Screen Size Calculator
Estimate a TV size range from your main seating distance.
30 deg relaxed
66 in
36 deg cinematic
81 in
40 deg immersive
90 in
Mixed use
Choose the 30 degree result when the room is used for sports, news, casual TV, or guests who prefer a smaller image.
Movie balance
The mid-30 degree result is a strong default for a living room theater because it feels cinematic without forcing eye movement.
Immersion limit
The 40 degree result is exciting for movie-first setups, but check subtitles, gaming HUDs, and low-resolution sources before buying.
When this tool is useful
Use this before buying a display so the screen size fits your real seating distance, field of view, subtitles, games, and room lighting.
Before you use it
- Measure from seated eyes to the screen plane.
- Decide whether the room is movie-first or mixed-use.
- Check wall width and furniture clearance.
After you get a result
- Mock the screen outline.
- Check bottom-edge clearance.
- Choose comfort over the largest possible diagonal.
How to use the result
Treat these numbers as a strong starting point, then adjust for furniture, doors, windows, and how the room actually sounds. The goal is a system that is comfortable every night, not a perfect diagram that no one wants to live with.
Beginner guardrails
- Measure from the main seat, not from the back wall.
- Keep speakers aimed at ear height when possible.
- Leave room for cables, ventilation, and safe walking paths.