Refresh Rate Test
Measures the real refresh rate of your display in Hertz. The test runs for five seconds via requestAnimationFrame and shows the average, minimum, and maximum. Entirely local.
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The result will appear here …
Refresh Rate Test: measure the real refresh rate of your display
With this refresh rate test you measure the actual refresh rate of your monitor or display in Hertz. The test runs for five seconds and uses requestAnimationFrame, the browser drawing loop. The result shows the average, minimum, and maximum of the detected frequency. This lets you see whether your display really runs at 60, 90, 120, or 144 Hz. The test runs entirely locally and nothing is transmitted.
How the measurement works
The browser is told how fast a display can redraw. Depending on your settings, your monitor reports whether it shows, for example, 60 or 144 frames per second. The test counts these frames over five seconds and works out the average per second. A reliable result requires the window to be visible and not to be moved.
Why the measured rate can differ from the stated one
- The monitor is set to a lower rate than its maximum in the operating system.
- Power saving modes or dynamic refresh switching lower the rate for static content.
- A cable or adapter may not support higher frequencies.
- Other applications and background load can delay individual frames.
Frequently asked questions
What is the refresh rate?
The refresh rate tells you how often a display shows a new image per second, measured in Hertz. 60 Hz means 60 images per second, 144 Hz means 144.
How long does the measurement take?
The test runs for five seconds. Keep the window visible and do not move the page during this time so the result remains meaningful.
Why does the test show a different number than my monitor?
If the measurement is below the manufacturer value, the display is often set lower in the operating system. Also check the cable and connection and whether power saving modes are active.
Are the results uploaded?
No. The measurement runs entirely in your browser. No measurement values are sent to a server.
Does the test work on laptops?
Yes. The test only uses the browser and the display drawing loop. It works on monitors as well as on laptop screens.