Online screen FPS test
Screen FPS Test - Test Screen Frame Rate Online
Use this screen FPS test to check how smoothly your browser and display render motion. The tool measures current FPS, average FPS, 1% low FPS, frame time, and an estimated refresh rate so you can spot caps, stutter, or uneven screen motion.
Real-time screen measurement
Check screen FPS and motion stability
Press start to run a 12 second screen FPS test.
Current FPS
Average FPS
1% Low FPS
Estimated Hz
Frame time
This is a browser screen FPS test, not a GPU game benchmark. It checks the frame loop your browser can deliver to the visible screen.
What this screen test answers
A screen FPS test should answer more than one question
Many people search for a screen FPS test because motion feels wrong, even when the display specification says 120Hz, 144Hz, or 240Hz. The useful answer is not only a single FPS number. You need to know whether the browser reaches the expected screen refresh path, whether frame time is stable, and whether low FPS dips explain visible stutter.
Screen FPS
The current rendering rate sent through the visible browser window.
Estimated Hz
A practical estimate of the screen refresh cadence seen by the browser.
Frame pacing
The consistency between frames, which is often what makes motion feel smooth or uneven.
Repeatable setup
Make the screen FPS result comparable
A screen frame rate test is most useful when you control the environment. Browser energy saver, low power mode, thermal throttling, inactive tabs, external monitor docks, and screen capture tools can all change the result. Use the same setup when comparing laptops, monitors, browsers, or cables.
Keep the browser tab active and visible while the screen FPS test is running.
Use the display mode you actually use for gaming, video, streaming, or daily work.
Close heavy tabs, downloads, overlays, and screen recording tools before comparing results.
Run the same screen FPS test twice if you are checking a new monitor, cable, dock, or browser.
If your screen FPS stays near 60
A 60 FPS result on a high-refresh screen usually means one part of the display path is capped. Check the operating system refresh setting, browser energy settings, external monitor cable, docking station, and laptop power mode. Some mobile browsers and some secondary displays also cap animation timing to save power.
If the average looks good but motion stutters
Look at low FPS and frame time instead of the average alone. A screen FPS test can show a strong average while short frame-time spikes still create visible stutter. Run the test with fewer tabs open and compare results before and after changing browser, display, or power settings.
When a screen FPS test is the right tool
Use this page when you care about visible screen motion instead of a game-specific benchmark. It is useful after changing a display cable, moving a browser window to a second monitor, switching a laptop between battery and charger, or checking whether a new high-refresh screen is actually being used by the browser. If the result changes after one of those actions, the screen FPS test has helped isolate the display path rather than the game, video file, or web page you were originally looking at.
FAQ
Common questions about screen FPS testing
Is screen FPS the same as refresh rate?
They are related but not identical. Screen FPS is the rate the browser is rendering frames. Refresh rate is how often the display can update. A 144Hz screen can only show smoother motion when the browser and system deliver frames at a matching cadence.
Can this test prove my monitor is 144Hz?
It can confirm the browser is seeing a high-refresh animation cadence, which is useful for checking the display path. It is not a lab-grade hardware certification tool, but it is good for finding common 60Hz caps and unstable browser motion.
Why does the result change between runs?
Background load, battery mode, browser throttling, thermals, and active tabs can change frame timing. Use a repeatable setup and compare averages, 1% low FPS, and frame time instead of judging one single reading.
Does the screen FPS test work on phones?
Yes, but mobile browsers can cap frame rate to save battery or reduce heat. For phone-specific checks, compare this page with the dedicated phone FPS test.