Display
What Is My Screen Resolution?
Instantly check your screen resolution in pixels. See your display width and height without installing software.
Live Result
Detecting…
What is it?
Screen resolution is the total number of pixels your physical display can show, measured as width × height (for example, 1920 × 1080). It represents the native pixel grid of your monitor, laptop panel, or phone screen — not the size of your browser window.
Why this matters
Developers use screen resolution to design responsive layouts, QA teams verify display compatibility, and support staff diagnose rendering issues. Knowing your exact resolution helps when configuring remote desktop sessions, choosing wallpaper sizes, or troubleshooting blurry UI.
Practical Use Cases
- Web designers checking the maximum physical boundaries of a user's device to plan full-bleed layouts.
- Gamers verifying that their operating system is properly recognizing their monitor's native resolution.
- IT Support confirming what display hardware a remote worker is using.
- Users finding the exact pixel dimensions to download the perfect desktop wallpaper.
Common values
| Label | Value |
|---|---|
| Full HD | 1920 × 1080 |
| 2K / QHD | 2560 × 1440 |
| 4K UHD | 3840 × 2160 |
| MacBook Pro 14" | 3024 × 1964 |
| iPhone 15 Pro | 1179 × 2556 |
Troubleshooting
Resolution seems lower than my monitor specs
Check display scaling in your OS settings. Windows and macOS often scale UI at 125% or 150%, which can make reported CSS pixels differ from physical resolution.
Resolution changes when connecting an external monitor
This is normal. Each display has its own resolution. Disconnect external monitors to see your primary display resolution only.
Frequently asked questions
How can I check my screen resolution?
You can check your screen resolution instantly using this tool. It queries your browser's Screen API to securely report your physical pixel dimensions without installing anything.
Is screen resolution the same as viewport size?
No. Screen resolution is your full physical display size. Viewport size is the area inside your browser window where web content actually renders. Viewport is usually smaller because it excludes browser toolbars and OS taskbars.
Why does my resolution differ from the monitor spec?
Operating system scaling, browser zoom, and multi-monitor setups can affect the values reported to websites. If you have a Retina display, your physical pixels are higher than the CSS pixels reported.
Related Tools
- Screen SizeCheck your available screen dimensions after subtracting OS taskbars and system UI.
- ViewportSee your current browser viewport size in pixels. Instantly determine the rendering dimensions of your browser.
- Device Pixel RatioCheck your device pixel ratio (DPR). Find out your screen pixel density and Retina display scaling factor.
- Refresh RateTest your monitor refresh rate in Hz. Check if your display is running at 60Hz, 120Hz, or 144Hz.
Explore more diagnostics
Visit the DeviceScope homepage for a complete live dashboard, or browse all tools in the Display category.