Devices with a 2560px wide viewport
2560px4 devices + 2 with other display settings
4 devices give web pages a 2560 CSS pixel wide viewport, with heights from 1080 to 1440px. If your layout fits 2560px, it fits all of them. Sizes this wide are about 2.48% of worldwide traffic in StatCounter’s top lists (Aug 2026).
| Device | CSS viewport | DPR | Physical pixels | Year |
|---|---|---|---|---|
| 27″ QHD 2560×1440 | 2560×1440 | 1 | 2560×1440 | – |
| 27–32″ 4K @ 150% (Windows) | 2560×1440 | 1.5 | 3840×2160 | – |
| 29″ Ultrawide 2560×1080 | 2560×1080 | 1 | 2560×1080 | – |
| Studio Display 27″ (5K) | 2560×1440 | 2 | 5120×2880 | 2026 |
Also 2560px wide with a different setting
| Device | Setting | CSS viewport |
|---|---|---|
| 27″ 4K on a Mac (default) | Looks like 2560×1440 | 2560 × 1440 |
| iMac 24″ (4.5K) | More space | 2560 × 1440 |
Check your site at 2560px
Paste your address (or localhost:3000). doesitfit shows it on real screen sizes at once and tells you, bluntly, where it spills.
Free, no sign-up. Or ask Claude, ChatGPT or Codex to check it.
Designing for 2560px
Breakpoints
Tailwind: 2xl (sm: md: lg: xl: 2xl: styles apply). Bootstrap: xxl.
Room for content
2528px with 16px side padding, 2512px with 24px. Anything fixed wider than 2560px makes the page scroll sideways (fix it).
Sharp images
At DPR 1 / 1.5 / 2, a full-width image needs 2560px / 3840px / 5120px of real pixels.
Every height at this width
Nearby widths
Questions people ask
Which monitors have a 2560px wide viewport?
27″ QHD 2560×1440, 27–32″ 4K @ 150%, 29″ Ultrawide 2560×1080, Studio Display 27″, plus 2 more when the display size or scaling setting is changed.
Is 2560px the screen resolution?
No. 2560px is the width in CSS pixels, what web pages get. The screens have 1, 1.5, 2× as many physical pixels across (the device pixel ratio).
Which breakpoint applies at 2560px?
Tailwind CSS: 2xl (sm: md: lg: xl: 2xl: styles apply). Bootstrap: xxl. Media queries use this CSS width, not the screen resolution.
How common is a 2560px wide screen?
Screen sizes 2560px wide make up about 2.48% of the traffic in StatCounter’s top lists for Aug 2026 (2560×1440: 2.48%).
Guides that help
- Responsive breakpoints in 2026 — the widths that matterWhere 123 real phones, tablets, laptops and monitors land in CSS pixels, which responsive breakpoints actually matter in 2026, and which screens to test.Guides · 8 min read
- Most common screen resolutions in 2026 (real data)StatCounter's August 2026 figures for the most common desktop, mobile and tablet screen resolutions, what they really measure, and which sizes to test.Data · 7 min read
- Windows display scaling and the 1536×864 viewportWhy a 1920×1080 Windows laptop shows websites at 1536x864, what 100%, 125% and 150% scaling do to your viewport, and how much height is left in Chrome.Devices · 7 min read