Refresh Rate Test
Your monitor's real refresh rate, measured live from frame timing. It starts the moment the page loads — give it a few seconds to settle.
Sampling frames…
Frame-to-frame consistency — a flat line is good, spikes are dropped frames.
Hz test and refresh rate test are the same thing
Hertz (Hz) is the unit refresh rate is measured in — one hertz is one redraw per second — so a Hz test and a refresh rate test are the same measurement under two names. If you arrived looking for either, the meter above is what you want.
What this measures
Refresh rate is how many times per second your display redraws its image, measured in hertz. A 60 Hz monitor redraws 60 times a second; a 144 Hz monitor 144 times. Higher rates make motion — scrolling, cursor movement, games — look smoother, because each update is a smaller step.
This test times how quickly your browser can present one frame after another and converts the median gap into hertz. The median matters: a single dropped frame doubles one interval, and an average would be dragged down by it.
Reading your result
| Reading | What it means |
|---|---|
| 59.9 – 60.1 Hz | Standard 60 Hz. The default for most monitors and laptops. |
| 74 – 75 Hz | A mild step up, common on budget gaming panels. |
| 119 – 120 Hz | High refresh. Also what recent iPhone and iPad Pro screens reach. |
| 143 – 144 Hz | The common gaming-monitor standard. |
| 165 / 240 / 360 Hz | Enthusiast displays. |
| Below 50 Hz | Something is throttling the browser — a background tab, power saving, or a heavy application. |
If the number looks too low
- Check the OS setting. Windows: Settings → System → Display → Advanced display. macOS: System Settings → Displays. A high-refresh monitor often ships set to 60 Hz.
- Check which screen the window is on. Drag the browser onto the fast monitor and reload — the measurement follows the window.
- Check the cable. High refresh at high resolution needs the bandwidth of DisplayPort or HDMI 2.1; an older cable silently falls back.
- Close heavy work. Battery saver and busy background tabs both cap frame delivery.
Refresh rate is not resolution
The two get confused constantly. Resolution is how many pixels there are; refresh rate is how often they change. They also trade against each other — a cable or GPU may manage 4K at 60 Hz or 1440p at 144 Hz, but not 4K at 144 Hz. Check the pixel side with what is my screen resolution, and the physical side with the monitor size calculator.
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Frequently asked questions
How do I check my monitor refresh rate?
The meter above is already measuring it. It times how quickly your browser is able to paint successive frames and converts that into hertz. Leave it running for a few seconds and it settles on your display's real rate.
Why does it show 59.94 Hz instead of 60?
Because that is genuinely what most 60 Hz panels run at. The 59.94 figure is inherited from NTSC broadcast timing and is still used widely. Readings like 143.9 instead of 144 have the same cause — panels rarely hit the round number exactly.
Why is my 144 Hz monitor showing 60 Hz?
Usually the display is set to 60 Hz in the operating system rather than at its maximum. On Windows check Settings, System, Display, Advanced display. It can also happen when the browser window sits on a 60 Hz secondary monitor, or when the cable or port cannot carry the higher rate at your resolution.
Is a browser measurement accurate?
It is close, but it measures how fast the browser can present frames, which is capped by the display and can be lowered by a busy system. Close other tabs and heavy applications for the cleanest reading. It will never report higher than your true refresh rate.
What refresh rate do I actually need?
For reading and office work 60 Hz is fine. For gaming, 120 Hz and above noticeably reduces motion blur, and the jump from 60 to 120 is far more obvious than 120 to 240. Some people also find higher rates easier on the eyes when scrolling.
Is a Hz test the same as a refresh rate test?
Yes — they are two names for the same measurement. Hertz is simply the unit refresh rate is expressed in, so a "Hz test" and a "refresh rate test" both answer the question of how many times per second your screen redraws. This page is both.
What is the difference between refresh rate and frame rate?
Refresh rate is how many times per second the display can redraw, fixed by the hardware. Frame rate is how many frames the software actually produces. A 144 Hz monitor fed 60 frames per second shows you 60.