70-inch screen dimensions
61.0 × 34.3 inches
155.0 × 87.2 cm · 1550 × 872 mm · 16:9 · Television size
Why the diagonal is not enough
Screens are advertised by their diagonal, and a diagonal does not determine width until you also know the shape. The same 70-inch measurement produces a screen 11.4 inches wider at 32:9 than at 4:3. If you are measuring a space, the width is the number that matters.
| Aspect ratio | Width | Height | Screen area |
|---|---|---|---|
| 16:9 — the standard for televisions and most monitors | 61.0 in / 155.0 cm | 34.3 in / 87.2 cm | 2094 in² |
| 16:10 — taller than widescreen, common on laptops and design monitors | 59.4 in / 150.8 cm | 37.1 in / 94.2 cm | 2202 in² |
| 21:9 — the 34-inch class ultrawide, actually 43:18 | 64.6 in / 164.0 cm | 27.0 in / 68.7 cm | 1745 in² |
| 4:3 — the pre-widescreen shape, still used by projectors and older panels | 56.0 in / 142.2 cm | 42.0 in / 106.7 cm | 2352 in² |
| 32:9 — two 16:9 panels side by side in one screen | 67.4 in / 171.2 cm | 19.0 in / 48.1 cm | 1277 in² |
How it compares by area
A diagonal is a length, so a step up sounds smaller than it is: moving from 65 inches to 70 adds 5.0 inches of diagonal and 16% more picture, and the next size up, 75 inches, is another 15% again.
| Size | Width | Screen area | vs 70-inch |
|---|---|---|---|
| 50 in | 43.6 in | 1068 in² | -49% |
| 55 in | 47.9 in | 1293 in² | -38% |
| 60 in | 52.3 in | 1538 in² | -27% |
| 65 in | 56.7 in | 1805 in² | -14% |
| 75 in | 65.4 in | 2404 in² | +15% |
| 77 in | 67.1 in | 2533 in² | +21% |
| 83 in | 72.3 in | 2944 in² | +41% |
| 85 in | 74.1 in | 3087 in² | +47% |
Pixel density at 70-inch
The same resolution is sharp on a small screen and coarse on a large one, because sharpness is pixels per inch and the inches are not in the resolution.
| Resolution | Density at 70-inch | |
|---|---|---|
| Full HD (1920×1080) | 31 PPI | Television distance only |
| QHD (2560×1440) | 42 PPI | Television distance only |
| 4K UHD (3840×2160) | 63 PPI | Fine across a room, coarse up close |
| 8K UHD (7680×4320) | 126 PPI | Comfortable at desk distance |
Frequently asked questions
How wide is a 70-inch screen?
A 70-inch 16:9 screen is 61.0 inches (155.0 cm) wide and 34.3 inches (87.2 cm) tall. The diagonal alone does not fix the width — a 70-inch 4:3 screen is 56.0 inches wide instead.
What are the dimensions of a 70-inch TV in cm?
155.0 × 87.2 cm for the screen itself at 16:9. The cabinet is larger — usually 1 to 3 cm on each side for a modern set, more if it has a bezel — so measure the product rather than the panel when checking whether it fits a space.
Is a 70-inch screen much bigger than a 65-inch one?
By area, 16% bigger. Screens are sold by diagonal, which understates every step: going up 5.0 inches of diagonal here adds 16% of picture.
What resolution should a 70-inch screen be?
Pixel density decides that: Full HD gives 31 PPI, QHD gives 42 PPI, 4K UHD gives 63 PPI, 8K UHD gives 126 PPI. Below about 80 PPI a screen looks coarse at desk distance but is fine across a room, which is why televisions and monitors of the same size are sold at different resolutions.