Online Stopwatch
Time anything to 0.01 seconds and record laps.
00:00.00
How to use
- Press Start to run the clock and press it again to stop.
- Press Lap to record both the time since the previous lap and the total time since the start.
- Reset clears the time and all laps.
When to use it
Use it for running laps, rehearsing a presentation, timing how long one problem takes, or measuring each step of a recipe or an experiment. If you need a countdown instead, use the online timer.
Accuracy
The digits on screen refresh about 27 times a second, but the time itself is calculated from your device clock, not from screen refreshes. It does not drift if you switch to another tab and come back.