Screen Resolution Checker
Quick answer
It shows the browser-reported screen and inner dimensions plus device pixel ratio.
For a related estimate, see Browser Info Tool.
Explore further: User Agent Parser · Viewport Size Calculator
What the browser exposes
The page queries `screen` and `window` dimensions and `devicePixelRatio`. OS scaling and multi-monitor setups can change what you see; this is the same signal front-end code uses at runtime.
Explore further: Responsive Viewport Tester · Safe Area Checker
This tool reads your display and viewport from the browser so you can confirm resolution and pixel density without installing software. Use it when you are debugging layouts, writing media queries, or comparing machines.
How to use this calculator
- Open the tool: Open the page—readings populate from your current window and display.
- Tune inputs: Resize the window if you need viewport numbers for a specific breakpoint.
- Read the output: Copy or note values for your design or test matrix.
Real-world examples
- Typical laptop: You might see something like 1920×1080 logical pixels with DPR 1.25 on a scaled display.
- External monitor: Values update when you drag the window between displays—always verify on the target screen.
Explore further: Accessible Color Palette
Tips & gotchas
Match CSS breakpoints to viewport width, not to the physical monitor name. DPR affects sharpness of images and borders, not the CSS pixel width.
FAQ
Is this my GPU resolution?
It is what the browser reports for this window—OS UI scaling and zoom can change effective pixels.
Why does it differ from monitor specs?
Specs list panel resolution; the usable browser viewport is smaller once chrome and scaling apply.
Does this tool send my text to a server?
Calciverse runs in your browser; we do not store your inputs on our servers for these utilities. Anything that uses network APIs (for example DNS lookup) only sends what you explicitly request.
Why do results differ from another site?
Rounding, defaults, and implementation details (color spaces, tokenizers, DNS resolvers) can differ. Compare definitions, not just the headline number.