Test your monitor's actual refresh rate online — 60Hz, 120Hz, 144Hz, and beyond. Free, instant, no download.
Click "Start Test" and don't switch tabs during the measurement
⚠️ This is a software-based estimate using your browser's frame timing — it's generally accurate but can be affected by background apps, browser throttling, or your OS's power-saving settings. For a hardware-verified reading, check your monitor's on-screen display (OSD) menu or your GPU control panel.
This tool estimates your monitor's actual refresh rate by measuring how quickly your browser renders frames over a short test period. It's a useful sanity check to confirm a high-refresh-rate monitor (120Hz, 144Hz, 165Hz, etc.) is actually running at its rated speed rather than defaulting to 60Hz. The measurement is software-based, using your browser's frame timing — generally accurate, but background apps, browser tab throttling, or OS power settings can affect the result.
It's generally accurate for common refresh rates, but it's a software estimate based on browser frame timing — not a hardware-verified reading. For guaranteed accuracy, check your monitor's on-screen display menu or your graphics card's control panel.
Background apps, other browser tabs, or OS power-saving settings can interfere with frame timing during the test. Try closing other tabs/apps and running the test again.