TV size comparison
A 65 inch 16:9 TV screen is 56.7 in wide and 31.9 in tall, and a 75 inch screen has about 33% more area. Put sizes side by side to see width, height, area and how far away to sit.
TV size comparison: the tool
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Screens drawn to scale from the front, standing on the same line, with a 5 ft 9 in person for scale. Screen only: the TV body adds its frame.
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TV size chart: screen width, height and viewing distance
| Size | Screen (inches) | Screen (cm) | THX 40 degree distance | 30 degree distance |
|---|---|---|---|---|
| 24 in | 20.9 x 11.8 in | 53.1 x 29.9 cm | 2.4 ft (0.7 m) | 3.3 ft (1.0 m) |
| 32 in | 27.9 x 15.7 in | 70.8 x 39.8 cm | 3.2 ft (1.0 m) | 4.3 ft (1.3 m) |
| 40 in | 34.9 x 19.6 in | 88.6 x 49.8 cm | 4.0 ft (1.2 m) | 5.4 ft (1.7 m) |
| 43 in | 37.5 x 21.1 in | 95.2 x 53.5 cm | 4.3 ft (1.3 m) | 5.8 ft (1.8 m) |
| 50 in | 43.6 x 24.5 in | 110.7 x 62.3 cm | 5.0 ft (1.5 m) | 6.8 ft (2.1 m) |
| 55 in | 47.9 x 27.0 in | 121.8 x 68.5 cm | 5.5 ft (1.7 m) | 7.5 ft (2.3 m) |
| 65 in | 56.7 x 31.9 in | 143.9 x 80.9 cm | 6.5 ft (2.0 m) | 8.8 ft (2.7 m) |
| 70 in | 61.0 x 34.3 in | 155.0 x 87.2 cm | 7.0 ft (2.1 m) | 9.5 ft (2.9 m) |
| 75 in | 65.4 x 36.8 in | 166.0 x 93.4 cm | 7.5 ft (2.3 m) | 10.2 ft (3.1 m) |
| 77 in | 67.1 x 37.8 in | 170.5 x 95.9 cm | 7.7 ft (2.3 m) | 10.4 ft (3.2 m) |
| 83 in | 72.3 x 40.7 in | 183.7 x 103.4 cm | 8.3 ft (2.5 m) | 11.2 ft (3.4 m) |
| 85 in | 74.1 x 41.7 in | 188.2 x 105.8 cm | 8.5 ft (2.6 m) | 11.5 ft (3.5 m) |
| 98 in | 85.4 x 48.0 in | 217.0 x 122.0 cm | 9.8 ft (3.0 m) | 13.3 ft (4.0 m) |
| 100 in | 87.2 x 49.0 in | 221.4 x 124.5 cm | 10.0 ft (3.0 m) | 13.6 ft (4.1 m) |
THX viewing range
| Screen | Closest | Farthest |
|---|---|---|
| 35 in | 3.5 ft (1.0 m) | 5.0 ft (1.5 m) |
| 40 in | 4.0 ft (1.2 m) | 6.0 ft (1.8 m) |
| 50 in | 5 ft (1.5 m) | 7.5 ft (2.2 m) |
| 60 in | 6.0 ft (1.8 m) | 9.0 ft (2.7 m) |
How TV sizes work
- Screen size is the diagonal of the visible picture. Width and height follow from geometry and the aspect ratio.
- For 16:9, the diagonal of a 16 x 9 rectangle is sqrt(256 + 81) = sqrt(337), so width = diagonal x 16/sqrt(337) (about 0.8716) and height = diagonal x 9/sqrt(337) (about 0.4903). This is the general formula below with AR = 16/9.
- Viewing distance has no single standard. THX recommends about a 40 degree view angle (distance = diagonal / 0.84, about 1.2 x diagonal for 1080p) and gives a range out to about 28 degrees.
- The '30 degree SMPTE' figure (about 1.6 x diagonal for 16:9) is widely quoted, but Wikipedia notes there seems to be no direct recommendation from SMPTE itself. Recorded as a common rule, not an SMPTE standard.
- The '2.5 x diagonal' rule (about 20 degrees) is a manufacturer and retailer rule of thumb; CNET suggested 1.5 x diagonal for high-resolution content.
Related tools
Just bought a TV? Dead pixel test for a new TV.
Questions
How wide is a 65 inch TV?
The screen of a 16:9 65 inch TV is 56.7 in wide and 31.9 in tall (143.9 x 80.9 cm). The TV itself is a little bigger because of the frame.
How far should I sit from a 65 inch TV?
About 6.5 ft (2.0 m) for the 40 degree view THX recommends, or about 8.8 ft (2.7 m) for the common 30 degree rule.
How much bigger is a 75 inch TV than a 65 inch?
The screen area is about 33% bigger (75 squared over 65 squared), even though the diagonal is only 15% longer.
Sources
- Omni Calculator: Screen Size Calculator (checked 2026-10-02)
- AVHelpZone: Display Calculations (checked 2026-10-02)
- Wikipedia: Optimum HDTV viewing distance (checked 2026-10-02)
Last checked: 5 October 2026