Mouse Latency Test

Free Mouse Latency Test Online

Does your mouse feel slow or laggy when you click? This Mouse Latency Test measures how long it takes from your click reaching the browser to the result appearing on your screen. Click 20 times and get your average, your range, and a breakdown of where the delay comes from.

How to Use the Mouse Latency Test

1. Click or tap inside the dashed pad. The tool asks for 20 clicks.
2. Click at a relaxed pace. The pad flashes when your browser draws each click.
3. Watch the Last click, Average, and Clicks counters at the top as you go.
4. After 20 clicks, read your result and the breakdown below it.
5. Press Test Again to repeat, Copy Result to save your numbers, or Fullscreen to test in a larger view.

You can also press Reset at any point to clear the current test and start over.

What This Test Measures

The tool measures the time from your click reaching the browser to it appearing on screen. It does not include the mouse hardware itself. That means the switch, the polling rate, and the wireless link are not part of the number. Your monitor’s own processing is not included either.

Because of this, real-world latency is slightly higher than the result you see. Use the test to compare setups and settings, not as a full hardware measurement.

Understanding Your Results

After 20 clicks, you get a headline number in milliseconds with a rating label, such as “Excellent.” Below it are four detail cards.

Refresh rate: Your screen’s refresh rate, such as 60 Hz. It also shows how long one frame lasts. At 60 Hz, one frame is 17 ms.

Handling: How long your PC takes to pass the click to the page. In the sample result, this is 0.9 ms.

Waiting for frame: How long the click waits for the screen’s next redraw. In the sample, this is 5.8 ms.

Range: Your fastest and slowest clicks, such as 18–35 ms.

The “Where the Time Goes” Bar

This bar splits your latency into three parts:

• Handling the click: the time your PC needs to process it.
• Waiting for the next frame: the gap until the screen can draw.
• One screen refresh: the time the screen takes to show a frame.

In the sample result, most of the 23 ms is spent waiting for the screen, not handling the click.

The “Each Click” Chart

The chart shows one bar for each of your 20 clicks, from Click 1 to Click 20. The bars are not all the same height. Waiting varies because each click lands at a random point between screen refreshes. A click that lands just before a refresh appears fast. One that lands just after waits longer.

Why Refresh Rate Matters

Refresh rate has a large effect on this test. At 60 Hz, a click can wait up to 17 ms to appear. At 144 Hz, that wait is up to 6.9 ms. If your monitor supports a higher rate, set it in your display settings and run the test again to see the difference.

When to Use This Tool

• After changing your monitor’s refresh rate. Test before and after to see the effect.
• Comparing two PCs or browsers. Run the same test on each and compare the averages.
• Checking if lag comes from the screen. If most of your time is spent waiting for the frame, the display is the main factor.
• Reporting or tracking performance. Use Copy Result to save your numbers for later comparison.

Tips for a Reliable Test

• Click at a steady, relaxed pace. Rapid clicking is not needed.
• Close heavy apps and extra browser tabs before you start.
• Run the test two or three times and compare the averages.
• Use the same browser and display settings when comparing results.
• Try Fullscreen if you want a larger click area.

Frequently Asked Questions

Does this test measure my mouse’s hardware lag?

No. It does not include the mouse switch, polling rate, or wireless connection. It also does not include your monitor’s processing time.

Why is my click range so wide?

Each click lands at a random point between screen refreshes. Some clicks wait very little, and others wait almost a full frame. This is normal.

Why did the test show a different refresh rate than my monitor’s maximum?

The tool shows the rate your screen is currently running at. If your monitor supports a higher rate, you may need to set it in your display settings.

Can I take this test on a touch screen?

Yes. The pad accepts clicks or taps.

Why does a click flash on the pad?

The flash appears when your browser draws the click on screen. This is the moment the tool uses to measure your latency.

What does the “Excellent” label mean?

It is a rating for your measured average latency. In the sample result, a 23 ms average earned this label.