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Quad High Definition (QHD) is a display and video resolution of 2560 × 1440 pixels, also known as 1440p. It contains about 3.69 million pixels, which makes it sharper than Full HD (1920 × 1080) but noticeably below consumer 4K (3840 × 2160).
What the QHD dimensions mean
A QHD screen or video frame is 2560 pixels wide and 1440 pixels tall. Android’s developer documentation for the CameraX Quality API describes the QHD video tier as “Quad High Definition (QHD) 1440p video quality” and says that this quality “usually corresponds to a resolution of 2560 x 1440 (1440p) pixels.” The word “usually” matters: the label describes a standard size, but the exact output depends on the camera and the app.
Multiplying the two dimensions gives the total pixel count: 2560 × 1440 = 3,686,400 pixels. Samsung Business Insights (2026) gives the same figure in its comparison of QHD, Full HD and 4K monitors. A government document from the California Energy Commission, dating from about 2013, rounds the same number to 3.69 megapixels.
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The “quad” in the name refers to pixel count, not to a fourfold increase in width or height. Full HD (1920 × 1080) is the reference point. QHD doubles the width and the height of 1280 × 720 HD, so the total pixel count is four times that of HD, which is why HP’s consumer explainer describes QHD as quad HD. Note that 2560 × 1440 is not exactly double 1920 × 1080, so the comparison with Full HD is roughly 1.78 times the pixels rather than four times.
#1 Best Overall
- QHD Resolution (2560 x 1440) has 1.7 times the pixel density of Full HD for incredibly detailed pinsharp images
- HDR10 provides brighter highlights and nuanced shadow for added depth - making every scene feel more vivid and realistic
- The 180Hz refresh rate minimizes lag for gameplay with ultra-smooth action. Plus, the 1ms response time helps capture your moves in real-time, allowing you to react fast for gaming precision
- AMD FreeSync reduces choppiness, screen lag and image tearing, ensuring that your fast-paced, complex in-game action is stable with minimal stutter
- Ergonomic stand allows for tilt, pivot and height adjustments to maximize gaming comfort
QHD compared with Full HD, 2K and 4K
| Name | Dimensions | Total pixels | Notes |
|---|---|---|---|
| HD (720p) | 1280 × 720 | 921,600 | The base for the “quad” comparison. |
| Full HD (1080p) | 1920 × 1080 | 2,073,600 | Lower resolution than QHD, per the California Energy Commission material. |
| QHD (1440p) | 2560 × 1440 | 3,686,400 | Android’s documented QHD/1440p size. |
| UHD / consumer 4K (2160p) | 3840 × 2160 | 8,294,400 | Android lists this as the usual UHD/2160p size. It is not QHD. |
| Cinematic 2K | 2048 × 1080 | 2,211,840 | A film-production format, not the same as QHD. |
The pixel totals in the table are simple arithmetic from the listed dimensions. The figures for each name come from the sources noted in the text above.
Is QHD the same as 4K?
No. Android’s documentation treats QHD/1440p and UHD/2160p as separate tiers. A 4K display has about 2.25 times as many pixels as a QHD display, so the two should not be used as synonyms in product listings or specifications.
Rank #2
- MSI's 27-inch WQHD IPS monitor (2560×1440) delivers a 1000:1 contrast ratio with wide 178°/178° viewing angles — producing 78% more pixels than Full HD for sharper detail, more accurate colors, and a clearer, more expansive workspace for productivity and creative work.
- TÜV Rheinland certified Flicker Free and Low Blue Light — eliminating the ~200Hz screen flicker common on standard monitors and reducing harmful blue light exposure to minimize eye strain and fatigue during extended work, creative, or everyday computing sessions.
- 75Hz refresh rate delivers noticeably smoother motion than standard 60Hz displays — reducing screen tearing and stuttering for more fluid everyday computing, video streaming, and casual gaming on a sharp 27-inch WQHD 2560×1440 IPS panel.
- MSI's built-in Eye-Q Check provides a vision assessment tool to help optimize display settings for healthier long-term viewing — designed for professionals and students spending extended hours in front of a 27-inch WQHD IPS screen.
- VESA 100×100mm wall mount compatibility provides full flexibility to mount on any standard monitor arm, wall bracket, or desk stand — saving desk space and enabling ergonomic positioning for a more comfortable and organized WQHD productivity or work-from-home setup.
Is QHD the same as 2K?
Often, but not precisely. LG notes that QHD is commonly called “2K” in consumer marketing, while cinematic 2K is 2048 × 1080, a different format with a different aspect ratio. If accuracy matters, use “QHD” or “1440p” rather than “2K.”
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Support for a given resolution depends on the specific hardware and software, not on the name of the product line. Intel advises checking the display documentation or asking the manufacturer which modes are supported. Use this sequence:
Rank #3
- High-Performance Quad HD Display: Elevate your home office with this 27 Inch 2K (2560 x 1440) LED monitor featuring a smooth 100Hz refresh rate; the IPS panel and frameless design deliver consistent colors and wide viewing angles for seamless setups
- Seamless Frameless Design: Maximize your viewing area with an immersive edge-to-edge screen; the ultra-thin bezels provide a sleek aesthetic and enable nearly seamless multi-monitor setups for a more productive and expansive workspace
- Smooth Adaptive Sync Performance: Enjoy fluid visuals for casual gaming and multimedia with VESA Adaptive Sync technology; this feature enables a smooth 75Hz refresh rate to ensure consistent frame rates and reduced screen tearing for a seamless experience
- Enhanced Viewing Comfort: Minimize eye fatigue during long workdays or study sessions with integrated Flicker-Free technology and a Blue Light Filter; these eye care features provide a more comfortable viewing experience for students and professionals
- Tailored ViewMode Settings: Optimize screen performance with ViewSonic exclusive ViewMode presets; quickly switch between “Game,” “Movie,” “Web,” “Text,” and “Mono” modes to get the ideal gamma curve, contrast, and brightness for any task or application
- Confirm the panel’s native resolution in the monitor or laptop specification sheet. It should read 2560 × 1440.
- Check the supported refresh rate and color depth at that resolution, since these limits are often different at 1440p than at 1080p.
- On Windows, open Settings > System > Display and confirm that 2560 × 1440 appears under Display resolution.
- If QHD is missing, update the graphics driver and check the cable: older HDMI versions may not carry 1440p at high refresh rates.
Where the term came from
The sources reviewed for this article do not establish who first used “Quad High Definition” or when. Treat any claim about its origin as unverified unless it comes from a primary historical source.
For the official wording on the CameraX quality tiers, see the Android Developers CameraX documentation. Samsung’s comparison of QHD, Full HD and 4K is at insights.samsung.com.
Quick Recap
Rank #4
- 27" WQHD IPS Panel: Experience stunning, crystal-clear visuals and vibrant colors for graphic design, work, or streaming. This 1440p monitor and 27 inch computer monitor elevates your home office setup and boosts productivity
- TV Certified Eye Care: Work late or stream safely without headaches or eye fatigue. This flicker-free and low blue light eye care monitor protects your vision during long hours, making it a productivity monitor for daily use
- 75Hz Adaptive-Sync: Enjoy buttery-fluid scrolling and lag-free casual gaming after work. This smooth 75hz monitor eliminates screen tearing and choppy frame rates, doubling as a budget gaming monitor for seamless entertainment
- Frameless VESA Design: Maximize desk space and build a stunning, seamless dual monitor setup. This sleek vesa mount monitor features an edge-to-edge frameless display, delivering a modern aesthetic that complements any professional workspace
- Expansive Connectivity: Effortlessly connect your laptop, PC, or console via HDMI, DisplayPort, and VGA ports. An incredibly versatile HDMI monitor that ensures broad compatibility for a highly efficient, multi-device workstation
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