Monitor Refresh Rate Test (Hz) & FPS Checker
Click the "Launch Fullscreen Test" button to begin the display refresh rate test. This online tool accurately measures your monitor's refresh rate in Hertz (Hz) by detecting its frames per second (FPS). For example, if you want to perform a 120Hz refresh rate test to confirm your high-performance screen is correctly configured, this tool provides a real-time FPS reading directly from your browser.
For the most accurate results, close any demanding applications running in the background. After the test, your results will be displayed on this page.
Refresh Rate (Hz) vs. Frames Per Second (FPS)
Refresh Rate (Hz) is a property of your monitor, indicating the maximum number of times it can update the displayed image per second. A 144Hz monitor can refresh its picture 144 times per second.
Frames Per Second (FPS) is the number of frames your computer's graphics card sends to the monitor each second. Our FPS checker measures this value to determine the effective refresh rate your system achieves in the browser.
For a perfectly smooth experience, your FPS should match your monitor's refresh rate. Since your browser cannot run faster than your monitor's maximum Hz, the detected FPS is a reliable approximation of your current refresh rate. If the FPS is lower than you expect, check your system's display settings or for background processes that may be limiting performance.
What is Screen Tearing?
The moving bar in our test can help you spot screen tearing, which occurs when your graphics card's output is out of sync with your monitor's refresh rate. This creates a visible "tear" or disjointed line in moving images. A stable frame rate that matches your monitor's Hz typically eliminates this issue.