Stopwatch

Productivity

Precise time tracking with laps

The online Stopwatch measures elapsed time with precision, making it useful for sports timing, race tracking, cooking, presentations, and any activity where you need to know exactly how long something takes.

Press Start to begin counting upward from zero. The display updates in real time, showing hours, minutes, seconds, and milliseconds. You can record lap times to mark intermediate points without stopping the main clock, which is ideal for tracking split times during races or intervals during a workout.

All timing happens locally in your browser using JavaScript intervals. The stopwatch continues to run if you scroll the page or interact with other elements, and you can pause, resume, or reset at any time.

How to Use

1. Press the Start button to begin timing from zero.
2. The elapsed time displays in real time with hours, minutes, seconds, and milliseconds.
3. Press the Lap button to record a split time without stopping the stopwatch.
4. Press Pause to stop the clock temporarily while keeping your elapsed time.
5. Press Start again to resume timing from where you paused.
6. Press Reset to clear the stopwatch and all recorded laps back to zero.

Features

• Precise timing with millisecond display
• Lap time recording for split tracking
• Pause and resume without losing elapsed time
• One-click reset to zero
• Lap history displayed below the main timer
• Clean, minimal interface focused on readability
• Works on mobile, tablet, and desktop

Frequently Asked Questions

How accurate is the stopwatch?

The stopwatch uses browser-based JavaScript intervals, which are accurate to within a few milliseconds. For professional sports timing, dedicated hardware is recommended.

Is there a maximum time the stopwatch can run?

There is no practical upper limit. The stopwatch will continue running as long as your browser tab remains open.

Can I export my lap times?

Currently lap times are displayed on screen during the session. You can manually copy them or take a screenshot for your records.

Does it keep running if I switch tabs?

Yes, the stopwatch continues to run in the background when you navigate away from the tab.