JoliTools

Stopwatch

Precise online stopwatch with lap times

00:00.000

Press Start to begin timing. Use Lap to record split times.

Millisecond precision using your browser clock. Runs entirely on this device.

About this tool

Timing a run, a study session, or a recipe step needs a stopwatch that is always at hand. This one lives in your browser, no app install, no account.

Millisecond precision, unlimited laps with split analysis, and clear start/stop/reset controls make it genuinely useful for sports, productivity and experiments.

How to use the stopwatch

  1. 1Click Start to begin timing.
  2. 2Record laps with the Lap button.
  3. 3Stop and review your splits.
  4. 4Reset to start over.

Frequently asked questions

It displays milliseconds and uses requestAnimationFrame for smooth, accurate updates.

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