What Is My Screen Resolution
See your screen resolution, browser window size, pixel ratio and color depth.
Your screen resolution is
Values update live when you resize the window. Operating systems scale high-resolution screens, so websites see fewer “CSS pixels” than the panel physically has.
Continue your work
- What Is My User Agent — See your browser details.
- Screen Test — Test your screen for defects.
Share this tool
Found it useful? Send it to a friend or teammate.
Rate this tool
0.0
0 ratings
- 5 stars 0
- 4 stars 0
- 3 stars 0
- 2 stars 0
- 1 star 0
Clear instructions
Find steps, examples and limitations below.
Use online
Open the tool in a supported web browser.
Free to use
No sign-up required. Tool-specific limits may apply.
How to use the What Is My Screen Resolution
See your screen resolution, browser window size, pixel ratio and color depth.
- 1 Open the page to see your screen resolution at the top.
- 2 Resize the browser window to watch the viewport size update.
- 3 Share the details with a designer or developer testing a layout.
Example and practical tips
A laptop with a 2560 × 1600 panel at 200% scaling reports 1280 × 800 CSS pixels and a pixel ratio of 2, which is the size websites design for.
Frequently asked questions
Why is the resolution lower than my screen’s specification?
Operating systems scale high-resolution screens. Websites see CSS pixels; the physical pixel count is shown separately.
What is the viewport?
The visible area of the page inside the browser window, which responsive layouts adapt to.
Report an issue
Something broken or not quite right? Tell us and we will look into it.