The advertised TV size is the diagonal of the screen. Since almost all modern TVs use a 16:9 aspect ratio, you can calculate the width and height of the screen from the diagonal. The table below shows the screen area only. Add roughly 0.5–1" for the frame, and check your model's spec sheet for exact numbers, including the stand.
| TV size | Width | Height | Width (cm) | Height (cm) | Viewing distance** |
|---|---|---|---|---|---|
| 32" | 27.9" | 15.7" | 71 | 40 | 2.7–4.3 ft |
| 40" | 34.9" | 19.6" | 89 | 50 | 3.3–5.3 ft |
| 43" | 37.5" | 21.1" | 95 | 54 | 3.6–5.7 ft |
| 50" | 43.6" | 24.5" | 111 | 62 | 4.2–6.7 ft |
| 55" | 47.9" | 27.0" | 122 | 68 | 4.6–7.3 ft |
| 60" | 52.3" | 29.4" | 133 | 75 | 5.0–8.0 ft |
| 65" | 56.7" | 31.9" | 144 | 81 | 5.4–8.7 ft |
| 70" | 61.0" | 34.3" | 155 | 87 | 5.8–9.3 ft |
| 75" | 65.4" | 36.8" | 166 | 93 | 6.3–10.0 ft |
| 77" | 67.1" | 37.8" | 170 | 96 | 6.4–10.3 ft |
| 83" | 72.3" | 40.7" | 184 | 103 | 6.9–11.1 ft |
| 85" | 74.1" | 41.7" | 188 | 106 | 7.1–11.3 ft |
| 98" | 85.4" | 48.0" | 217 | 122 | 8.2–13.1 ft |
| 100" | 87.2" | 49.0" | 221 | 125 | 8.3–13.3 ft |
**Rule of thumb for 4K TVs: sit about 1.0–1.6× the screen diagonal away. For 1080p TVs, sit a little farther.
How to choose the right TV size
- Measure your seating distance, from your eyes to the wall where the TV will go.
- Divide by 1.0–1.6 to get a diagonal range. For example, 96" (8 ft) ÷ 1.6 = 60", and 96" ÷ 1.0 = 96", so a 65"–85" TV works well.
- Measure the wall to make sure the TV width fits, leaving space for speakers or décor.
Will it fit on my wall?
For mounting, the width matters most when centering between windows, and the height matters for clearing a mantel or console. If you're unsure, use painter's tape to outline the TV width and height from the chart.
Popular sizes
See the details for the most popular size: 65-inch TV dimensions.
Frequently asked questions
How are TV sizes measured?
TV size is the diagonal length of the screen, from one corner to the opposite corner, not including the frame (bezel). A 65" TV has a 65" diagonal screen.
What size TV should I get for my room?
A common rule of thumb for 4K TVs is to sit about 1 to 1.6 times the screen diagonal away. For example, a 65" TV suits a viewing distance of roughly 5.5 to 8.5 feet.
How wide is a 75 inch TV?
A 75" 16:9 TV screen is about 65.4" (166 cm) wide and 36.8" (93 cm) tall, not counting the frame.