Monitor Refresh Rate Test
Start and keep this tab visible for at least 5 seconds. Read the median frame interval and estimated Hz.
Test area
Results
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How to use this tool
Start and keep this tab visible for at least 5 seconds. Read the median frame interval and estimated Hz.
Method and units
requestAnimationFrame · 5 s · Hz ≈ 1000 / median(Δt ms)
What this test can and cannot tell you
Browser intervals are estimates, not certified USB rates, panel specifications or pure human reaction time.
Results reflect events and signals available to your browser. Settings, permissions and device support can affect them; they do not certify that hardware is healthy or faulty.
Input tests run in your browser. Camera and microphone access starts only after you request it.
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