Display
Screen Size Checker
Check your available screen dimensions after subtracting OS taskbars and system UI.
Live Result
Detecting…
What is it?
The screen size checker determines the available screen size (measured in pixels), which is the portion of your display not occupied by the operating system taskbar, dock, or persistent menu bars.
Why this matters
When maximizing browser windows or designing kiosk apps, available screen area determines the maximum usable space. It differs from your total screen resolution by subtracting space reserved by the OS.
Practical Use Cases
- Designing progressive web apps (PWAs) that need to know the maximum safe area when running in standalone mode.
- Configuring remote desktop applications to perfectly fit the usable workspace without hiding local taskbars.
- Debugging layout issues where a maximized window is still clipping content.
Troubleshooting
Screen size matches full screen resolution
If you have auto-hiding taskbars or docks enabled in your operating system, the available screen size will often equal the full screen resolution.
Frequently asked questions
What is my screen size?
Your available screen size is automatically detected and displayed on this page. It represents the maximum pixel area a window can occupy without overlapping your operating system UI.
How is this different from display dimensions in inches?
This tool measures pixel dimensions for web rendering. To find your physical monitor size in inches (like a 27" monitor), you need to look at your hardware specifications or measure the diagonal glass manually.
Related Tools
Explore more diagnostics
Visit the DeviceScope homepage for a complete live dashboard, or browse all tools in the Display category.