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I/O Checkup
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Left Click Speed Test

Use your primary mouse button or trackpad. The first click starts the timer.

Using a touchscreen? Try the tap test

Duration
Feedback settings
ReadyMouse or trackpad
10sLeft click to start
Left clicks
0
Live CPS estimate
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Result history

Keep up to five completed results in this browser.

No saved results yet.

How to use the left-click speed test

Choose a duration

Try 1 or 5 seconds for a quick burst, 10 seconds for a baseline, or a longer timer to see how well you can maintain your pace.

Use your primary button

On a standard mouse, the left button is the primary button. If you swapped your buttons, use the one you normally click with. Keep the pointer inside the target while clicking.

Read your score and pace

CPS means clicks per second. Average Left CPS is your total left clicks divided by the full duration in seconds. Best burst shows your fastest one-second window, and the pace chart shows how your speed changes from start to finish.

Compare repeat runs

Save a few runs with the same duration, device, and clicking technique. Use the Mouse Button Test to check missed clicks and the Double Click Test if one press seems to register twice.