Online Stopwatch
Precise online stopwatch with lap times. Track workouts, cooking, time activities. Browser-based, no install.
00:00:00.000
What is an Online Stopwatch?
An online stopwatch measures elapsed time with millisecond precision. Unlike physical stopwatches, runs in any browser without install. Includes lap functionality for tracking interval times. Useful for: workouts (HIIT, tabata), cooking, running pace, sports timing, productivity measurement, speed reading practice.
How to use
- Click Start — Timer begins from 00:00:00.000
- Click Lap — Records current time, restarts for next interval
- Click Pause — Stops timer (can resume)
- Click Reset — Returns to zero
Tips
- Use lap for interval workouts — record each set time
- Browser tab can be switched without losing time
- Multiple windows = independent stopwatches
- Best precision in modern browsers (Chrome, Firefox, Safari)
FAQs
How accurate?
Millisecond precision (10ms intervals). More than enough for sports, cooking, productivity tracking.
Will it run if I close the tab?
No — closing the tab stops the timer. Page must stay open to keep counting.
Can I save lap times?
Copy from on-screen list. Not auto-saved between sessions.
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