Refresh Rate Test
Free Online Monitor & Screen Hz Tester
Instantly test your monitor's refresh rate with our UFO-powered Hz detector. Works on PC monitors, gaming displays, iPhones, Android phones, tablets, and TVs. Discover if you're running at 60Hz, 90Hz, 120Hz, 144Hz, or 240Hz.
How the Refresh Rate Test Works
Our refresh rate tester uses the browser's requestAnimationFrame API to precisely count how many frames your display renders per second\u2014the same method used by professional tools like Blur Busters.
- Click Start Test: The monitor refresh rate test runs for approximately 1 second, sampling multiple frame intervals for accuracy.
- View Your Hz Result: See your exact refresh rate displayed with a tier badge\u2014Bronze (60Hz), Silver (90Hz), or Gold (120Hz+).
- Watch the UFO: Our UFO refresh rate test animation speeds up based on your Hz\u2014the faster it moves, the higher your refresh rate!
- Verify Your Settings: If results don't match expectations, check your display settings. Many monitors default to 60Hz even when capable of higher rates.
Understanding Refresh Rate Tiers
The baseline for most monitors, laptops, and older phones. Adequate for office work, browsing, and video streaming. Run a 60Hz refresh rate test to confirm your display's default mode.
Common on premium smartphones (iPhone Pro, Pixel, Samsung Galaxy). Noticeably smoother scrolling than 60Hz with reduced motion blur. Use our phone refresh rate test to verify.
Found on gaming monitors, iPad Pro, and high-end phones. Excellent for competitive gaming and professional creative work. The 120Hz refresh rate test confirms you're getting full performance.
The sweet spot for PC gaming. Dramatically smoother than 60Hz with noticeably reduced input lag. Run a 144Hz refresh rate test to ensure your GPU settings match your monitor's capability.
Professional esports and ultra-high-performance displays. Minimal motion blur and maximum responsiveness. Our 240Hz refresh rate test confirms you're achieving peak performance.
What Is Refresh Rate?
Refresh rate (measured in Hertz/Hz) indicates how many times per second your screen redraws the image. A 60Hz display refreshes 60 times per second, while a 144Hz display refreshes 144 times\u2014resulting in smoother motion, less blur, and more responsive input.
Why Refresh Rate Matters
- Gaming Performance: Higher refresh rates reduce motion blur and input lag, giving competitive advantages in fast-paced games.
- Eye Comfort: Higher Hz reduces flicker perception, potentially decreasing eye strain during extended use.
- Smooth Scrolling: Text and UI elements move more fluidly on high-refresh displays, improving the overall user experience.
- Professional Work: Video editors and animators benefit from seeing smoother playback and more responsive timeline scrubbing.
Refresh Rate Testing FAQ
How do I test my monitor's refresh rate?
Click the 'Start Test' button above. Our online refresh rate test automatically measures your display's Hz using browser APIs. Works on any device with a web browser\u2014PC monitors, laptops, phones, tablets, and smart TVs.
How to test refresh rate on iPhone?
Open this page in Safari on your iPhone. Our iPhone refresh rate test works on all models, including iPhone 13 Pro and newer with ProMotion (120Hz). iPhone 14/15 standard models are limited to 60Hz by hardware.
How to test refresh rate on Android?
Load this page in Chrome or any browser. Our screen refresh rate test Android compatible tester works on Samsung, Pixel, OnePlus, and all Android devices. Many Android phones support 90Hz, 120Hz, or even 144Hz.
Why does my test show lower than expected?
Common causes: 1) Display settings defaulted to 60Hz (check Windows/Mac display settings), 2) Power saving mode limiting refresh rate, 3) Variable refresh rate adapting to content, 4) HDMI cable bandwidth limitations.
How to test TV refresh rate?
Use the TV's built-in browser or cast this page from a phone. Note: Many TVs advertise '120Hz' but use motion interpolation\u2014true native TV refresh rate test results often show 60Hz for real input refresh.
What is the UFO test?
The UFO refresh rate test (popularized by Blur Busters) uses a moving object to visualize smoothness differences between refresh rates. Our implementation shows the UFO moving faster at higher Hz, demonstrating real-world motion benefits.