Accurately measure your display's refresh rate in real-time. Uses requestAnimationFrame timing to detect Hz with precision — no hardware tools required.
Every feature designed to accurately measure and analyze your display's refresh rate — from standard 60Hz monitors to high-end gaming displays.
Continuously measures your display refresh rate using requestAnimationFrame timing with microsecond precision.
Uses performance.now() API to calculate precise frame intervals and detect your monitor's actual refresh rate.
Real-time scrolling graph displays refresh rate stability over time, showing any fluctuations or inconsistencies.
Detects common refresh rates like 60Hz, 120Hz, 144Hz, and 240Hz with high accuracy using statistical analysis.
Tracks minimum, maximum, and average refresh rate values throughout your measurement session.
Export complete measurement data as structured JSON for analysis, sharing, or documentation purposes.
View detailed device specs including resolution, pixel ratio, GPU, and browser capabilities.
Runs entirely in your browser using web APIs. No downloads, extensions, or system permissions needed.
Refresh Rate Test uses the browser's native animation APIs to accurately measure your display's refresh rate without any external hardware or software.
Click Start to begin the refresh rate detection. The tool uses requestAnimationFrame to capture precise frame timing data.
Each frame callback is timestamped using performance.now(). The interval between frames reveals your display's refresh rate.
Watch as your refresh rate is calculated and displayed in real-time. The graph shows stability and any fluctuations over time.
Export your measurement data as JSON to review detailed statistics, compare results, or document your display specifications.
Understand what different refresh rates mean for your display experience — from standard office monitors to professional gaming displays.