Screen Refresh Rate & Hz Benchmark
Display DiagnosticsAccurately measure your monitor's true refresh rate (Hz), frame time stability, and frame-pacing smoothness with UFO motion.
Screen Refresh Rate & Hz Benchmark
Real-time display frequency measurement, frame-time latency stability, and visual UFO motion stutter testing.
Frame-Pacing & Motion Blur Simulator
Compare motion smoothness across native refresh rate, 1/2 rate, and 1/4 rate.
Real-Time Frame Time Stability (ms)
Dashed line represents theoretical 16.67 ms frame interval. Spikes indicate frame-pacing drops.
5-Second Stability Benchmark Suite
Locks a 5000ms sampling window to compute an exact panel pacing stability score and jitter profile.
What is Screen Refresh Rate & Hz Benchmark?
Benchmark your monitor's true hardware refresh rate in Hertz (Hz) with sub-millisecond precision using high-frequency requestAnimationFrame timing loops. Inspect visual frame-pacing smoothness, identify micro-stutters and frame drops, and analyze real-time frame time variance (ms) directly in your web browser.
How to use Screen Refresh Rate & Hz Benchmark
3 simple steps to complete your task directly in your browser:
Keep Browser Window Active
Keep this tab focused and in the foreground so your operating system grants unrestricted GPU refresh cycles.
Real-Time Hz Measurement
Watch the live frequency counter as it calculates true display cycles over a continuous rolling 120-frame sampling window.
Inspect Visual UFO Motion
Track moving UFO lanes running at native display Hz, 1/2 rate, and 1/4 rate to evaluate ghosting, motion blur, and perceived smoothness.
Common uses
- PC & Console Gamers: Verify that Windows or macOS display settings are actually configured for 144Hz, 165Hz, or 240Hz instead of defaulting to 60Hz.
- Hardware Reviewers & Testers: Measure panel frame-time pacing, jitter, and VRR (G-Sync / FreeSync) stability.
- Web & Game Developers: Audit animation smoothness and profile requestAnimationFrame render loop performance.
- Multi-Monitor Setups: Detect whether dragging a window between screens downclocks refresh rates to the slowest monitor.
Why choose VersaTools
100% private
Your files are processed inside your browser and are never uploaded to a server.
Free, no account
No sign-up, no watermark, no paywalled “premium” tier. Just open a tool and use it.
Instant
No upload, no queue, no server round-trip — work starts the moment you drop a file.
Runs in your browser
Built on open web standards. Works on any modern desktop browser, nothing to install.
No upload size caps
Nothing leaves your device, so there’s no server file-size limit — only your machine’s memory.
Yours to keep
Results download straight to your device in clean, standard file formats.