Online Stopwatch
Precision timing tool
Use cases
A stopwatch suits sports timing, classroom activities and quick task records. If you need a reminder at a set time, try the online alarm instead.
About the stopwatch
The online stopwatch is a precise timing tool with start, pause, lap and reset. Press "Start" to begin timing, "Lap" to record the current time, "Pause" to stop and "Reset" to clear all data. It fits sports training, study timing, work timing and more.
FAQ
Q：How do I record laps on the online stopwatch?
A：Tap the "Lap" button while the timer is running to record the current segment. Tapping it repeatedly stores each lap in order so you can compare segments — handy for running and workouts.
Q：What is the difference between a stopwatch and a countdown timer?
A：A stopwatch measures elapsed time (from start to stop), while a countdown counts down to a future alarm time. If you need a reminder that rings at a set time, use the online alarm instead.
Q：Is the millisecond stopwatch accurate?
A：It uses the browser's high-resolution timestamp, offering millisecond precision — suitable for sports, exams and experiments that need precise timing.
Q：How do I use a stopwatch for training?
A：Press Start to record total time, tap Lap after each set to save split times, then compare the total and each lap at the end to track your pacing.