Monitor Refresh Rate Test
Instantly detect whether your display is running at 60Hz, 144Hz, 240Hz, or higher — no software needed.
💡 What refresh rate is my monitor running at?
Click Start Test and your browser will measure the time between screen refreshes using requestAnimationFrame. After a few seconds you'll see your monitor's actual refresh rate in Hz. Common results are 60Hz (standard), 120Hz, 144Hz, 165Hz, and 240Hz.
How the refresh rate test works
Your browser's requestAnimationFrame API fires a callback every time the screen is about to paint. By measuring the time interval between these callbacks, we can calculate how many frames per second your display is rendering — which equals your refresh rate in Hz. Results are averaged over 60 frames to filter out jitter, and snapped to the nearest standard rate (60, 75, 120, 144, 165, 240, 360Hz) when within ±3Hz.
Understanding your result
60 Hz — Standard. Suitable for everyday tasks, office work, and casual gaming.
75–120 Hz — Mid-range. Noticeably smoother than 60Hz. Good for general gaming.
144–165 Hz — High refresh. Competitive gaming territory. Most esports players target 144Hz minimum.
240 Hz and above — Ultra-high refresh. Used by professional esports players where every millisecond counts.
Why is my result lower than expected?
If your monitor supports 144Hz but the test shows 60Hz, check these settings: Windows Display Settings → Advanced display → Choose a refresh rate. Also verify your cable — HDMI 1.4 caps at 60Hz at 1080p, while DisplayPort and HDMI 2.0+ support higher rates. Some monitors also require the refresh rate to be set manually in the OSD menu.
Frequently asked questions
- How accurate is this test?
- Very accurate for most monitors. The test averages 60 frames of timing data and discards outliers. Results are typically within 1–2Hz of your monitor's true refresh rate. Chrome and Edge tend to give the most consistent results.
- Does a higher refresh rate make a difference?
- Yes, noticeably so up to about 240Hz. Moving from 60Hz to 144Hz is one of the biggest perceptible upgrades in gaming — motion appears smoother, input lag feels lower, and fast-moving objects are easier to track. Beyond 240Hz the gains diminish for most users.
- What refresh rate do I need for gaming?
- For casual and single-player gaming, 60Hz is perfectly adequate. Competitive multiplayer players typically prefer 144Hz as a minimum. Professional esports players often use 240Hz or 360Hz monitors to reduce motion blur and perceived input lag.
- Does VSync affect the test result?
- Yes. With VSync enabled, your frame rate is capped to your refresh rate, so the test will still read your monitor's Hz correctly. With VSync off, your GPU may render more frames than the monitor can display, but the test measures the display's physical refresh, not GPU output.
- My monitor supports 144Hz but the test shows 60Hz — why?
- The most common cause is the cable. HDMI 1.4 is limited to 60Hz at 1440p/1080p. Use DisplayPort or HDMI 2.0/2.1 for 144Hz and above. Also check Windows Display Settings → Advanced display → Refresh rate and set it to your monitor's maximum.
