What is my screen resolution?
Read by your browser in this tab. Nothing is sent anywhere.
Your screen resolution
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- Screen resolution (real pixels)
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- Screen size (CSS pixels)
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- Device pixel ratio (scaling)
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- Browser viewport
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- Available screen (without taskbar)
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- Aspect ratio
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- Orientation
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- Colour depth
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Resize the window or zoom and the values update. Set browser zoom to 100% for the true resolution.
How to use this tool
See your screen resolution, display scaling and browser window size. Nothing is sent anywhere.
Open Screen resolution
The big number is your screen resolution in real pixels.
Read the details
CSS size and device pixel ratio explain display scaling; viewport is the page area of the browser window.
Copy for support
Copy details copies every value, ready to paste into a bug report or a support chat.
FAQ
What is my screen resolution?
The large number at the top is your screen's resolution in real pixels. It is the screen size the browser reports multiplied by the device pixel ratio.
Why is it different from my monitor's specification?
With display scaling (for example 125% or 150% in Windows, or a Retina Mac) the browser lays out pages in CSS pixels. 1920 × 1080 at 125% is reported as 1536 × 864 CSS pixels. Browser zoom also changes the pixel ratio, so reset zoom to 100% for the true figure.
What is the viewport?
The part of the browser window that shows the page, in CSS pixels. It changes as you resize the window and is what responsive web designs use.
What is the device pixel ratio?
How many real pixels make up one CSS pixel. 1 is a standard screen, 2 or 3 is common on phones and Retina screens, and 1.25 or 1.5 means display scaling is on.
Is anything sent to a server?
No. The values are read by your browser in this tab and are not saved or uploaded.