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Advanced Stopwatch

Free advanced online stopwatch with lap timer, countdown, and split time features. Perfect for workouts, study sessions, productivity, and sports timing.

How to Use This Stopwatch

Our advanced stopwatch offers multiple timing modes and features to help you track time accurately for any activity. Follow these steps to make the most of our tool:

1 Choose Mode

Select between Stopwatch mode for counting up from zero, or Countdown Timer mode for counting down from a set time.

2 Set Countdown (if needed)

If using Countdown Timer, enter the hours, minutes, and seconds you want to count down from, then click "Start Timer".

3 Use Timing Controls

Start, pause, and reset the timer as needed. Use Lap and Split functions to record intermediate times during your activity.

4 Review Results

View all recorded lap and split times in the results section. Clear them when starting a new timing session.

00:00:00.00

Lap & Split Times

No times recorded yet. Press "Lap" or "Split" to record times.

Advanced Features

Our stopwatch goes beyond basic timing with these powerful features:

Lap Timing

Record intermediate times while the stopwatch continues running. Perfect for tracking segments of a race or workout.

Split Timing

Measure elapsed time at specific points while the timer continues. Great for comparing performance across intervals.

Countdown Timer

Set a specific time to count down from, with visual and audio alerts when time expires.

Time History

View all your recorded lap and split times in an organized list for easy analysis.

Common Use Cases

Our stopwatch is versatile enough for many timing needs:

Workout Intervals
Study Sessions
Cooking & Baking
Sports Training
Presentation Timing
Game Time Limits
Productivity Tracking
Scientific Experiments

Pro Tip

Use the Lap function for interval training to track each segment separately while maintaining the overall time. Use Split timing to compare your current pace against previous segments.

Lap vs Split: What's the Difference?

Lap Timing

Lap timing records the time at the moment you press the button, then continues timing from that point. Each lap time shows the duration of that specific segment.

Split Timing

Split timing records the elapsed time at specific points while the overall timer continues running. Each split shows the total time elapsed up to that point.

When to Use Each

Use Lap timing when you want to measure individual segments independently. Use Split timing when you want to compare your current progress against earlier checkpoints in the same activity.

Frequently Asked Questions

Does the stopwatch work when I switch browser tabs?

Yes, our stopwatch continues running accurately even when you switch to other browser tabs or applications. The timer uses your browser's high-precision timing API to maintain accuracy.

Can I save my timing results?

While the stopwatch doesn't have a built-in save feature, you can easily copy your lap and split times by selecting the text in the results section and pasting it into any document or note-taking app.

Is there a sound when the countdown timer finishes?

Yes, the countdown timer will play an alert sound when it reaches zero. Make sure your device volume is turned up to hear the notification.

What's the maximum time the stopwatch can record?

The stopwatch can record up to 99 hours, 59 minutes, and 59.99 seconds, which should be sufficient for virtually all timing needs.

Does this work on mobile devices?

Yes, our stopwatch is fully responsive and works perfectly on smartphones and tablets. The large buttons are designed for easy touch control on mobile screens.