How do I test if my monitor is 144Hz?

Simply open this tool in a modern browser; it will automatically detect and display your current active refresh rate. If it shows 60Hz on a 144Hz monitor, you likely need to update your Windows Display settings.

Can a browser test 240Hz accurately?

Yes, modern browsers using the requestAnimationFrame API can accurately track frame timing up to the system refresh rate, including 240Hz, 360Hz, and beyond.

144Hz Monitor Tester — Verify High Refresh Rate Online

📅Published: February 22, 2026👤Author: FPS Tools Team

Our precision 144Hz tester detects your monitor's actual refresh rate and compares 60Hz vs 144Hz vs Native FPS for a visible smoothness demonstration.

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Standard 60Hz detected. Check your settings if you have a high-refresh monitor.

Why Test for 144Hz?

Many users buy 144Hz or 240Hz monitors but accidentally leave them set to 60Hz in their operating system or GPU driver settings. This tool provides an instant, browser-based verification to ensure you are getting the smooth gaming experience you paid for.

How to Achieve High Refresh Rates

DisplayPort: Generally the best cable choice for high refresh rates on PC.
HDMI 2.0/2.1: Required for 144Hz+ at higher resolutions.
OS Settings: On Windows, go to Settings > System > Display > Advanced Display to select the correct refresh rate.
GPU Driver: Ensure your NVIDIA or AMD control panel is set to the highest supported refresh rate.

What This Tool Measures

This tool uses the requestAnimationFrame API to measure exactly how many frames your browser is rendering per second. While browser engines may have slight overhead, this is a highly accurate representation of your display's active refresh rate.

Frequently Asked Questions

Why is my 144Hz monitor showing 60Hz?

Common reasons include using an older HDMI cable, being limited by integrated graphics settings, or simply not selecting the higher rate in Windows Advanced Display settings.

Does this work for 240Hz and 360Hz?

Yes. This tester detects and displays any refresh rate supported by your hardware and browser, including ultra-high 240Hz, 360Hz, and even 540Hz displays.