Refresh rate test
A live measurement of how many frames per second your browser is really rendering, taken from animation-frame timing. The reading settles within a second or two.
Refresh rate FAQ
- Why does it show less than my monitor's advertised Hz?
- Browsers render at the rate the system grants them. Low-power mode, battery saver, a background tab, heavy pages in other windows, or a video playing elsewhere can all cap frame delivery below the panel's maximum. Close other work, plug in, and keep this tab focused for the truest reading.
- My monitor is 144 Hz but the browser says 60 Hz. Why?
- Check the display settings of your operating system first — monitors frequently ship set to 60 Hz even when the panel supports more. On Windows it's Settings → Display → Advanced display; on macOS it's System Settings → Displays → Refresh rate. Cables matter too: older HDMI standards can't carry high refresh rates at full resolution.
- What refresh rate do I actually need?
- 60 Hz is fine for office work and video (films are 24 fps). 120 Hz makes scrolling and cursor motion noticeably smoother. Competitive gaming benefits from 144–240 Hz. Higher rates use more power — that's why laptops with adaptive panels drop to lower rates on battery.