale
  3. 3 Size

It decides how the sizes look. Measure from your eyes in your seated position to the screen.

Choose a size

Sample photos to try it out:

Your photo stays on your device · A guide only, please measure before you buy (disclaimer)

How the TV visualizer works

  1. 01Take a photo of your wallIdeally straight on, from where you sit.
  2. 02Set the scaleDraw a line across a door, a picture or a sheet of paper and enter its length.
  3. 03Compare TV sizesTap a size, move the TV, see a comparison size as an outline and save it as an image.

TV sizes in cm and inches

Every size to scale, stacked. Screen dimensions without bezel, viewing distance for a balanced picture (1.4 to 2.3 × diagonal).

SizeWidth × heightViewing distanceView Details
24 inch⁦21 × 12″⁩2.8–4.6 ft→
27 inch⁦24 × 13″⁩3.1–5.2 ft→
32 inch⁦28 × 16″⁩3.7–6.1 ft→
40 inch⁦35 × 20″⁩4.7–7.7 ft→
42 inch⁦37 × 21″⁩4.9–8 ft→
43 inch⁦37 × 21″⁩5–8.2 ft→
45 inch⁦39 × 22″⁩5.2–8.6 ft→
48 inch⁦42 × 24″⁩5.6–9.2 ft→
49 inch⁦43 × 24″⁩5.7–9.4 ft→
50 inch⁦44 × 25″⁩5.8–9.6 ft→
55 inch⁦48 × 27″⁩6.4–10.5 ft→
58 inch⁦51 × 28″⁩6.8–11.1 ft→
60 inch⁦52 × 29″⁩7–11.5 ft→
65 inch⁦57 × 32″⁩7.6–12.5 ft→
70 inch⁦61 × 34″⁩8.2–13.4 ft→
75 inch⁦65 × 37″⁩8.8–14.4 ft→
77 inch⁦67 × 38″⁩9–14.8 ft→
80 inch⁦70 × 39″⁩9.3–15.3 ft→
83 inch⁦72 × 41″⁩9.7–15.9 ft→
85 inch⁦74 × 42″⁩9.9–16.3 ft→
86 inch⁦75 × 42″⁩10–16.5 ft→
90 inch⁦78 × 44″⁩10.5–17.3 ft→
98 inch⁦85 × 48″⁩11.4–18.8 ft→
100 inch⁦87 × 49″⁩11.7–19.2 ft→

Which size fits your viewing distance?

I sitaway55 inch

Open the viewing distance calculator →

Popular comparisons

55″ vs. 65″65″ vs. 75″65″ vs. 77″75″ vs. 85″50″ vs. 55″43″ vs. 50″

What size TV should I get?

A guide to the right TV size for your living room: viewing distance, room size, resolution and personal preference.

Updated: November 2026 · Based on THX, ITU-R BT.500 and a user test by Stiftung Warentest

The right viewing distance: the basic rule

Viewing distance is the most important factor when choosing a TV size. With 4K TVs, it is not sharpness that decides but how large you want the picture to look. It looks balanced from 1.4 to 2.3 × the diagonal; if you prefer it more subtle, sit further back, if you like it cinematic, move closer:

Subtle · 17–21° viewing angleDiagonal = distance ÷ 3 to ÷ 2.3Example 55 inch: 10.5–13.8 ft
Balanced · 21–35° viewing angleDiagonal = distance ÷ 2.3 to ÷ 1.4Example 55 inch: 6.4–10.5 ft
Cinematic · 35–47° viewing angleDiagonal = distance ÷ 1.4 to ÷ 1Example 55 inch: 4.6–6.4 ft

There is no single right distance, so we give ranges. The far end of “Balanced” is the average distance participants chose on their own in a user test by Stiftung Warentest (2026). Retailers often quote 1.2 ×: that is THX’s cinema value.

Popular TV sizes and the rooms they suit

This is how much TV suits typical living rooms for a balanced picture. For a cinematic picture it can be bigger, about 75 to 98 inches at 2.5 m (8 ft).

Room sizeTypical distanceSuitable size
up to 15 m² (160 sq ft)about 2 m (6.5 ft)40 to 55 inch
about 20 m² (215 sq ft)about 2.5 m (8 ft)43 to 70 inch
30 m² (320 sq ft) and up3 m (10 ft) and up55 to 83 inch

For a precise answer, use the room size calculator.

Resolution makes the difference

The higher the resolution, the closer you can sit without seeing individual pixels. That is why 4K makes big screens work in smaller rooms too. At common distances 8K adds practically no visible benefit, because the eye can no longer make out the individual pixels of 4K.

Full HD1.6 × diagonal
4K0.8 × diagonal
From this distance normal eyes can no longer see individual pixels (ITU-R BT.500-15). A shorter bar means you can sit closer.

Personal preference and use

  • Movies & gamingIf you want movies and games to feel big, pick the “Cinematic” style: 1 to 1.4 × the diagonal, around a 40° viewing angle (THX).
  • More distanceIf you prefer more distance, pick “Subtle”: 2.3 to 3 × the diagonal, around the 2.5 × Stiftung Warentest recommends. It also suits a TV that should stay in the background.
  • Bright roomsLots of daylight? A brighter TV holds up better.
  • Decide togetherIn Stiftung Warentest’s test, women wanted more distance than men on average (2.4 to 2.7 × instead of 2 ×). Best try the size together on your own wall.

Frequently asked questions about TV size

What TV size for 3 meter viewing distance?

At 3 meters (about 10 feet), TVs from 55 to 83 inches fit, and the picture looks balanced. The rule of thumb: viewing distance ÷ 2.3 to ÷ 1.4 = screen diagonal, so 300 cm ÷ 2.3 = 130 cm (≈ 51 inches) to 300 cm ÷ 1.4 = 214 cm (≈ 84 inches). For a cinematic picture (THX, 40° viewing angle), it is 85 inches and up. If the TV should stay in the background, 40 to 50 inches are enough.

Can a TV be too big?

A big TV is not harmful. But if you sit closer than about the screen diagonal (more than roughly 47° viewing angle), the picture is so wide that your eyes wander across it. Some people love exactly that, others find it too much over time. THX recommends about 40° for a cinematic picture. Sharpness is not the issue with 4K: normal eyes only see individual pixels below 0.8 × the diagonal. Often what matters more is how dominant the TV looks in the room, even when it is off.

What is better: 55 or 65 inches?

It mainly depends on your viewing distance. 55 inches look balanced from about 2 to 3.2 meters (6.5 to 10.5 ft), 65 inches from about 2.3 to 3.8 meters (7.5 to 12.5 ft). Between about 2.3 and 3.2 meters (7.5 and 10.5 ft) both fit, so it is a matter of taste: 65 inches are more impressive for movies and games, 55 inches stay more in the background. The best way to decide is to try both on a photo of your wall.

What TV size for 2.5 meter viewing distance?

At 2.5 meters (8 feet), 43 to 70 inches fit (250 cm ÷ 2.3 = 109 cm ≈ 43 inches to 250 cm ÷ 1.4 = 179 cm ≈ 70 inches), and the picture looks balanced. It looks cinematic with 75 to 98 inches and subtle with about 40 inches.

How do I calculate the right TV size?

Divide your viewing distance by two factors, depending on how present the TV should be:

Balanced (about 35° to 21° viewing angle): viewing distance ÷ 2.3 to ÷ 1.4
Example: 300 cm ÷ 2.3 = 130 cm (≈ 51 inches) to 300 cm ÷ 1.4 = 214 cm (≈ 84 inches), i.e. 55 to 83 inches

Cinematic (around 40°, THX): viewing distance ÷ 1.4 to ÷ 1
Example: 300 cm ÷ 1.2 = 250 cm (≈ 98 inches)

Subtle (around 20°, Stiftung Warentest): viewing distance ÷ 3 to ÷ 2.3
Example: 300 cm ÷ 2.5 = 120 cm (≈ 47 inches)

With 4K, sharpness sets no limit anywhere in this range; it is a matter of taste. Also consider the room, the wall width and how you use the TV.

Where do the viewing distance recommendations come from?

The THX cinema rule is: viewing distance = screen diagonal ÷ 0.835, i.e. about 1.2 × the diagonal and a 40° viewing angle. How much distance people actually prefer was tested by the German consumer organization Stiftung Warentest in 2026: men chose 2 × the diagonal on average, women 2.4 to 2.7 ×; as a compromise it recommends 2.5 ×. Our “Balanced” range runs from 1.4 × to 2.3 ×: the far end is the average of all participants, the near end lies between the THX value and the often quoted 30°. For normal eyes, sharpness sets no limit here: according to Recommendation ITU-R BT.500-15 of the International Telecommunication Union, pixels disappear from 1.6 × the diagonal with Full HD and from 0.8 × with 4K. The often quoted "30° SMPTE" comes from a withdrawn 1994 cinema guideline and describes the minimum for the back row of a movie theater.

Does room size matter?

Yes, room size influences how big a TV looks, even when it is off. What matters most, though, is the actual viewing distance: by our rule of thumb, in a 20 m² (215 sq ft) room you sit about 2.5 meters (8 ft) away, which suits about 43 to 70 inches for a balanced picture, or 75 inches and up for a cinematic one. Also consider brightness: in bright rooms with large windows, a brighter screen looks better.

Is there a difference between gaming and watching movies?

Yes. For games, many people like a bigger picture because it pulls you into the action more, so rather the "Cinematic" style (1 to 1.4 × the diagonal). For movies and shows it is a matter of taste. Also important for gaming: low input lag and 120 Hz, regardless of size.

How can I visualize a TV on my wall?

Take a photo of the wall, mark a known length such as a door frame or a sheet of paper and enter it. The TV visualizer then shows every size to scale on your wall. You can move the TV, compare sizes and save the result as an image.