Refresh Rate Test: Screen Hz Tester

Use this free online refresh rate test to check your monitor Hz. The screen Hz tester measures how many frames per second your display renders and estimates whether you are running at 60Hz, 120Hz, 144Hz, or higher.

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Click Start to measure your screen refresh rate.

This screen refresh rate tester measures how many frames per second your browser renders, then estimates your monitor's Hz. For the most accurate reading, close other tabs and heavy apps, then keep this tab in focus while it measures.

How to Check Your Monitor Refresh Rate

Your monitor refresh rate is how many times per second the screen redraws the image, measured in Hertz (Hz). A 60Hz display refreshes 60 times a second, while a 144Hz gaming monitor refreshes 144 times. A higher refresh rate makes motion, scrolling, and gameplay look smoother.

This monitor refresh rate checker works by measuring your browser's real frame rate. Because browsers sync animation to your display, the frames per second we count closely matches your actual screen Hz. Click Start Refresh Rate Test, wait a few seconds, and the tool locks in an estimated value.

Tips for an accurate reading

  • Close other browser tabs and demanding applications.
  • Plug laptops into power — battery saver modes often cap the refresh rate.
  • Set your OS display settings to the highest available refresh rate first.
  • Keep this tab focused and in the foreground while it measures.

Once you know your refresh rate, run our monitor test suite to check for other display issues like dead pixels, backlight bleed, or screen burn-in and image retention.

Frequently Asked Questions

This screen Hz tester uses the browser's animation timing to count how many frames per second your display renders. After a few seconds it estimates your monitor refresh rate by matching your sustained frame rate to the nearest common value such as 60Hz, 120Hz, or 144Hz.

Browsers cap animation frame rate to your display refresh rate, but background tabs, power-saving modes, and heavy apps can lower the measured value. Plug your laptop into power, close other tabs, and make sure your operating system display settings are set to the highest available refresh rate, then run the test again.

For everyday use, 60Hz is fine. For smooth gaming and scrolling, 120Hz to 144Hz feels noticeably better, and competitive gamers often use 240Hz or higher. The higher the refresh rate, the smoother motion appears on screen.