FPS Perception Test
Find the highest frame rate your eyes can actually tell apart — a guided yes/no test that measures your personal perception ceiling and answers whether a higher-refresh monitor is worth it.
Measuring your display…
Can you see a difference between the two panels?
Take as long as you need — the panels keep moving until you answer.
Your result
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Honest note: perception varies with motion type, attention and age. One session is an estimate, not a measurement — re-run the test to check how stable your number is.
How to Take the FPS Perception Test
- How to take the test: press Start, wait while your display's real rate is measured (~2.5 s), then watch two side-by-side panels running the same scene at two different frame rates. Answer each question honestly — the rates are never shown on purpose. Use the Y / N keys or the buttons; steps are self-paced. The result is an estimate, not a measurement.
- What to watch for: the trail of dots behind the orb — the higher panel lays down dots more often. The optional flicker band (default off) makes the two rates even easier to compare; enable it from the toggle. Don't switch tabs mid-run: a hidden tab pauses rendering and the run is discarded for a clean result.
Use cases
Five real situations where a quick, honest perception-ceiling number helps:
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My 180 Hz monitor — do I even perceive it?
High-Hz panel owners run the guided ladder to find out whether their panel's high end is 'worth it' to their eyes, with a verdict and a shareable scorecard.
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Should I buy a 144/165 Hz panel?
Compare your perception ceiling against the rates on your shortlist so you can weight the upgrade against what your eyes will actually perceive.
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What's my ceiling compared to a friend's?
Get a single, shareable number — the ceiling plus the evidence pair — and compare it against friends or numbers quoted on forums.
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My number looks odd — re-run it
Re-run the whole test, or redo a single step mid-run, to check how stable your estimate is.
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The test says I'm capped — why?
On a 60 Hz display the test explains that the display, not your eyes, set the limit — and points you to the Refresh Rate Test for the cause.
Frequently asked questions
- What does this test actually measure?
- It measures you, not your hardware: the highest frame rate your eyes can still tell apart from a lower one, on the motion we show. It is an estimate from one guided session — not a laboratory psychophysical measurement.
- Why is the test capped at my display's refresh rate?
- A browser cannot present more frames per second than your display refreshes, so the test never shows a rate your screen can't render. We measure your display's effective rate first and cap the grid at it. If the cap looks lower than your panel's rated rate, run the Refresh Rate Test app.
- Why does my result differ from my friend's on the same monitor?
- Frame-rate perception varies with attention, the type of motion, age and even time of day. Different sessions — even back to back — can land on adjacent grid values; that is expected and is why we report an estimate, not a measurement.
- Do I need a 144/240 Hz monitor to take the test?
- No. The grid adapts to your display: on a 60 Hz display the test explains that the display itself is the limit and points you to the Refresh Rate Test. You only get the full ladder on a display presenting 90 Hz or more.
- Can this measure my frame rate in games?
- No. Browsers cannot read game frame times. For in-game numbers use desktop tools like PresentMon or MSI Afterburner. This test measures your perception of frame-rate differences with rendered motion.