Refresh rate test
See how often your browser redraws, with a real frame-time chart.
LIVE TEST WORKSPACEESTIMATE · FRAME TIMESTAMPS
Is your screen keeping up?
A 5-second estimate. Keep this tab visible while sampling.
—Hz
MEDIAN FRAME TIME—ms
LONG INTERVALS—
SAMPLES—
This is browser timing, not a panel certification.
Display mode, battery saving, and workload can limit the result. A long frame interval is not proof of a defective display.
How to use this test
- Keep the test window on the display you want to check.
- Start sampling and keep the tab visible for 5 seconds.
- Compare the estimate with the selected system display mode.
Why does a 144 Hz screen show around 60 Hz?
Check the system display setting, browser limits, and battery saving mode. This tool measures animation callbacks and cannot prove the physical panel refresh rate.
Where is my test data stored?
The test runs on your device. Results are only saved to this browser when you choose Save. Clear them from the report page at any time. Audio and video are never uploaded.