Stopwatch & Lap Timer
Precision millisecond timing with split lap tracking
00:00:00.00
Recorded Laps
How to Use the Online Stopwatch
- Click “Start” to initiate the timer in real-time with millisecond precision.
- Click “Lap” while running to mark split durations without stopping the timer.
- Click “Pause” at any time to temporarily freeze the counter.
- Click “Reset” to clear all tracked intervals and return the timer to zero.
Frequently Asked Questions (FAQ)
How accurate is this online stopwatch?
The stopwatch measures time utilizing browser system timestamps (`Date.now()`), ensuring accuracy down to 10 milliseconds (1/100th of a second).
Does the stopwatch keep running if I switch tabs?
Yes, because the duration is calculated from the elapsed time delta rather than simple interval counting, switching browser tabs will not affect the precision or cause lag.