Refresh Rate Test (UFO Test)
The UFO below is moving at your screen's maximum refresh rate. A higher refresh rate (Hz) results in smoother motion.
Detected Refresh Rate: Calculating... Hz
How to Use This Refresh Rate Test
This UFO test visually demonstrates your monitor's refresh rate. Your browser syncs the animation to your monitor's refresh cycle. Our refresh rate test script then calculates the rate based on the time between frames, giving you an accurate measurement of your monitor's current Hz setting.
- Smooth Motion: On a high refresh rate monitor (e.g., 120Hz, 144Hz, or higher), the UFO should glide across the screen very smoothly. This is the primary goal of a high-Hz display.
- Stuttering or Judder: If the UFO in the test appears to stutter or jump, your monitor might not be running at its advertised refresh rate. Check your display settings in your operating system to ensure the correct rate is selected.
- Motion Blur: Observe the clarity of the moving UFO. Less blur (or 'ghosting') indicates a better response time, which often complements a high refresh rate for the best gaming experience.
Refresh Rate Test FAQ
What is refresh rate (Hz)?
Refresh rate, measured in Hertz (Hz), is the number of times per second your monitor updates the image on the screen. A 60Hz monitor updates 60 times per second, while a 144Hz monitor updates 144 times. A higher refresh rate results in smoother, more fluid motion, which is why this refresh rate test is so important for gamers.
Why does my refresh rate test show a lower value than advertised?
There are several reasons this might happen. First, ensure you have set the correct refresh rate in your operating system's display settings (Windows or macOS). Second, make sure your graphics card drivers are up to date. Finally, ensure you are using a cable (like DisplayPort or a high-speed HDMI) that supports your monitor's maximum refresh rate. The UFO test accurately reflects what your system is currently outputting.