A screen resolution checker shows the width and height of your display in pixels, plus your browser viewport size and device pixel ratio. Everything is read locally from your browser and updates live as you resize or move the window.
Detecting…
Reading your display. JavaScript must be enabled.
Browser viewport
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Device pixel ratio
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Aspect ratio
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Orientation
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Color depth
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Physical resolution
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Tailwind breakpoint
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Common name
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Paste the details into a bug report or support ticket.
Your physical resolution is highlighted when it matches a standard size.
| Resolution | Name | Total pixels |
|---|---|---|
| 1280 × 720 | HD (720p) | 0.9 MP |
| 1366 × 768 | HD (WXGA) | 1.0 MP |
| 1440 × 900 | WXGA+ | 1.3 MP |
| 1536 × 864 | HD+ (125% scaled 1080p) | 1.3 MP |
| 1600 × 900 | HD+ | 1.4 MP |
| 1920 × 1080 | Full HD (1080p) | 2.1 MP |
| 1920 × 1200 | WUXGA | 2.3 MP |
| 2560 × 1080 | Ultrawide Full HD | 2.8 MP |
| 2560 × 1440 | QHD (1440p) | 3.7 MP |
| 2560 × 1600 | WQXGA | 4.1 MP |
| 2880 × 1800 | Retina WQXGA+ | 5.2 MP |
| 3440 × 1440 | Ultrawide QHD | 5.0 MP |
| 3840 × 2160 | 4K UHD (2160p) | 8.3 MP |
| 5120 × 2880 | 5K | 14.7 MP |
| 7680 × 4320 | 8K UHD | 33.2 MP |
Open the checker on the display you want to measure. Your resolution appears instantly, with nothing to install.
CSS pixels are what websites see; physical pixels multiply them by the device pixel ratio.
Resize the window or drag it to another monitor to see live updates, then copy the details for a bug report.
Your screen resolution is shown at the top of this page as width × height. The first number is what your browser reports in CSS pixels; the physical resolution multiplies it by your device pixel ratio to give the panel's real pixel count.
Operating-system scaling makes browsers report smaller CSS pixel sizes. A 1920 × 1080 laptop at 125% Windows scaling reports 1536 × 864 with a pixel ratio of 1.25, and a Retina MacBook at 2x reports half its physical width and height.
Screen resolution is the size of the whole display. Viewport size is the area inside the browser window where a web page renders, so it shrinks when the window is not maximized or when toolbars, tabs, and scrollbars take up space. Responsive CSS breakpoints use the viewport width.
Device pixel ratio (DPR) is the number of physical screen pixels per CSS pixel. A DPR of 1 is a standard display, 2 is a Retina or HiDPI display, and phones often use 3. Browser zoom also changes the reported DPR.
1920 × 1080 (Full HD) remains the most common desktop resolution, followed by 1366 × 768, 1536 × 864, and 2560 × 1440. On phones, CSS viewport widths between 360 and 430 pixels are the most common.
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