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

The recommendations are based on it. 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 the next 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, recommended everyday viewing distance (4K).

SizeWidth × heightViewing distanceView Details
24 inch⁦21 × 12″⁩3 ft→
27 inch⁦24 × 13″⁩3.4 ft→
32 inch⁦28 × 16″⁩4 ft→
40 inch⁦35 × 20″⁩5 ft→
42 inch⁦37 × 21″⁩5.2 ft→
43 inch⁦37 × 21″⁩5.4 ft→
45 inch⁦39 × 22″⁩5.6 ft→
48 inch⁦42 × 24″⁩6 ft→
49 inch⁦43 × 24″⁩6.1 ft→
50 inch⁦44 × 25″⁩6.3 ft→
55 inch⁦48 × 27″⁩6.9 ft→
58 inch⁦51 × 28″⁩7.3 ft→
60 inch⁦52 × 29″⁩7.5 ft→
65 inch⁦57 × 32″⁩8.1 ft→
70 inch⁦61 × 34″⁩8.8 ft→
75 inch⁦65 × 37″⁩9.4 ft→
77 inch⁦67 × 38″⁩9.6 ft→
80 inch⁦70 × 39″⁩10 ft→
83 inch⁦72 × 41″⁩10.4 ft→
85 inch⁦74 × 42″⁩10.6 ft→
86 inch⁦75 × 42″⁩10.8 ft→
90 inch⁦78 × 44″⁩11.3 ft→
98 inch⁦85 × 48″⁩12.2 ft→
100 inch⁦87 × 49″⁩12.5 ft→

Which size fits your viewing distance?

I sitaway65 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.2022 and a user test by Stiftung Warentest

The ideal viewing distance: the basic rule

Viewing distance is the most important factor when choosing a TV size. For modern 4K TVs (the standard on almost every model from 43 inches up) there are two established recommendations:

Everyday viewing · about 32° viewing angleDistance ÷ 1.5 = diagonalExample 55 inch: 6.9 ft (5.8–7.9 ft)
Cinema experience · 40° viewing angle (THX)Distance ÷ 1.2 = diagonalExample 55 inch: 5.5 ft (4.7–6.3 ft)

For everyday viewing 1.5 × the diagonal is easier on the eyes. Movie fans often prefer the more immersive THX distance. If you like more distance, up to 2.5 × is fine too, according to a user test by Stiftung Warentest (2026).

Popular TV sizes and the rooms they suit

55 and 65 inches are among the best-selling sizes. For large living rooms with almost 3 m (10 ft) of viewing distance, 75 to 85 inches is the better choice.

Room sizeTypical distanceSuitable size
up to 15 m² (160 sq ft)about 2 m (6.5 ft)50–55 inch
about 20 m² (215 sq ft)about 2.5 m (8 ft)65–70 inch
30 m² (320 sq ft) and up3 m (10 ft) and up75–85 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.2022). A shorter bar means you can sit closer.

Personal preference and use

  • Movies & gamingOne size up feels more immersive. THX recommends a 40° viewing angle.
  • News & everyday TVA viewing angle of about 32° (1.5 × diagonal) is easier on the eyes for long evenings. Sitting further back is fine too.
  • Bright roomsLots of daylight? Bigger, brighter TVs hold up better.
  • When in doubt, go biggerMost people regret buying too small, rarely the other way round.

Frequently asked questions about TV size

What TV size for 3 meter viewing distance?

At 3 meters viewing distance, a screen diagonal of 75-85 inches is ideal for 4K TVs. According to the everyday rule (viewing distance ÷ 1.5 = screen diagonal, about 32° viewing angle): 300 cm ÷ 1.5 = 200 cm, which equals about 79 inches, i.e. an 80-inch TV. For an immersive cinema experience using the THX standard with 40° viewing angle (300 cm ÷ 1.2 = 250 cm), about 98 inches would be optimal. A 75-incher offers comfortable viewing at 3 m, while 85 inches already looks noticeably bigger.

Can a TV be too big?

Yes, a TV can subjectively seem too large if the viewing distance is too short. At too short a distance, you need to move your head to capture the entire image, which is tiring during longer viewing sessions. THX recommends about 40 degrees for a cinema feel; sitting closer than about the screen diagonal (roughly 47 degrees) gets tiring over time. However, with modern 4K/8K TVs, pixel density is so high that "too big" in terms of image quality is hardly an issue anymore. It's primarily about comfort.

What is better: 55 or 65 inches?

The decision between 55 and 65 inch TVs mainly depends on viewing distance. 55 inches is perfect for 2.1 meters distance (daily) or 1.7 meters (immersive) and small to medium-sized living rooms. 65 inches is ideal for 2.5 meters (daily) or 2.0 meters (immersive) and offers a significantly more impressive experience, especially for movies and gaming. If space and budget allow, experts tend to recommend the larger TV variant. Most people regret not buying bigger, rarely the opposite.

What TV size for 2.5 meter viewing distance?

At 2.5 meters viewing distance, a 65 inch TV is optimal for daily viewing. According to the everyday rule: 250 cm ÷ 1.5 = 167 cm screen diagonal, which equals about 65 inches. For a more immersive cinema experience using THX with 40° viewing angle, 80-85 inches would be ideal (250 cm ÷ 1.2 = 208 cm ≈ 82 inches). A 65-incher offers comfortable viewing at 2.5 m, while 80 to 85 inches create an impressive cinema experience.

How do I calculate the ideal TV size?

For 4K TVs (almost every TV 43" and larger), there are two recommendations:

Daily Viewing (about 32° Viewing Angle): Viewing distance ÷ 1.5
Example: 300 cm ÷ 1.5 = 200 cm (≈ 79 inches, i.e. 80 inches)

Immersive Cinema Experience (40° Viewing Angle, THX): Viewing distance ÷ 1.2
Example: 300 cm ÷ 1.2 = 250 cm (≈ 98 inches)

For everyday use, 1.5× is recommended, for movie enthusiasts the THX value (1.2×). If you prefer more distance, up to 2.5× is fine according to a user test by Stiftung Warentest. For Full HD devices: viewing distance ÷ 1.6. The actual choice should also consider room size, personal preference, and usage type.

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. The everyday rule of 1.5 × the diagonal gives about 32°: the viewing angle Full HD was designed for (Recommendation ITU-R BT.2022 of the International Telecommunication Union), and from about there the pixels of Full HD blend together. The often quoted "30° SMPTE" comes from a withdrawn 1994 cinema guideline and describes the minimum for the back row of a movie theater. How much distance people actually prefer was tested by the German consumer organization Stiftung Warentest in 2026: 2 to 2.7 × the diagonal, 2.5 × as a compromise.

Does room size matter?

Yes, room size significantly influences the perception of TV size. In a 15 m² room, a 65-inch TV appears dominant, while it looks proportional in a 20 m² room. However, more important than absolute room size is the actual viewing distance to the TV. Also consider room brightness: large windows and bright rooms benefit from larger screens with higher brightness (at least 400-600 nits).

Is there a difference between gaming and watching movies?

Yes, for gaming, many prefer a slightly larger TV at the same distance, as the immersive effect enhances the gaming experience. Esports professionals often sit closer to the screen (1.0-1.2× diagonal) for better reaction times and overview. For movies and series, the everyday distance of about 1.5× the diagonal is more comfortable for longer viewing sessions. Important for gaming: Look for low input lag values (under 20ms) and high refresh rates (120Hz), regardless of TV 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.