Screen Aspect Ratio Test

This page serves as an instant online aspect ratio test of your current screen. No downloads required as it is browser based. You can preview a video down below to see what exactly it does. The screen aspect ratio test that we have here is fully tensile, which means that it will actively update in real time, based to the screen dimensions that your browser window is subjected to.

Screen Aspect Ratio Test will test the height and width ratio in real time

Here’s how you should proceed:

• Click start button below to open the evaluation tool;
• Step 1: Make sure to enter full screen mode in your browser or resize the browser tab to the size of a different measurement of interest;
• Step 2: Give it some time and observe the aspect ratio indication appearing in the very center of your screen;
• Take a note of the number expression. This is a real time expression of aspect ration between the four corners of the browser’s screen;
• Read the information below on this page to learn how to apply and evaluate this particular test.

How this test works

Here is what we’re trying to do here:

In this test we will be using your browser’s screen area to determine the screen ratio. Keep in mind that your browser should be in full screen mode (Toggle with F11 on your keyboard)

This test is tensile – it is designed to rapidly adjust to changes in screen conditions in order to measure the aspect ratio in real-time. This could be particularly useful in environments where screen dimensions or orientations are frequently changing. You can open this test in different devices or drag the active browser tab across multiple screens to determine the aspect ratio of each screen.

General tips:

• One thing I really like about this way of determining aspect ratio is that you can simply open the test and drag this tab across multiple screens to see each aspect ratio immediately (for example main screen – laptop and two monitors might have different aspect ratio’s)
• You can use ALT+Prt Sc button combination to take a screenshot of this test screen for future references.

How to evaluate this test

You may be wondering how accurate this test is, so here is some info on how to evaluate and interpret the results.

The aspect ratio is measured between the indication squares in the corners of the browser’s screen. This will not account for the address bar, scrollbars or any other obstructions preventing your browser to span across the whole screen. Usually this can be resolved by entering full screen mode (F11) on your computer, while achieving this on mobile devices might be less straight forward.

Tip: Use full screen browser in Windows (F11) or Control + Command + F in Mac.

Analyze what you see: The text in the center of your screen will dynamically update and report current aspect ratio. It may change if you switch from portrait to landscape in your mobile device.

Results are based on all known standards: This means we apply minor rounding up to ensure we don’t exceed industry standards and commonly used formats, as well as to align with the expressions typically used to describe imaging dimensions, such as aspect ratio and proportional height and width.

Screen aspect ration examples

What’s Next?

Once you’ve finished testing different screens and displays for effective aspect ratios, there are additional tests available, including image reproduction quality assessments and long-term burn-in tests for LCD monitors, OLED TVs, and other screens. Explore and try out these quick and free online tests. Don’t forget to bookmark this site for future reference, so you can easily re-run any test whenever needed.