Online chronometer Online chronometer

Online chronometer

Start timing immediately, record laps and export the splits.

Output

Ready to startMilliseconds
00
Hours
00
Minutes
00
Seconds
000
Milliseconds
00:00:00.000
Laps
0
Last lap
-
Best lap
-

Focus the stopwatch area: Space starts or pauses, L records a lap. Shortcuts do not override inputs, links or buttons. The display shows milliseconds, not laboratory timing accuracy.

Laps

Lap times will appear here after pressing the button.

Use an online chronometer

Start a stopwatch in the browser, view milliseconds and record lap times.

The chronometer is useful for quick measurements, manual QA, workouts, study exercises and repeated tasks.

Quick start

Measure elapsed time, record lap splits and export the results.

  1. Start the stopwatch
  2. Record laps or pause the clock
  3. Export the lap table
✓ The tool runs directly in the browser and is ready for quick checks without installing software.
✓ Input can be cleared and recalculated immediately, which is useful for repeated small tasks.
✓ Use fullscreen mode when you need more space for long text, structured data or large result blocks.
✓ Copy buttons are available on generated output so results can be reused in code, documents or support chats.
✓ Most operations are deterministic: the same input and options produce the same output.
✓ For sensitive content, prefer local browser tools and review the result before sharing it further.

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