Free online tool

Stopwatch

Track precise elapsed time without accumulating drift from the screen refresh rate.

Timing data stays local

Use Stopwatch

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What this tool does

Measure elapsed time and laps with fast controls and exportable statistics.

Method

Elapsed and lap times are calculated from monotonic timestamps; rendering only displays the measured state and never acts as the clock.

Example

Record ten laps and compare the fastest, slowest, and average lap time.

Inputs and outputs

You provideYou receive
  • Start, pause, and reset
  • Lap
  • Display precision
  • Optional label
  • Elapsed time
  • Lap list
  • Fastest, slowest, and average laps
  • Export

Privacy and data use

Timing data stays local. Elapsed time, labels, and laps are processed in the browser.

Read the full privacy policy.

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Common questions

Is it free?

Yes. The core tool and its standard result or export are free to use.

Do I need an account?

No for the core utility. An account or private management token is requested only for capabilities that must persist, such as editable dynamic QR links.

Can I trust the result?

The method and assumptions are visible above. Time-sensitive tools name their sources and freshness; important financial, safety, legal, or operational decisions should be verified with the primary authority.