Refresh Rate Test
Detect your monitor's actual refresh rate. This test uses the browser's requestAnimationFrame API to precisely measure frame timing, supporting displays from 60Hz to 480Hz.
Browser PrecisionHigh
Display refresh rate measured directly via requestAnimationFrame timing. Frame intervals analyzed with trimmed mean for accuracy.
Frequently Asked Questions
What is monitor refresh rate?
Refresh rate is the number of times per second your display updates its image, measured in Hertz (Hz). Common values are 60Hz (office), 144Hz (gaming), and 240Hz (esports). Higher refresh rates produce smoother motion.
How do I check if my monitor supports high refresh rates?
On Windows: Settings > System > Display > Advanced display settings > Choose a refresh rate. On macOS: System Settings > Displays > hold Option and click 'Scaled' to see available refresh rates.
Is the browser test result accurate?
The browser uses requestAnimationFrame timing, which is precise enough to confirm whether your monitor is running at its rated refresh rate (e.g., confirming 144Hz instead of 60Hz). Results may vary by ±2Hz due to browser load.