Stopwatch
High precision stopwatch with lap times, split tracking, and smooth millisecond display. Free, no signup, runs in your browser.
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Frequently asked questions
- How accurate?
- Uses performance.now() for sub-millisecond precision and requestAnimationFrame for smooth display.
- Lap button?
- Records lap time (since previous lap) and split time (total elapsed).
- Keeps time across tabs?
- Yes. Elapsed time calculated from real timestamps, no skip or double-count.