Screen Resolution Chart
Every common resolution below is listed with the ratio it actually simplifies to. Most are honest: the whole HD family is exactly 16:9. A few famous ones are not — 854×480 and 1366×768 only approximate 16:9, and no mainstream "21:9" panel is exactly 21:9.
| Name | Resolution | True ratio | Notes |
|---|---|---|---|
| 480p (FWVGA) | 854×480 | 427:240 | ≈16:9 — close to widescreen, not exactly |
| 720p HD | 1280×720 | 16:9 | The first "HD" step |
| 1080p Full HD | 1920×1080 | 16:9 | Still the most common screen resolution |
| QHD / 1440p | 2560×1440 | 16:9 | Gaming monitors and larger laptops |
| 4K UHD | 3840×2160 | 16:9 | Four times the pixels of 1080p |
| DCI 4K (cinema) | 4096×2160 | 256:135 | The film-industry 4K — slightly wider than UHD |
| 5K | 5120×2880 | 16:9 | Large all-in-one desktops |
| 8K UHD | 7680×4320 | 16:9 | Four times the pixels of 4K |
| Laptop (older, very common) | 1366×768 | 683:384 | ≈16:9 — famously not exactly 16:9 |
| XGA (classic) | 1024×768 | 4:3 | Older monitors and projectors |
| iPad (Retina) | 2048×1536 | 4:3 | Every mainstream iPad generation |
| Ultrawide UW-FHD | 2560×1080 | 64:27 | Sold as "21:9" |
| Ultrawide UW-QHD | 3440×1440 | 43:18 | Sold as "21:9" |
| Super-ultrawide | 5120×1440 | 32:9 | Two 16:9 panels side by side |
Why the "p" numbers keep the same shape
720p, 1080p, 1440p and 2160p all describe the height of a 16:9 picture, so the shape never changes as you step up — only the pixel count does: 1080p carries 2.25× the pixels of 720p (1.5× in each dimension), and 4K carries exactly 4× the pixels of 1080p (2× in each dimension). That is also why a 1080p video plays full-screen on a 4K TV with simple 2× scaling and no distortion.
Need a size that is not on the chart? Put any width and height into the aspect ratio calculator and it will simplify the ratio and scale it for you.
Frequently asked questions
Is 1366×768 really 16:9?
No. It simplifies to 683:384 (≈1.7786:1), while true 16:9 is 1.7778:1. The panels came from cutting glass sized for 16:10 production lines. The difference is sub-pixel in practice, which is why everyone calls it 16:9 anyway.
What is the difference between 4K UHD and DCI 4K?
UHD is 3840×2160 (exactly 16:9, made for TV). DCI 4K is 4096×2160 (256:135, ≈1.90:1), the cinema standard — 256 pixels wider at the same height.
How many pixels is 8K?
7680×4320 = 33,177,600 pixels, about 33.2 megapixels — sixteen times 1080p.