3840x1080 resolution
3840 × 1080
DFHD · 32:9 · 4,147,200 pixels · 4.15 megapixels · Ultrawide
What 3840x1080 is
Two 1080p displays side by side in one panel, a 32:9 super-ultrawide. Window management matters more than pixel count at this shape — almost nothing is designed to be read across 3840 unbroken columns.
The numbers
| Width | 3,840 px |
| Height | 1,080 px |
| Aspect ratio | 32:9 |
| Total pixels | 4,147,200 |
| Megapixels | 4.15 MP |
| Compared with 1080p | 2.00× the pixels |
| Compared with 4K UHD | 0.50× the pixels |
What 3840x1080 costs to move and to store
A frame is width × height × three bytes of colour, before any compression touches it. At 3840 × 1080 that is 12.44 MB per frame, and video is frames per second:
| Frame rate | Uncompressed | An hour of it |
|---|---|---|
| 24 fps | 299 MB/s | 1.07 TB |
| 30 fps | 373 MB/s | 1.34 TB |
| 60 fps | 746 MB/s | 2.69 TB |
| 120 fps | 1.49 GB/s | 5.37 TB |
Nobody ships that. It is the number codecs exist to get away from — a streamed 3840x1080 feed runs at a few tens of megabits, which is a compression ratio of several hundred to one, and it is why a still frame from a stream looks worse than a photograph of the same scene.
How close you have to sit for 3840x1080 to be worth it
The eye resolves about one arcminute of detail. Past a certain distance the pixels merge whatever the panel does, and a higher resolution stops being visible rather than stopping being better. That distance is the pixel pitch divided by the tangent of one arcminute:
| Screen | Pixels merge beyond |
|---|---|
| 13.3 in monitor or laptop | 0.29 m (1 ft) |
| 15.6 in monitor or laptop | 0.34 m (1.1 ft) |
| 24 in monitor or laptop | 0.53 m (1.7 ft) |
| 27 in monitor or laptop | 0.59 m (1.9 ft) |
| 32 in monitor or laptop | 0.7 m (2.3 ft) |
| 43 in television | 0.94 m (3.1 ft) |
| 55 in television | 1.2 m (3.9 ft) |
| 65 in television | 1.42 m (4.7 ft) |
| 75 in television | 1.64 m (5.4 ft) |
Sitting further back than the figure for your screen, 3840x1080 and the next resolution down look the same. That is the whole argument about 4K televisions in ordinary living rooms: the resolution is real and the seating position usually is not close enough to show it.
Pixel density at common screen sizes
A resolution on its own says nothing about sharpness — the same 3840x1080 panel is dense on a laptop and coarse on a television. Density is the diagonal in pixels divided by the diagonal in inches.
| Diagonal | Pixel density | |
|---|---|---|
| 13.3 in | 300 PPI | High density — the OS will scale the interface |
| 15.6 in | 256 PPI | High density — the OS will scale the interface |
| 24 in | 166 PPI | Sharp |
| 27 in | 148 PPI | Sharp |
| 32 in | 125 PPI | Comfortable at native size |
Other ultrawide resolutions
| Resolution | Name | Ratio | Megapixels |
|---|---|---|---|
| 2560×1080 | UW-FHD | 64:27 | 2.76 MP |
| 3440×1440 | UWQHD | 43:18 | 4.95 MP |
| 3840×1600 | UWQHD+ | 12:5 | 6.14 MP |
| 5120×1440 | DQHD | 32:9 | 7.37 MP |
Closest in total pixels
- 2560×1600 — WQXGA
- 2360×1640 — Tablet 10.9-inch
- 2560×1440 — QHD (1440p)
- 1440×3200 — QHD+ phone
- 1284×2778 — Phone large 19.5:9
- 3440×1440 — UWQHD
- 2048×1536 — Tablet 4:3
- 2880×1800 — Retina 15-inch
Frequently asked questions
What is the aspect ratio of 3840x1080?
32:9.
How many pixels is 3840x1080?
4,147,200 pixels, or 4.15 megapixels.
Is 3840x1080 higher resolution than 1080p?
3840x1080 has 2.00× as many pixels as a 1920×1080 frame.
What size screen suits 3840x1080?
Pixel density is what decides that. 300 PPI at 13.3 in, 256 PPI at 15.6 in, 166 PPI at 24 in, 148 PPI at 27 in, 125 PPI at 32 in. Below roughly 110 PPI text starts to look coarse; above about 200 the operating system will usually scale the interface rather than render it at native size.