Online Stopwatch
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Press L to record lap
Free online stopwatch with lap timer
This free online stopwatch counts up from zero so you can measure elapsed time or use it as a simple lap timer—no app or account required. Start the stopwatch to begin timing. Stop pauses the stopwatch and preserves the current time. LAP records a lap time without stopping the stopwatch. Reset clears the time and lap list.
When the stopwatch is running, LAP becomes the main action so you can record split times quickly. The lap table shows each lap time and total elapsed time. The fastest lap is highlighted in green and the slowest in red. Use the Copy laps dropdown to export laps as plain text, CSV, or Excel, or copy the best lap or a summary. Share results copies the URL so you can send your stopwatch state to someone else. The timer stays fixed at the top while the lap list scrolls if you record many laps. Use the toolbar to zoom or enter fullscreen mode.
How to use this online stopwatch
Start begins timing, Stop pauses the stopwatch, LAP records a lap, and Reset clears the current session. You can also 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.
This stopwatch runs directly in your browser with no app or account required. You can start, pause, resume, and reset with one click. It works on desktop and mobile and is useful for workouts, calls, experiments, presentations, and general time tracking.
Related time tools
Need to set an alarm? Use the main Online Alarm Clock. Need a countdown? Try our Online Timer. Need to count clicks or events? Try the Online Counter. Want to check the current time? See the Online Clock.
Common uses for a stopwatch
- Timing workouts and running intervals
- Tracking speaking time during presentations
- Measuring experiment durations
- Recording lap times for training
- Timing phone calls or meetings
Popular stopwatch presets
Open the stopwatch with a preset elapsed time. These links are useful if you want to continue timing from a known duration, compare lap results, or resume a session from a specific point.
Each preset opens the stopwatch with the elapsed time already filled in, so you can press Start to continue timing from that point.
Looking for a countdown instead?
If you want to count down to zero instead of measuring elapsed time, use one of these timer pages.
Frequently asked questions
- Can I pause and record laps?
Yes. Stop pauses the stopwatch and Start resumes it. LAP records the current elapsed time as a lap without stopping. The lap table shows lap number, lap time, and total time. The fastest lap is shown in green and the slowest in red.
- Does it work when I switch tabs or on my phone?
Yes. It keeps running while the tab stays open, even if you switch tabs. It also works in mobile browsers, where you can use Start, Stop, LAP, and Reset just like on desktop. You can share the URL so someone else sees the same elapsed time and laps.
- What can I use it for? Can I copy or share my laps?
Use it to track a run, time a call, measure experiment durations, manage presentations, or record split times. Copy laps lets you export lap data as plain text, CSV, or Excel, or copy the best lap or a summary. Share results copies the full URL so others can open the same stopwatch state.