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Determine Screen Resolution of Device

Shows the current screen resolution of your device. Useful for testing web design, responsive layouts, and screen settings.

Device screen characteristics

Screen Resolution in Pixels

Width: 0px

Height: 0px

Browser Viewport Resolution in Pixels (viewport)

Width: 0px

Height: 0px

Resize the window to see the resolution update in real-time.

Device Pixel Ratio (DPR)0
Device TypeDesktop
BrowserUnknown
Browser VersionUnknown
Browser EngineUnknown
Engine VersionUnknown
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Features of the "Screen Resolution Checker"

Determine Current Screen Resolution

Allows you to find out the width and height of the screen, which is useful for testing web design and UI/UX.

Track Window Size Change

Shows the updated screen resolution in real-time when changing the browser window size. This is useful for testing responsive layouts and checking UI on different resolutions.

Support for Different Browsers and Platforms

Works correctly in Chrome, Firefox, Edge, Safari, and other browsers, as well as on various devices. This allows you to test content display on Windows, macOS, Linux, and mobile OS.

Guide & Usage Details

What the Screen Resolution Checker Does

The Screen Resolution Checker detects your current screen resolution and device parameters in real time.

The tool displays:

  • screen width and height

  • device type

  • browser and rendering engine

  • browser version

Suitable for web development, responsive design, interface testing, and website display diagnostics.

What Is Screen Resolution

Screen resolution is the number of pixels displayed across the width and height of a screen.

Common Desktop Resolutions

Resolution

Format

Device Type

1366×768

HD

Older laptops

1920×1080

Full HD

Most common format

2560×1440

2K / QHD

Monitors

3840×2160

4K

HiDPI displays

Common Mobile Viewports

Viewport

Common Devices

360×800

Android devices

390×844

iPhone

412×915

Large Android devices

768×1024

Tablets

Screen Resolution vs Viewport

This is one of the most common sources of confusion.

Parameter

Meaning

Screen Resolution

The physical screen resolution of the device

Viewport

The visible area of the browser window

Device Pixel Ratio (DPR)

The ratio between CSS pixels and physical pixels

For example:

  • a monitor may have a resolution of 2560×1440

  • the browser viewport may be 1920×991

  • the DPR may be 2

In responsive web design, the viewport is usually the most important value.

Tool Description

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This tool determines the current screen resolution of the user, which is useful for testing responsive design, web development, and interface setup.

The service shows the width and height of the screen, which are important when creating websites and applications. This helps designers and developers check how their project is displayed on different devices.

Our tool is useful for diagnosing current browser/device settings, checking responsive layout, and diagnosing content display issues on different screen sizes.

Frequently Asked Questions (FAQ)

The tool shows screen dimensions in pixels, aspect ratio, browser information, and device type. This aids in responsive design and troubleshooting display issues.

Understanding screen resolutions helps create responsive designs that work across various devices. Common resolutions include 1920x1080 (Full HD), 1366x768 (laptop), and various mobile resolutions.

Screen resolution is the total number of pixels on your display. Browser viewport is the visible area within the browser window, which is smaller due to browser interface elements, taskbars, and other UI components.

Resize your browser window or switch your device to landscape/portrait orientation. The tool will instantly display the current viewport dimensions, helping you understand how content displays differently at different screen widths.

Focus on 1920x1080 (desktop), 1366x768 (laptop), 375x667 (mobile), and 768x1024 (tablet). However, design responsively to accommodate any screen size.

Pixel density (DPI - dots per inch or PPI - pixels per inch) refers to the number of pixels per square inch of a screen. High-density screens (Retina, 4K) require higher-resolution images and graphics to appear sharp.

Aspect ratio defines the width-to-height relationship of a screen (e.g., 16:9, 4:3). Responsive design should adapt to various aspect ratios to avoid unnecessary scrollbars or empty spaces.

Open the tool page in a mobile browser—it will show the current screen resolution and viewport dimensions, including the device orientation.

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