Screen Refresh Rate Test – Check Display Hz & Motion Smoothness Online

The Screen Refresh Rate Test on ZafScreen.com is a browser-based tool that helps you estimate your display’s refresh rate and visually observe how smoothly motion appears on your screen.

Refresh rate is usually measured in Hertz (Hz). A 60 Hz display refreshes the image around 60 times per second, while higher-refresh displays such as 120 Hz, 144 Hz, 165 Hz, or 240 Hz can make supported motion appear smoother.

Sounds technical. The test itself is simple.

The ZafScreen online refresh rate test uses browser animation timing together with a moving visual object. Once the test starts, the tool estimates your current refresh rate and frame timing while giving you something moving on screen to compare visually.

You can choose Slow, Medium, or Fast motion presets. There is also a more precise Motion Speed control if you want to fine-tune how quickly the object travels.

The Trail Length setting adds an adjustable visual trail behind the moving object. This can make differences in motion behavior easier to observe. You can also turn Show Motion Trail on or off and enable a Grid Background to provide fixed visual reference points.

For the cleanest viewing experience, use Fullscreen mode.

One thing is important though. This is a browser-based refresh rate estimate, not laboratory measurement equipment. Variable Refresh Rate (VRR), adaptive sync, power-saving settings, browser throttling, background tabs, device performance, and other software conditions may affect the displayed result.

So if your monitor is advertised as 144 Hz but the browser reports something slightly different, that does not automatically mean there is a hardware problem.

Use the tool as a quick visual and browser-based reference.

How to Use the Screen Refresh Rate Test

1. Open the Screen Refresh Rate Test on ZafScreen.com.
2. Click Start Test.
3. Allow the animation to run for a few moments.
4. Check the estimated refresh rate shown in Hz.
5. Choose Slow, Medium, or Fast motion.
6. Adjust the Motion Speed slider if needed.
7. Change Trail Length to compare motion more clearly.
8. Turn the Motion Trail and Grid Background on or off.
9. Click Fullscreen for a cleaner test area.
10. Select Reset whenever you want to restart the test.

5 Useful Ways to Use the Screen Refresh Rate Test

1. Check Your Display Hz – Get a quick browser-based estimate of whether your screen is running around 60 Hz, 120 Hz, 144 Hz, or another rate.
2. Compare Motion Smoothness – Observe how slow and fast moving objects appear on your display.
3. Check a New Gaming Monitor – Perform a quick visual check after connecting or configuring a higher-refresh-rate monitor.
4. Compare Two Displays – Run the same motion test on different monitors, laptops, tablets, or compatible devices.
5. Review Display Settings – Useful after changing refresh-rate, graphics, power-saving, or display settings to see whether browser-reported timing changes.

Logos, Brand Names and Trademark Note

Any third-party logos, brand names, product names, trademarks, graphics technologies, operating-system names, browser names, or recognizable references appearing elsewhere on ZafScreen.com remain the property of their respective owners.

They are used only for identification, informational, descriptive, comparison, or simulation purposes where applicable.

ZafScreen.com is not affiliated with, sponsored by, endorsed by, or officially connected with any monitor manufacturer, graphics-card company, computer brand, operating-system provider, browser developer, or other third-party company unless clearly stated otherwise.