Stopwatch
9 toolsA stopwatch with lap timing.
Runs in your browser — your files and text stay on your device
A simple stopwatch with lap timing for workouts, presentations and experiments. Start, record laps and stop, then read each split. It runs in your browser, so keep the tab open while timing.
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How to use this tool
- 1Click Start to begin timing.
- 2Click Lap to record a split without stopping.
- 3Pause and Resume as needed, or Reset to clear everything.
Frequently asked questions
How precise is this stopwatch?
It updates every 10 milliseconds, precise enough for most everyday timing needs.
Does it keep running if I close the tab?
No — timing state lives only in the page and resets on reload.