Online stopwatch
A full-screen stopwatch with laps, accurate to 1/100 of a second. Press Space to start and stop.
How to use it
- Press Start or Space.
- Press Lap (or L) to record a split without stopping.
- Press Pause to stop the clock, then Resume to continue or Reset to clear it.
Good for
- Timing runs, swim laps and intervals
- Speeches, presentations and debate rounds
- Speedcubing, games and classroom races
- Tracking how long a task really takes
Need to count down instead? Use the countdown timer. For focused work sessions, try the Pomodoro timer.
Questions people ask
How accurate is this stopwatch?
It reads your device's clock rather than counting ticks, so it doesn't drift even if you switch tabs. The display shows hundredths of a second.
What are the keyboard shortcuts?
Space starts and stops, L records a lap while running, and R resets when stopped.
Will I lose my time if I close the tab?
No. The stopwatch saves its state, so if you reload or come back later it picks up where it was, still counting if you left it running.
What's the difference between lap time and total?
Lap time is the time since the previous lap. Total is the time since you started. Your fastest lap is highlighted.