Measure your display refresh rate in Hz and understand how often your screen updates every second. This tool helps you confirm whether your monitor is actually running at the refresh rate you selected in your system settings.
Click start and keep this tab active for the best reading.
Refresh rate is the number of times your monitor updates the image each second. It is measured in hertz (Hz). A 60Hz screen updates 60 times per second, while a 144Hz screen can update 144 times per second. Higher refresh rates can make motion look clearer and can reduce the time between your input and what you see.
FPS is produced by your device or game. Refresh rate is the maximum number of updates your screen can show. A 144Hz monitor cannot fully display 240 unique frames per second, and a game running at 45 FPS will still feel choppy on a 144Hz monitor.
| Result | What it usually means |
|---|---|
| Low or unstable numbers | Check power mode, browser settings, drivers, background apps, and device temperature. |
| Different result in another browser | Browser engines, extensions, and hardware acceleration settings can change test behavior. |
| Good result but bad gaming feel | Game settings, ping, input lag, in-game FPS, or frame pacing may be the real issue. |
Run the refresh rate test and compare the result with your display settings. On Windows, also check Settings > System > Display > Advanced display.
The monitor may be set to 60Hz in system settings, the cable may not support high refresh rate, the browser may be capped, or your laptop may be in power-saving mode.
Yes, 120Hz can show twice as many updates per second as 60Hz, making scrolling, gaming, and pointer movement feel smoother.
No. Refresh rate does not create more frames. It only controls how many frames your display can show if your device can render them.
Frame interval is the time between display updates. A 60Hz display is about 16.7 ms per frame, while 144Hz is about 6.9 ms.
They can estimate it well using animation frame timing, but background tabs, power saving, and browser limits can affect results.
60Hz is fine for casual use, 120–144Hz is excellent for most players, and 240Hz or higher is useful for competitive esports.
Sometimes. High refresh rate at high resolution may require HDMI 2.1, DisplayPort, USB-C DisplayPort Alt Mode, or another capable connection.