My 144Hz monitor reads 60Hz. Why?

Almost always the high refresh rate is not selected. Windows and macOS often default a new screen to 60Hz, and you have to set the higher rate manually in display settings. A cable or port that cannot carry the higher rate can also cap it, so check both if the setting is already correct.

How accurate is a browser refresh rate test?

It is close for common rates because it counts real frames the browser draws, but the browser caps drawing at the screen rate, so it reflects what your screen and browser deliver together. Background activity or an overloaded machine can pull the reading slightly low, so let it run a few seconds for a steady figure.

Why does the number wobble instead of sitting still?

Frame timing varies slightly from moment to moment, and other work on your computer can briefly steal frames, so the reading moves a little before it settles. Watch the average over a few seconds rather than a single instant, and close heavy apps for the steadiest result.

Does this test send anything to a server?

No. The whole test runs in your browser on your own device, and nothing it reads is uploaded, recorded or stored. You can prove it by disconnecting from the internet after the page loads: the test keeps working. There is no sign-up and no account.

Monitor Refresh Rate Test

Measure how many times a second your screen redraws. The test counts real frames in your browser and reports your refresh rate in hertz, so you can confirm whether your monitor is running at 60Hz, 120Hz, 144Hz or higher. Useful for checking a gaming monitor is set to its full rate. Free, no sign-up.

No app to install
100% free
Nothing is recorded
No sign-up, no email
Works on any device

Read the guide: How to Test Your Monitor Refresh Rate

Measured from real frames in your browser

Refresh rate

—Hz

Press measure and wait a few seconds

How to use it

1
Start the measurement

Press start and let the test run for a few seconds without switching tabs. It counts the frames your browser draws and works out the rate.
2
Read the hertz figure

The result settles on a number like 60, 120 or 144 hertz. That is how many times a second your screen is refreshing right now.
3
Compare against the spec

Check the reading against your monitor specification. A 144Hz screen showing 60 usually means the high rate is not switched on in your display settings.

When it comes in handy

Setting up a gaming monitor

Confirm a high-refresh screen is actually running at its rated hertz, not the 60Hz fallback the system often picks by default.

Checking a new cable or port

Some cables and ports cap the refresh rate. Measure after a change to make sure you still get the full rate your screen supports.

Diagnosing choppy motion

See whether jerky scrolling or gameplay is down to a low refresh rate rather than the graphics or the game itself.

Instant & 100% private — nothing is recorded

The test runs right here in your browser. When it needs your camera or microphone, the feed is shown to you and nothing else: never uploaded, never recorded to a server, never stored. There is no sign-up and no email wall, and most tests keep working with no connection at all.

Frequently asked questions

My 144Hz monitor reads 60Hz. Why?: Almost always the high refresh rate is not selected. Windows and macOS often default a new screen to 60Hz, and you have to set the higher rate manually in display settings. A cable or port that cannot carry the higher rate can also cap it, so check both if the setting is already correct.
How accurate is a browser refresh rate test?: It is close for common rates because it counts real frames the browser draws, but the browser caps drawing at the screen rate, so it reflects what your screen and browser deliver together. Background activity or an overloaded machine can pull the reading slightly low, so let it run a few seconds for a steady figure.
Why does the number wobble instead of sitting still?: Frame timing varies slightly from moment to moment, and other work on your computer can briefly steal frames, so the reading moves a little before it settles. Watch the average over a few seconds rather than a single instant, and close heavy apps for the steadiest result.
Does this test send anything to a server?: No. The whole test runs in your browser on your own device, and nothing it reads is uploaded, recorded or stored. You can prove it by disconnecting from the internet after the page loads: the test keeps working. There is no sign-up and no account.

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How to use it

Start the measurement

Read the hertz figure

Compare against the spec