TV Size Calculator
Find the perfect TV size and optimal viewing distance for your room
TV Size & Distance Calculator
Measured diagonally from corner to corner
Higher resolution allows closer viewing distances
Recommended: 30-40° for optimal viewing experience
Results
Summary: For a 55" 1080p (Full HD) TV, sit 7.5 ft away for optimal viewing with a 30° viewing angle.
Recommendations
TV Size & Distance Formulas
Optimal Distance Formula
TVD: TV Distance (optimal viewing distance)
W: Screen Width
θ: Viewing Angle
Screen Dimensions (16:9 Aspect Ratio)
Width: Diagonal × 16 ÷ √(16² + 9²)
Height: Diagonal × 9 ÷ √(16² + 9²)
Factor: √337 ≈ 18.358
Minimal Distance (Resolution-Based)
Assumption: 60 pixels per degree for optimal quality
Angle: Horizontal Pixels ÷ 60
Distance: W ÷ (2 × tan(angle/2))
Resolution Guide
480p (SD)
853 × 480 pixels
Basic quality, larger distances needed
720p (HD)
1280 × 720 pixels
Good for smaller screens
1080p (Full HD)
1920 × 1080 pixels
Standard for most content
4K (Ultra HD)
3840 × 2160 pixels
Allows closer viewing distances
8K
7680 × 4320 pixels
Future-proof, very close viewing
Viewing Angle Guide
20-25°
Conservative, cinema-like experience
30°
THX recommended standard
35-40°
Immersive viewing experience
45°+
May cause eye strain
Understanding TV Size and Viewing Distance
Why Size and Distance Matter
- •Visual Comfort: Proper sizing prevents eye strain and neck fatigue
- •Immersion: Optimal viewing angle enhances entertainment experience
- •Picture Quality: Resolution determines how close you can sit
- •Room Aesthetics: Proper proportions improve room design
Viewing Distance Factors
- •Room size and seating arrangement
- •Content type (movies, sports, gaming)
- •Personal preference for immersion level
- •Lighting conditions in the room
Screen Size Guidelines
- 32-43": Small rooms, bedrooms, kitchens
- 50-55": Medium living rooms (8-12 ft viewing)
- 65-75": Large living rooms (12-16 ft viewing)
- 85"+: Home theaters (16+ ft viewing)
Resolution Impact
- •Higher Resolution: Allows closer viewing without pixelation
- •4K Content: Enables immersive large screen experience
- •8K Future: Will allow even larger screens at same distance
- •Content Matching: Consider your typical viewing content