Is this my monitor's exact refresh rate?
No. The browser, system workload, and power settings can affect the timing. Compare the estimate with your display settings.
Refresh Rate Test
Estimate how often this browser updates an animation during a five-second test. The result reflects browser timing, not your screen's exact refresh rate.
Browser frame timing
Keep this tab visible during the test.
How to Use Refresh Rate Test
- Move the browser window fully onto the screen you want to check.
- Select Start 5-second test.
- Keep this tab visible and leave the window on that screen until the result appears.
- Read the estimated frames per second. Use Stop to cancel, or start another test to compare.
What you can check
- Compare repeat runs on one screen.
- Check timing after changing your display settings.
- Compare browser behaviour on two connected screens.
What your result means
Frames per second is the estimated number of browser animation updates in one second. A higher result means updates arrived more often during that run.
The median interval is the middle value of the gaps between updates. A wider interval range means timing varied more. The result does not measure screen response time or input delay.
Helpful tips
Close busy apps and keep the same power settings when comparing runs. Switching tabs cancels the test.
If the estimate seems low, check the refresh rate in your system settings and repeat. A low browser result alone does not prove a screen fault.
Frequently asked questions
Can I test an external screen?
Yes. Move the whole window onto that screen before starting. Keep it there for the full run.
Why does the result change between runs?
Other apps, browser work, and power saving can change timing. Repeat under similar conditions and compare the pattern, not a small difference.
Can the test increase my refresh rate?
No. It only reads browser timing. Change display settings through your device's supported controls if needed.
Related tools
- Dead Pixel Test - Look for dark, bright, or stuck pixels using eight solid screen colours.
- Mouse Polling Rate Test - Estimate mouse movement samples received by the browser during a five-second run.
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