TV Size Calculator
Don't guess. Calculate the perfect screen size for your room and viewing distance.
Slide to adjust distance from your couch to the TV wall.
Diagonal Screen Size
*Visual representation (not to scale)
The Science Behind TV Size and Distance
Choosing the right TV size isn't just about "bigger is better." It's about finding the perfect balance between immersion and comfort. Our calculator uses industry standards to ensure you get the best performance from your investment.
SMPTE Recommendation (30° Angle)
The Society of Motion Picture and Television Engineers (SMPTE) recommends a 30-degree viewing angle for general media consumption. This is ideal for news, sports, and casual TV watching where you want to see the whole screen comfortably without moving your eyes too much.
THX Recommendation (40° Angle)
For movies and gaming, THX recommends a wider 40-degree viewing angle. This creates a "theater-like" experience where the screen fills more of your field of vision, making the experience more immersive.
4K vs. 1080p: Why it Matters
Resolution dictates the "pixel density." On a 1080p screen, if you sit too close, you can see the grid of pixels. On a 4K Ultra HD screen, the pixels are four times smaller, allowing you to sit much closer without seeing the screen door effect. This is why 4K TVs allow for much larger screen sizes in smaller rooms.
Quick Reference Guide (4K TV)
| Viewing Distance | Mixed Usage (30°) | Immersive (40°) |
|---|---|---|
| 5 ft (1.5m) | 35" - 40" | 50" - 55" |
| 8 ft (2.4m) | 55" - 60" | 75" - 85" |
| 12 ft (3.6m) | 85" - 90" | Projector Recommended |
Frequently Asked Questions
- How is the ideal TV size calculated?
- The ideal TV size is calculated based on the viewing distance and the recommended field of view (FOV). SMPTE recommends a 30-degree field of view for mixed usage, while THX recommends a 40-degree field of view for a more immersive, cinema-like experience.
- What is the best viewing distance for a 65-inch 4K TV?
- For a 65-inch 4K TV, the recommended viewing distance is approximately 9 feet (2.7 meters) for mixed usage and 6.5 feet (2 meters) for a cinematic experience.
- Does resolution affect the recommended TV size?
- Yes, resolution affects how close you can sit to the screen. With higher resolutions like 4K and 8K, you can sit closer without seeing individual pixels, allowing for a larger screen and a more immersive experience.