12 / STOPWATCH
Stopwatch Stop
Stop the stopwatch exactly on the target time.
Stopwatch stop board
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QUICK GUIDE
How to play.
- 01
Pick a target
Choose 5 or 10 seconds, or use Custom to set any time from 1 to 99 seconds.
- 02
Start and count
Press Start and the stopwatch runs. The numbers hide after 1 second, so count in your head. Space or Enter works too.
- 03
Stop
Stop when you think the target has passed. You see how early or late you were, to a hundredth of a second.
Frequently asked questions
How precise is it?
The high-resolution browser clock measures from one press to the next. It uses the moment you press down rather than release, which reduces click delay.
Any tips for hitting 10 seconds?
Count with a steady beat or tap your foot once a second. People tend to rush the last second, so keep the beat to the end.
Are custom targets recorded?
Best records are saved only for the 5 and 10 second targets. Custom targets differ too much to compare, so they show only your best during this visit.
Where are my scores saved?
Only your smallest miss for the 5 and 10 second targets is saved in this browser, and it is never sent to a server.