What Is My Screen Resolution

Free online screen test that instantly detects your resolution, DPI and viewport

Your Physical Resolution

Detecting...

Logical Size
-
CSS Pixels
Usable Space
-
Excludes taskbar
Pixel Ratio
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DPR / Density
Viewport
-
Current Window
Aspect Ratio
-
Ratio
Color Depth
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Colors
PPI Calculator

Enter diagonal screen size (inches) to calculate sharpness.

Developer Toolbox

Generated code snippets for this device.

@media only screen 
  and (min-width: 1920px) 
  and (min-height: 1080px) {
    /* Styles */
}
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What Your Screen Resolution Actually Means and Why It is Important

What is my screen resolution? This is a question that often floats around the minds of web developers fine-tuning responsive layouts, designers ensuring their assets are pixel perfect before export or remote workers grappling with new monitor settings. But it’s not just about the numbers. Screen resolution has a big impact on how crisp your content looks, and how much you can fit on your display, which matters a lot when you’re trying to create seamless experiences across devices.

ToolCompanion’s intuitive tool makes this quest hassle-free by automatically detecting and displaying your screen details as soon as you arrive on the page. No clicks needed, it displays all the information from your current screen resolution to browser window size, usable space, viewport size, aspect ratio, color depth, and even DPI. All of which is useful for those serious about digital design or troubleshooting displays.

Whether you’re doing a quick screen check, or a deep comprehensive screen resolution test, this tool has all the info you need at your fingertips.

Key Features

Auto Detection

No clicks required, information is available as soon as the page loads.

Detailed Display

Shows full resolution of screen, browser window, viewport and usable space.

Aspect Ratio Insight

Identifies aspect ratios for media compatibility at a glance.

DPI Info

For visual pros, checks the color depth and print quality.

How to Use

1

Visit the Tool Page

Open the What Is My Screen Resolution tool page in your browser.

2

See Your Screen Details

After the page loads, your screen resolution, browser size, viewport dimensions, usable space, aspect ratio, color depth and DPI will be automatically detected and displayed.

3

Copy the Information or Share it

Click the "Copy All Details" button to instantly copy all the information to your clipboard.

Frequently Asked Questions

Q: What is the difference between screen resolution and browser viewport size?

Your screen resolution is the actual number of pixels on your physical display. The browser viewport is the part of your browser window that you can see. If you have toolbars, bookmark bars or the window isn’t maximized this area will be smaller.

Q: What does DPI mean for my screen?

DPI means dots per inch and it’s a way of measuring how many pixels are squeezed into one inch of your display. Higher DPI , the sharper the text and images will be . That is why Retina and high DPI screens look significantly more crisp.

Q: Why does my screen resolution matter for websites?

Websites and web applications are built to be viewed on specific screen widths and resolutions. Knowing yours helps you understand why some layouts look different on your screen to screenshots or designs made at a different resolution.

Q: How do I check my screen resolution on Windows or Mac without going into settings?

Simply use the What Is My Screen Resolution tool on ToolCompanion and it will instantly find and show your resolution without having to go through any system settings.

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