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Stopwatch with Lap Times
High-precision stopwatch with lap tracking, best/worst lap highlighting, and CSV export.
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About this tool
A high-precision stopwatch powered by performance.now() that records individual lap splits and cumulative elapsed time. The lap table highlights your fastest lap in green and slowest in red so you can spot trends at a glance. An animated canvas clock face tracks the elapsed seconds visually. Export all lap times as a CSV file for further analysis.
How to use
- 1 Click 'Start' to begin the stopwatch — the timer and canvas clock hand start immediately.
- 2 Click 'Lap' at any point to record a split; the table updates with the lap number, split time, and total elapsed time.
- 3 The fastest lap row is highlighted green and the slowest is highlighted red automatically.
- 4 Click 'Export CSV' to download all lap data, or 'Reset' to clear the timer and lap table.
Frequently Asked Questions
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