15.6-inch screen dimensions
13.6 × 7.6 inches
34.5 × 19.4 cm · 345 × 194 mm · 16:9 · Laptop 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 15.6-inch measurement produces a screen 2.5 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 | 13.6 in / 34.5 cm | 7.6 in / 19.4 cm | 104 in² |
| 16:10 — taller than widescreen, common on laptops and design monitors | 13.2 in / 33.6 cm | 8.3 in / 21.0 cm | 109 in² |
| 21:9 — the 34-inch class ultrawide, actually 43:18 | 14.4 in / 36.6 cm | 6.0 in / 15.3 cm | 87 in² |
| 4:3 — the pre-widescreen shape, still used by projectors and older panels | 12.5 in / 31.7 cm | 9.4 in / 23.8 cm | 117 in² |
| 32:9 — two 16:9 panels side by side in one screen | 15.0 in / 38.1 cm | 4.2 in / 10.7 cm | 63 in² |
How it compares by area
A diagonal is a length, so a step up sounds smaller than it is: moving from 14 inches to 15.6 adds 1.6 inches of diagonal and 24% more picture, and the next size up, 16 inches, is another 5% again.
| Size | Width | Screen area | vs 15.6-inch |
|---|---|---|---|
| 13.3 in | 11.6 in | 76 in² | -27% |
| 14 in | 12.2 in | 84 in² | -19% |
| 16 in | 13.9 in | 109 in² | +5% |
| 17 in | 14.8 in | 123 in² | +19% |
| 19 in | 16.6 in | 154 in² | +48% |
| 21.5 in | 18.7 in | 198 in² | +90% |
| 22 in | 19.2 in | 207 in² | +99% |
| 24 in | 20.9 in | 246 in² | +137% |
Pixel density at 15.6-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 15.6-inch | |
|---|---|---|
| Full HD (1920×1080) | 141 PPI | Sharp at desk distance |
| QHD (2560×1440) | 188 PPI | Sharp at desk distance |
| 4K UHD (3840×2160) | 282 PPI | Very high — the interface will be scaled |
| 8K UHD (7680×4320) | 565 PPI | Very high — the interface will be scaled |
Frequently asked questions
How wide is a 15.6-inch screen?
A 15.6-inch 16:9 screen is 13.6 inches (34.5 cm) wide and 7.6 inches (19.4 cm) tall. The diagonal alone does not fix the width — a 15.6-inch 4:3 screen is 12.5 inches wide instead.
What are the dimensions of a 15.6-inch TV in cm?
34.5 × 19.4 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 15.6-inch screen much bigger than a 14-inch one?
By area, 24% bigger. Screens are sold by diagonal, which understates every step: going up 1.6 inches of diagonal here adds 24% of picture.
What resolution should a 15.6-inch screen be?
Pixel density decides that: Full HD gives 141 PPI, QHD gives 188 PPI, 4K UHD gives 282 PPI, 8K UHD gives 565 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.