Online Stopwatch
Start, stop and record laps with hundredth-of-a-second precision. Press the space bar to start or stop.
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How to use the stopwatch
Press Start (or the space bar) to begin timing. Press Lap to record a split without stopping. The lap table shows each lap time and the total time, with your fastest and slowest laps highlighted.
The stopwatch is perfect for running, swimming, speeches, experiments and games. Need to count down instead? Try the online timer.
Frequently asked questions
How accurate is the stopwatch?+
It uses your browser's high-resolution performance clock and displays hundredths of a second.
Is there a keyboard shortcut?+
Yes. Press the space bar to start and stop the stopwatch.