Monitor Refresh Rate Test
Estimate your monitor's actual refresh rate using requestAnimationFrame. See your FPS and detected Hz in real time.
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Detected Refresh Rate
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Current FPS
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Est. Hz
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Samples
Keep this tab in the foreground for accurate results. The measurement improves with more samples.
How Does the Monitor Refresh Rate Test Work?
- The tool uses requestAnimationFrame to measure the time between screen updates.
- It collects hundreds of frame timing samples to calculate your average FPS.
- The median frame rate is matched to the nearest standard refresh rate (60, 75, 120, 144, etc.).
- Outlier samples are trimmed to improve accuracy.
Frequently Asked Questions
- Why does it show 60Hz when my monitor is 144Hz?
- Your browser or operating system may be limiting the frame rate. Make sure hardware acceleration is enabled in your browser, VSync matches your monitor rate, and you're not in battery saver mode.
- How accurate is this test?
- Browser-based refresh rate detection is an estimate. requestAnimationFrame is subject to browser throttling, background tab limitations, and system load. For exact specifications, check your monitor's manual or display settings.
- What is a good refresh rate?
- 60Hz is standard for most monitors. 120Hz and 144Hz are popular for gaming. 240Hz and above are used by competitive gamers. Higher refresh rates provide smoother motion and lower input lag.