Refresh Rate Test

Measure your display's actual refresh rate and frame pacing stability directly in the browser.

Why This Test Matters

A monitor advertised as 120Hz, 144Hz, 165Hz, or 240Hz only feels correct when your operating system, graphics driver, browser, and cable are all delivering frames at that rate.

This test measures animation frame timing with requestAnimationFrame. It is useful for verifying display settings, detecting frame pacing instability, and checking whether a high-refresh monitor is accidentally running at 60Hz.

How to Use This Test

  1. Close heavy apps and extra browser tabs.
  2. Keep this tab visible during the measurement.
  3. Make sure your monitor is set to its intended refresh rate in your OS display settings.
  4. Click Start Measurement and wait five seconds.
  5. Compare the detected FPS with your expected monitor refresh rate.
Detected Refresh Rate
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Ready to measure
Average Frame Time
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Lower is faster
Frame Pacing Stability
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No samples yet
Click Start Measurement to test your display refresh rate.

Common Refresh Rates

60Hz
Standard office displays
120Hz
Modern TVs and tablets
144Hz
Common gaming monitors
240Hz+
Competitive gaming displays

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