Monitor Refresh Rate Checker

Key Features

• True Hz Detection: Calculates exact millisecond delays to find your monitor's true refresh rate.
• Smoothness Visualizer: Animate objects at 30 FPS, 60 FPS, and Max Hz to see frame differences.
• Readability Test: Fast-moving text block to physically test display motion clarity.
• Stutter Detector: Monitors micro-stutters and highlights browser lag in real-time.
• Black Smearing Test: Pure black background toggle to test OLED and VA panels for dark ghosting.
• No Installation: 100% web-based hardware testing.

How do I use it?

It's simple: Step 1: Open the page and do not switch tabs. Step 2: Wait 2 seconds for the engine to calibrate. Step 3: View your exact Hz and use the toggles to test your panel.

How do I read the results?

The main number displays your stable refresh rate. Watch the Dropped Frames counter to check for system lag, and look at the moving text to see if your monitor suffers from motion blur.

Is this tool free?

Yes, this diagnostic tool is 100% Free. There are no limits on how long you can run the test. No sign-up required, and no third-party software to download.

What devices are supported?

This tool supports all modern displays. It works flawlessly on Desktop Monitors, Gaming Laptops, and Mobile Phones (including 90Hz/120Hz displays on Android and iOS).

Privacy & Security

Your privacy is our priority. Since this tool runs entirely Client-Side (in your browser), your hardware performance data is never uploaded or saved to our servers.