How this test works
Measure an approximate display refresh rate without downloads. The test uses standard browser capabilities and does not require installing an application.
When to use it
- Before buying a used or refurbished laptop.
- When troubleshooting a device after a repair or update.
- Before selling or handing a device to someone else.
Important limitations
A website cannot fully diagnose every hardware component. Treat the result as a practical screening check. For faults that matter financially or affect safety, use operating-system diagnostics or a qualified repair technician.
Frequently asked questions
Is the result exact?
No. It is a browser estimate based on animation frame timing and can be influenced by system load and power settings.
Why do I see 60 Hz on a high-refresh display?
The browser window may be on another monitor, power saving may be active, or the operating system may be configured to 60 Hz.
Related device tests
Run the complete used-laptop checkup or continue with the device information test.