27-inch screen dimensions
23.5 × 13.2 inches
59.8 × 33.6 cm · 598 × 336 mm · 16:9 · Monitor 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 27-inch measurement produces a screen 4.4 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 | 23.5 in / 59.8 cm | 13.2 in / 33.6 cm | 312 in² |
| 16:10 — taller than widescreen, common on laptops and design monitors | 22.9 in / 58.2 cm | 14.3 in / 36.3 cm | 328 in² |
| 21:9 — the 34-inch class ultrawide, actually 43:18 | 24.9 in / 63.3 cm | 10.4 in / 26.5 cm | 260 in² |
| 4:3 — the pre-widescreen shape, still used by projectors and older panels | 21.6 in / 54.9 cm | 16.2 in / 41.1 cm | 350 in² |
| 32:9 — two 16:9 panels side by side in one screen | 26.0 in / 66.0 cm | 7.3 in / 18.6 cm | 190 in² |
How it compares by area
A diagonal is a length, so a step up sounds smaller than it is: moving from 25 inches to 27 adds 2.0 inches of diagonal and 17% more picture, and the next size up, 29 inches, is another 15% again.
| Size | Width | Screen area | vs 27-inch |
|---|---|---|---|
| 19 in | 16.6 in | 154 in² | -50% |
| 21.5 in | 18.7 in | 198 in² | -37% |
| 22 in | 19.2 in | 207 in² | -34% |
| 24 in | 20.9 in | 246 in² | -21% |
| 25 in | 21.8 in | 267 in² | -14% |
| 29 in | 25.3 in | 359 in² | +15% |
| 32 in | 27.9 in | 438 in² | +40% |
| 34 in | 29.6 in | 494 in² | +59% |
Pixel density at 27-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 27-inch | |
|---|---|---|
| Full HD (1920×1080) | 82 PPI | Fine across a room, coarse up close |
| QHD (2560×1440) | 109 PPI | Comfortable at desk distance |
| 4K UHD (3840×2160) | 163 PPI | Sharp at desk distance |
| 8K UHD (7680×4320) | 326 PPI | Very high — the interface will be scaled |
Frequently asked questions
How wide is a 27-inch screen?
A 27-inch 16:9 screen is 23.5 inches (59.8 cm) wide and 13.2 inches (33.6 cm) tall. The diagonal alone does not fix the width — a 27-inch 4:3 screen is 21.6 inches wide instead.
What are the dimensions of a 27-inch TV in cm?
59.8 × 33.6 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 27-inch screen much bigger than a 25-inch one?
By area, 17% bigger. Screens are sold by diagonal, which understates every step: going up 2.0 inches of diagonal here adds 17% of picture.
What resolution should a 27-inch screen be?
Pixel density decides that: Full HD gives 82 PPI, QHD gives 109 PPI, 4K UHD gives 163 PPI, 8K UHD gives 326 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.