Reaction box
Click to arm, wait, click on coral
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Click to arm the test
Mouse Click Latency Test
This mouse click latency test combines your reflexes with your mouse and system delay. Arm the test with one click, wait for the colour change, then click as fast as you can. Five rounds give an average.
Session results
- Average
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- Best
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- Round
- 0 / 5
Get a clean latency reading
1. Arm and wait
Click once to arm. The delay before coral is random between 1.5 and 4 seconds, so you cannot anticipate it.
2. Click on colour, not on guess
An early click resets the round. Keep your finger resting on the button and react to the colour only.
3. Compare mice on the same screen
Reaction time is yours; the difference between two mice on the same monitor is the mouse latency.
What the latency test measures
Reaction plus input chain
The number is your reflex time plus mouse, USB, operating system and display delay combined.
Random delay
No pattern to learn, so the average reflects real readiness instead of rhythm.
Five-round average
Single reactions vary by 50 ms or more. The average and best are what to track.
Early-click protection
Anticipated clicks are flagged and the round restarts, keeping the average honest.
Latency terms you will meet
- Click latency
- Time from the switch closing to the computer receiving the click. 1 to 20 ms depending on the mouse.
- Reaction time
- Time from a visual cue to your muscle response. 200 to 250 ms is typical for adults.
- Input lag
- End-to-end delay including the display. Reducing any link in the chain lowers it.
- Debounce delay
- A firmware wait before a click is accepted, added to filter switch bounce. Lower settings reduce latency.
Latency and reaction questions
What is a good reaction time here?
Under 250 ms is good, under 200 ms is excellent. Professional players average around 150 to 180 ms.
Can this measure my mouse's latency alone?
Not in isolation. Compare two mice on the same system; the difference in your averages is the hardware difference.
Does my monitor matter?
Yes. A 60 Hz display adds up to 16 ms before you even see the colour. A 240 Hz display adds about 4 ms.
Why is my first round slow?
You were not ready. Discard it mentally and look at the best and average over five rounds.
Lower your latency
Average over 300 ms
Close background apps, disable browser extensions and plug the mouse in directly. Then retest rested.
Huge variation between rounds
You are anticipating. Relax and react only to the colour; early clicks are already filtered.
Wireless feels slower
Check for interference with the polling rate test; a stable 1000 Hz wireless link adds under 1 ms.