Refresh Rate Tester
Click start to instantly detect your screen refresh rate in real time.
What Does Refresh Rate Tester Check?
Refresh Rate Tester is a browser-based tool that measures how smoothly your display updates per second, commonly known as Hertz (Hz). It detects your monitor’s actual refresh rate using the Screen Refresh API and high-precision animation frame timing methods in the browser. This helps identify whether your display is running at 60Hz, 120Hz, 144Hz, or higher under real conditions instead of just manufacturer settings. It also checks frame consistency, motion stability, and visual rendering smoothness across your system.
Supported Devices
This tool works on all modern devices that support web browsers and real-time rendering. It is compatible with desktop monitors, gaming laptops, ultrawide displays, tablets, and smartphones. It works across major systems like Windows, macOS, Linux, Android, and iOS. It also supports gaming monitors from brands like ASUS, Acer, MSI, LG, Samsung, and Dell. As long as your device supports browser-based rendering and animation frames, it can accurately display your refresh performance.
How To Use This Tool
Using Refresh Rate Tester is simple and does not require any installation. Open the tool in your browser and click the start button to begin the test. The system will immediately analyze screen refresh cycles using animation timing methods and display live results. Keep the window active for a few seconds to stabilize readings. Make sure no heavy background apps are interfering for the most accurate output. The result will automatically update in real time.
Understanding Your Results
Your results show how many times your screen refreshes per second in Hertz (Hz). A stable 60Hz reading is standard for basic displays, while 120Hz, 144Hz, or 240Hz indicates smoother motion, especially for gaming and scrolling. If the number fluctuates, it may indicate performance limitations, power-saving modes, or browser constraints. Higher and stable values mean smoother visuals and better responsiveness, while inconsistent results may suggest display or system optimization issues.
Frequently Asked Questions
Why does my refresh rate change while testing?
This usually happens due to system power settings or background apps affecting performance. Some devices also dynamically adjust refresh rate to save battery.
Q2: Can this tool detect 144Hz or 240Hz monitors?
Yes, it can detect high refresh rate displays if your system and browser support consistent frame rendering. The accuracy depends on stable system performance.
Q3: Why am I only seeing 60Hz on my high refresh monitor?
Your display may be set to 60Hz in system settings or limited by HDMI/graphics configuration. Check your display settings to enable higher refresh rates.
Q4: Does browser affect refresh rate results?
Yes, browsers can slightly influence readings due to rendering limitations. However, modern browsers provide fairly accurate estimates using animation frames.
Q5: Is this the same as FPS testing?
No, refresh rate measures your screen capability, while FPS measures graphics output from applications. Both are related but not identical metrics.
Q6: Do I need any software to use this tool?
No installation is required. It runs completely in your browser using built-in web APIs for real-time measurement.
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You might also like Pixel Checker, FPS Tester, and Motion Blur Test for deeper display performance analysis.