Device Test Hub- Home
- Refresh Rate Test
Refresh Rate Test
Measuring starts automatically. Wait a few seconds for the value to settle.
Refresh rate (measured)Measuring…
How to use
- Leave the page open for a few seconds without switching tabs
- Check that "Looks like a … Hz display" matches your monitor's spec
- If a 144 Hz monitor shows 60 Hz, see the troubleshooting below
If it does not work
- Windows: Settings → System → Display → Advanced display, check "Choose a refresh rate"
- Cables: high refresh rates may need DisplayPort or a capable HDMI cable and port
- Battery saver on laptops and phones can limit browser rendering to 60 Hz
- With several monitors, the result is for the screen this window is on
FAQ
How is it measured?
By timing the intervals between the browser's repaint callbacks (requestAnimationFrame) and using their median.
What about variable refresh (G-SYNC, FreeSync, ProMotion)?
The rate changes with content, so the value may vary or land between common numbers.
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