TV Screen Size Calculator
Calculate TV dimensions and get viewing distance recommendations based on THX and SMPTE standards.
TV Calculator
Select a TV size or enter your own.
Popular TV Sizes
Custom
Results
Width
—
Height
—
Area
—
PPI
—
Recommended Viewing Distance
—
Based on THX and SMPTE standards
Quick Answer: Popular 16:9 TV Dimensions
Standard 16:9 4K TV dimensions, physical screen surface, and optimal seating distance:
- 55" TV: 47.9″ × 27.0″ (121.8 × 68.5 cm) | Seating: 4.6–6.9 ft (1.4–2.1 m)
- 65" TV: 56.7″ × 31.9″ (144.0 × 81.0 cm) | Seating: 5.4–8.1 ft (1.6–2.5 m)
- 75" TV: 65.4″ × 36.8″ (166.1 × 93.4 cm) | Seating: 6.3–9.4 ft (1.9–2.9 m)
- 85" TV: 74.1″ × 41.7″ (188.2 × 105.9 cm) | Seating: 7.1–10.6 ft (2.2–3.2 m)
TV Size & Distance Guide
| Size | Width (in / cm) | Height (in / cm) | 4K Seating Range |
|---|---|---|---|
| 43" | 37.5" (95.2 cm) | 21.1" (53.5 cm) | 43.0–64.5 ft (1.1–1.6 m) |
| 50" | 43.6" (110.7 cm) | 24.5" (62.3 cm) | 50.0–75.0 ft (1.3–1.9 m) |
| 55" | 47.9" (121.8 cm) | 27.0" (68.5 cm) | 55.0–82.5 ft (1.4–2.1 m) |
| 65" | 56.7" (143.9 cm) | 31.9" (80.9 cm) | 65.0–97.5 ft (1.7–2.5 m) |
| 75" | 65.4" (166.0 cm) | 36.8" (93.4 cm) | 75.0–112.5 ft (1.9–2.9 m) |
| 85" | 74.1" (188.2 cm) | 41.7" (105.8 cm) | 85.0–127.5 ft (2.2–3.2 m) |
Choosing the Right TV Size
Living room (8–12 ft): 55" to 75" is ideal for most living rooms. At 10 feet, a 65" 4K TV fills your field of view comfortably.
Bedroom (5–8 ft): 43" to 55" works well. The shorter viewing distance means you don't need as large a screen.
4K vs 1080p: With 4K, you can sit closer without seeing pixels, allowing a larger TV for the same room. 4K is worth it for any screen 50" and above.
THX standard: THX recommends a 36° viewing angle for cinema immersion. SMPTE suggests 30°. Our calculator combines both to provide an optimal seating range.
Frequently Asked Questions
How far should I sit from my TV?
For a 4K TV, multiply the screen size by 1.0 to 1.5 to get the viewing distance in feet. For a 55" 4K TV, sit 4.5–7 feet away. For 1080p TVs, multiply by 1.5 to 2.5. These ranges balance immersive field of view with comfortable eye movement.
What size TV for a 10 foot room?
For a 10-foot (3.0 m) viewing distance with a 4K TV, a 65" to 75" TV is ideal. The THX standard (36° field of view) recommends a 65" screen, while the SMPTE standard (30°) accommodates up to a 75" screen.
What are the dimensions of a 55-inch TV in cm and inches?
A standard 55-inch 16:9 TV measures 47.9 inches (121.8 cm) wide by 27.0 inches (68.5 cm) high, with a total surface area of 1,293 sq in (8,344 cm²). The recommended viewing distance is 4.6–6.9 feet (1.4–2.1 meters).
What are the dimensions of a 65-inch TV in cm and inches?
A standard 65-inch 16:9 TV measures 56.7 inches (144.0 cm) wide by 31.9 inches (81.0 cm) high, with a total display area of 1,809 sq in (11,664 cm²). The recommended 4K viewing distance is 5.4–8.1 feet (1.6–2.5 meters).
What are the dimensions of a 75-inch TV in cm and inches?
A standard 75-inch 16:9 TV measures 65.4 inches (166.1 cm) wide by 36.8 inches (93.4 cm) high, providing 2,407 sq in (15,516 cm²) of screen real estate. Ideal seating distance is 6.3–9.4 feet (1.9–2.9 meters).