Monitor Refresh Rate Tester
Test your monitor's actual refresh rate. Verify if your display is running at 60Hz, 144Hz, 240Hz, or any other refresh rate.
Monitor Refresh Rate Tester
Test your monitor's actual refresh rate using requestAnimationFrame
Common Refresh Rates
60 Hz
Standard
120 Hz
Gaming
144 Hz
Popular
240 Hz
Pro
Notes:
- Close other browser tabs for more accurate results
- Browser FPS is capped by your monitor's refresh rate
- Results may vary based on browser and system load
- For best accuracy, run the test multiple times
How to Use
- 1Prepare — Close other browser tabs and applications for accurate results.
- 2Start test — Click the Start Test button to begin measuring.
- 3Wait — The test runs for 5 seconds, measuring frame times.
- 4View results — See your estimated refresh rate and frame consistency.
Frequently Asked Questions
How does this test work?
The test uses requestAnimationFrame to measure how many frames your browser can render per second. Since browsers cap FPS at your monitor's refresh rate, this gives us an estimate of your Hz.
Why is my result different from my monitor's specs?
Several factors can affect results: V-Sync settings, browser limitations, background processes, or your monitor not actually running at its maximum refresh rate. Check your display settings.
What is frame consistency?
Frame consistency measures how evenly spaced your frames are. 100% means perfect timing between frames. Lower values indicate stuttering or frame time variations.
Why does refresh rate matter for gaming?
Higher refresh rates provide smoother motion, reduced input lag, and can give competitive advantages in fast-paced games. 144Hz is a popular choice for gaming.
How do I enable my monitor's full refresh rate?
Check your display settings in Windows (Display Settings > Advanced Display) or macOS (System Preferences > Displays). Make sure the highest refresh rate is selected.