Utility
Stopwatch & Countdown Timer
Accurate online stopwatch with lap splits and customizable countdown timers. Free and private.
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How to use the Stopwatch & Timer
- Select either Stopwatch or Countdown Timer mode using the top toggle buttons.
- In Stopwatch mode, click Start to begin tracking time and use Lap Split to capture lap times.
- In Countdown Timer mode, set your desired minute duration and click Start Timer.
What is an Online Stopwatch & Countdown Timer?
An online stopwatch measures elapsed time down to milliseconds, while a countdown timer alerts you when a designated time interval completes. Both utilities run client-side for ultra-precise performance.
Frequently asked questions
How precise is the stopwatch timer?
The stopwatch tracks time with millisecond precision using high-precision browser timing intervals.
Will the timer keep running if I switch browser tabs?
Yes, background timer intervals continue running as long as the browser tab stays open.
Is my timing data stored or uploaded?
No, all timing calculations and lap splits take place locally on your device.