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Browser FPS & Refresh Rate Test

Measure real-time browser FPS, frame time consistency in milliseconds, 1% low stutter detection, and display refresh rate (60Hz, 144Hz, 240Hz, 360Hz).

Real-Time Frame Rate Meter

Browser FPS & Refresh Rate Monitor

Measure real-time frame rates, frame time consistency, 1% low stutter detection, and display refresh rate (Hz).

Live FPS
60 FPS
Frame Time
16.6 ms
Estimated Display
60 Hz
1% Low (Stability)
60 FPS

Motion Blur & Judder Test Canvas

Watch the UFO targets move across the screen to test ghosting, tearing, and micro-stutters.

Speed: 480 px/s

How to Use the Browser FPS & Refresh Rate Test

  1. 1Open the test window to instantly begin sampling display frame intervals via requestAnimationFrame.
  2. 2Observe your real-time FPS, frame latency (ms), and estimated monitor Hz.
  3. 3Adjust the motion speed slider on the canvas to check for ghosting, tearing, and judder.

Key Features & Capabilities

  • High-precision FPS and millisecond frame-time calculation
  • Automatic display refresh rate detection (60Hz, 75Hz, 120Hz, 144Hz, 240Hz, 360Hz)
  • 1% low frame rate stutter calculation for gaming smoothness
  • Customizable motion blur & tracking test animation stage

Frequently Asked Questions

Why is my 144Hz monitor locked to 60 FPS in the browser?

Check Windows Display Settings > Advanced Display to ensure 144Hz is selected, and verify that Hardware Acceleration is turned ON in your browser.

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