TV Size Calculator
Find the perfect TV size based on your viewing distance. Get science-backed recommendations using THX and SMPTE standards.
3 feet20 feet
Typical for:
living room or den
Quick Reference Chart
| Distance | Recommended Size | Room Type | |
|---|---|---|---|
| 5 feet | 40" | Bedroom | View guide → |
| 7 feet | 56" | Small Living Room | View guide → |
| 9 feet | 72" | Living Room | View guide → |
| 11 feet | 88" | Large Living Room | View guide → |
| 14 feet | 112" | Home Theater | View guide → |
How the Formula Works
1
Convert distance to inches
Multiply feet by 12, or meters by 39.37
2
Divide by 1.5
This gives the ideal diagonal screen size for 4K content
3
Consider the range
Divide by 2 for minimum size, by 1.2 for maximum immersive size
Based on: THX and SMPTE viewing angle recommendations for 4K Ultra HD displays, targeting a 30-40° viewing angle for optimal immersion.