How to use the refresh rate test
- 1
Keep this tab visible and avoid moving the window.
- 2
Start the measurement and wait for the sample to complete.
- 3
Review detected Hz and timing stability, then repeat if settings change.
Refresh Rate Test
Check screen refresh rate with browser animation timing and a practical stability indicator.
✓Runs locally in your browser — no account or uploads required.
Interactive browser testResults stay in this session
—Hz
Ready when you are.
Browser scheduling, variable refresh rate, power saving, the operating system, and display configuration can affect this estimate.
Interpreting monitor refresh-rate results
Common display modes include 60 Hz, 75 Hz, 120 Hz, 144 Hz, 165 Hz, and 240 Hz. The appropriate setting depends on the display, connection, workload, and preference; a higher number is not universally required.
This tool estimates timing from requestAnimationFrame. Variable refresh rate, power saving, browser scheduling, dropped frames, the operating system, and moving the tab between monitors can produce small changes between runs.
Troubleshooting
Result is lower than expected
Check display settings, power saving, cable capabilities, and the active monitor.
Results vary
Variable refresh rate, scheduling, and background work can change estimates.
No measurement
Keep the tab active because browsers throttle background animation.
Refresh Rate Test FAQ
Is this a laboratory measurement?
No. It is a practical estimate based on browser frame timing.
Why does 60 Hz show 59–61 Hz?
Small scheduling and timing differences are normal.
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