Refresh Rate Test for Your Monitor
This refresh rate test measures how many times per second your screen redraws the image, shown in Hertz (Hz), so you can confirm your monitor is really running at the speed you paid for. It detects your rate automatically, then plays visual animations that make the difference between 60Hz, 120Hz, and higher rates easy to see with your own eyes.
It is built for gamers checking a new high refresh rate monitor, content creators verifying display smoothness, and anyone who suspects their screen is stuck at 60Hz when it should be faster. No download, no sign-up — open the page and the test starts measuring.
How to Test Your Refresh Rate
Check the detected Hz
When the page loads, the tool measures your browser's frame rate and shows your detected Hz. If the number looks wrong — for example 60Hz on a 144Hz monitor — click Change to pick the correct rate by hand.
Choose a test mode
Pick from five modes. Comparison Arena (recommended) shows several simulated rates next to your native rate; the others isolate frame drops, motion clarity, and frame persistence.
Start the test
Click Start Test or press Enter. The animation begins at once while the HUD shows your Hz, live FPS, and dropped-frame count.
Go fullscreen for accuracy
Press F for fullscreen. This removes browser UI and gives the animation top rendering priority for the most reliable reading. Increase the speed to make differences and frame drops more obvious.
Features
Automatic Hz Detection
Measures your browser's real frame rate on load, then snaps to a common rate such as 60, 120, 144, or 240Hz when the reading is close.
Five Test Modes
Comparison Arena, Frame Counter, Orbital Motion, Precision Ruler, and Strobe Trail — each reveals refresh-rate differences in a different way.
Real-Time Statistics
A HUD tracks your Hz, current FPS, and detected frame drops live, with the FPS value colored green, yellow, or red against your target.
Frame Time Graph
Press G to plot the milliseconds between frames. A steady line means consistent delivery; red spikes mark stutters and dropped frames.
Speed Control
Dial the animation speed from 1 to 20. Faster motion makes the gap between refresh rates — and any frame drops — far easier to spot.
Fullscreen Mode
Press F to test fullscreen with no browser UI, giving the animation the highest rendering priority for the most accurate result.
Keyboard Shortcuts
Pause, switch modes, change speed, toggle the graph, reset, and go fullscreen straight from the keyboard without hunting for buttons.
Runs in Your Browser
Everything happens client-side with no installs and no account. Your readings never leave your device.
The Five Test Modes
Comparison Arena
The clearest way to see refresh-rate differences. Stacked lanes move dots at simulated rates next to your native rate — the higher the rate, the smoother the dot looks. Rates above your monitor cannot be simulated and are dimmed.
Frame Counter
Large numbered boxes scroll past. Consecutive numbers (1, 2, 3) mean every frame is rendering; skipped numbers (1, 3, 5) point to dropped frames.
Orbital Motion
Dots orbit a central point in different directions, testing motion smoothness all around — not just left-to-right. Smoother circles mean a higher refresh rate.
Precision Ruler
A numbered ruler slides across the screen. On a fast display you can still read the markings while they move; on a slower one they blur.
Strobe Trail
A single dot leaves ghost images behind it. The more dots you see in the trail, the more frames your monitor is rendering.
Frequently Asked Questions
What is my monitor's refresh rate?
Open the test and the detected Hz appears as soon as measurement finishes. The tool reads how often your browser renders new frames, which matches your monitor's refresh rate when everything is set up correctly. Common values are 60Hz (standard), 144Hz (gaming), and 240Hz (competitive).
How do I check my refresh rate here?
Just load the page — detection runs automatically. To see the rate in action, choose a test mode, click Start Test, and press F for fullscreen. The HUD then shows your Hz, live FPS, and any dropped frames as the animation runs.
What is refresh rate (Hz)?
Refresh rate is how many times per second your monitor redraws the image, measured in Hertz. A 60Hz screen updates 60 times a second; a 144Hz screen updates 144 times. Higher rates make motion — scrolling, gaming, fast video — look noticeably smoother.
Why does it detect 60Hz when I have a 144Hz monitor?
Usually the rate is being capped before it reaches the browser. Common causes are: the monitor is set to 60Hz in Windows Display Settings, a power-saving or efficiency mode is throttling frames, the tab is in the background, hardware acceleration is off, or an HDMI cable cannot carry the higher rate. Try fullscreen and check Windows Settings, then click Change to set the rate manually if needed.
How accurate is the Hz detection?
The detector collects roughly 180 frame-time samples, trims the slowest and fastest outliers, and snaps to the nearest common rate when the reading is within about 5%. With hardware acceleration on and the tab in focus it tracks your real refresh rate closely. If anything throttles the browser, the result reflects that limited rate rather than the panel's maximum.
What is the difference between refresh rate and FPS?
Refresh rate (Hz) is how fast your monitor can show new frames; FPS is how many frames your system actually delivers each second. The HUD shows both: when FPS sits near your Hz the value is green, and it turns yellow then red as it falls below about 95% and 80% of your target, signalling frame drops.
Does this test my monitor or my computer?
Mostly your computer and browser. The test measures how well frames are delivered to the monitor, so if your system can't render fast enough you won't see the full benefit of a high refresh rate panel. It can only display up to your monitor's actual rate — the simulated lower rates are made by skipping frames, not by exceeding your display.
Is my data saved or sent anywhere?
No. Every test runs entirely in your browser. No information about your monitor, refresh rate, or results is collected or transmitted to any server.
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