jarvisbox

分圈秒表

完整记录单圈与分段的秒表,追踪分段、最佳单圈与平均配速。

00:00.00
Lap —:——.——

How to use

  1. Press "Start" to begin the stopwatch.
  2. Press "Lap" to record a split — the lap time and cumulative time are shown in the table.
  3. Press "Start" again to pause, or "Reset" to clear everything.

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常见问题

Is the lap stopwatch free?
Yes, completely free with no signup and no usage limits.
Does my data leave my device?
No. The stopwatch runs entirely in your browser. Nothing is sent to any server.
Does it work on mobile?
Yes. The tool is mobile-first and works on iPhone Safari and Android Chrome.

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