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

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, minimum distance for 4K.

SizeWidth × heightDistance fromvisualize
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→
48 inch⁦42 × 24″⁩6 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→
83 inch⁦72 × 41″⁩10.4 ft→
85 inch⁦74 × 42″⁩10.6 ft→
86 inch⁦75 × 42″⁩10.8 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 the THX recommendation and the common 30° rule of thumb

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 for every current model from 43 inches up – there are two established recommendations:

Everyday viewing · 30° 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 the 30° value is easier on the eyes. Movie fans often prefer the more immersive 40° value. Older Full HD sets need a factor of 2.0 – but they are hardly sold above 43 inches any more.

Popular TV sizes and the rooms they suit

55 inches has long been one of the best-selling sizes, and 65 inches is the new normal. 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)55–65 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.

Full HD2.5 × diagonal
4K1.5 × diagonal
8K1.2 × diagonal
Recommended minimum distance – 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 26 to 30° viewing angle is more relaxed for long evenings.
  • 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 30° formula for daily viewing (viewing distance ÷ 1.5 = screen diagonal): 300 cm ÷ 1.5 = 200 cm, which equals about 75-77 inches. For an immersive cinema experience using the THX standard with 40° viewing angle (300 cm ÷ 1.2 = 250 cm), 85-98 inches would be optimal. A 75-incher offers comfortable viewing at 3m distance, while 85 inches creates a very immersive experience.

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. SMPTE recommends a maximum of 40 degrees viewing angle. 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 1.6 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 30° formula: 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, 75-85 inches would be ideal (250 cm ÷ 1.2 = 208 cm ≈ 75-77 inches). A 65-incher offers comfortable viewing at 2.5m, while 75 inches creates an impressive cinema experience.

How do I calculate the ideal TV size?

For 4K TVs (all modern TVs 43" and larger), there are two recommendations:

Daily Viewing (30° Viewing Angle): Viewing distance ÷ 1.5
Example: 300 cm ÷ 1.5 = 200 cm (≈ 75-77 inches)

Immersive Cinema Experience (40° Viewing Angle, THX): Viewing distance ÷ 1.2
Example: 300 cm ÷ 1.2 = 250 cm (≈ 95 inches)

For everyday use, the 30° value (1.5×) is recommended, for movie enthusiasts the THX value (1.2×). For older Full HD devices: viewing distance ÷ 2.0. The actual choice should also consider room size, personal preference, and usage type.

Where do the 30° and 40° viewing angle recommendations come from?

The 30° viewing angle (viewing distance = 1.5× screen diagonal) has established itself as a de facto standard for comfortable, daily TV viewing. While often associated with SMPTE (Society of Motion Picture and Television Engineers), this value primarily originates from the home theater community and professional home cinema design literature. The 40° viewing angle (1.2× diagonal) is the official THX standard, developed by Lucasfilm. THX recommends this value for maximum cinema experience with optimal immersion. Both recommendations are based on professional cinema standards and have proven effective in home theater applications.

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 35 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 standard distance of 1.5-2.0× 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.