Online stopwatch
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How to use the stopwatch
Press Start or the space bar to begin and the L key to record a lap. Each lap shows the split and total; the fastest split is green and the slowest red.
The stopwatch saves its state in your browser: if you close the tab or reload, it keeps counting from when you started it. "Export CSV" downloads your laps for Excel or Google Sheets.
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Frequently asked questions
It shows hundredths of a second and uses the system clock, so it does not drift.
There is no practical limit; they are stored in your browser.