How do I record laps?

Click Lap while the stopwatch is running to record a split without stopping. The lap table shows lap number, lap time, and total time. The fastest lap appears in green, the slowest in red.

Does the stopwatch keep running if I switch tabs?

Yes. The stopwatch keeps running while the tab stays open, even in the background. It also works in mobile browsers. Share the URL so others can see the same elapsed time and laps.

Can I copy or share my lap data?

Yes. Copy laps exports lap data as plain text, CSV, or Excel, or copies the best lap or a summary. Share results copies the full URL so others can open the same stopwatch state.

Online Stopwatch

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Press L to record lap

Measure elapsed time and record laps with this free online stopwatch. No app needed.

Works in any browser on desktop and mobile.

Free online stopwatch with lap timer

This free online stopwatch counts up from zero to measure elapsed time or record laps — no app needed. Start begins timing, Stop pauses, Lap records a split without stopping, Reset clears everything.

The lap table shows each lap time and total elapsed time. The fastest lap is highlighted in green, the slowest in red. Use Copy laps to export as plain text, CSV, or Excel. Share results copies the URL so others can see your stopwatch state. Use the toolbar to zoom or go fullscreen.

How to use this online stopwatch

Start begins timing, Stop pauses, Lap records a split, Reset clears. Export lap data or share the stopwatch state by URL.

Click Start to begin the stopwatch. Elapsed time is shown in hours, minutes, seconds, and hundredths.
Click Stop to pause. Click Start again to resume. Click LAP while running to record a lap time without stopping the stopwatch.
Click Reset to clear the time and all laps. Use Clear laps to remove the lap list while keeping the current elapsed time.
Use the Copy laps dropdown above the lap table to copy or export data as plain text, CSV, Excel, best lap, or summary.
Use the toolbar in the top right to zoom in, zoom out, or switch to fullscreen.

Use it for workouts, calls, experiments, presentations, or general time tracking. Works on desktop and mobile.

Related time tools

Need to set an alarm? Use the main Online Alarm Clock. Need a countdown? Try our Online Timer. Want focused work/break cycles? Use the Pomodoro Timer. Need to count clicks or events? Try the Online Counter. Want to check the current time? See the Online Clock.

Frequently asked questions

How do I record laps?: Click Lap while the stopwatch is running to record a split without stopping. The lap table shows lap number, lap time, and total time. The fastest lap appears in green, the slowest in red.
Does the stopwatch keep running if I switch tabs?: Yes. The stopwatch keeps running while the tab stays open, even in the background. It also works in mobile browsers. Share the URL so others can see the same elapsed time and laps.
Can I copy or share my lap data?: Yes. Copy laps exports lap data as plain text, CSV, or Excel, or copies the best lap or a summary. Share results copies the full URL so others can open the same stopwatch state.