Online Stopwatch: Precise Timer with Lap Times
A free, accurate online stopwatch with millisecond precision, lap time recording, and full-screen mode. Perfect for timing sports activities, cooking, workouts, presentations, and exams.
How to Use the Stopwatch
- Click the Play button to start the stopwatch.
- Use the Flag button to record lap times without stopping the timer.
- Click the Pause button to stop the stopwatch.
- Use the Reset button to clear the timer and all lap times.
- Click the Expand icon in the top-right corner for full-screen mode.
Features
Millisecond Precision
Our stopwatch provides millisecond-level accuracy for precise timing of events and activities.
Lap Time Recording
Record multiple lap times without stopping the main timer, perfect for tracking intervals or segments.
Full-Screen Mode
Expand the stopwatch to fill your entire screen for better visibility during presentations or group activities.
No Downloads Required
Works entirely in your browser with no apps, downloads, or installations needed.
Common Uses for a Stopwatch
Sports & Fitness
- Time running laps or sprints
- Track workout intervals
- Measure swimming splits
- Time sports drills and exercises
Education & Work
- Time exams and tests
- Track presentation durations
- Measure task completion times
- Time brainstorming sessions
Everyday Activities
- Time cooking and baking
- Track meditation sessions
- Measure game turns or rounds
- Time household chores
Related Time Tools
Frequently Asked Questions
How accurate is this online stopwatch?
Our stopwatch provides millisecond-level precision, though the actual accuracy may vary slightly depending on your device's performance and browser. For most everyday timing needs, it's more than accurate enough.
Will the stopwatch continue if I switch to another tab?
Yes, the stopwatch will continue running even if you switch to another browser tab or minimize your browser. However, for the most accurate timing, we recommend keeping the stopwatch tab active.
Is there a limit to how many lap times I can record?
There's no set limit to the number of lap times you can record, though extremely large numbers of laps may affect performance on some devices.
Does this stopwatch work on mobile devices?
Yes, our stopwatch is fully responsive and works on smartphones and tablets as well as desktop computers.
Explore More Time Management Tools
World Clock
Track time across multiple time zones for international coordination.
Pomodoro Timer
Enhance productivity with structured work and break intervals.
Countdown Timer
Set timers for events, deadlines, and important reminders.
Time Zone Converter
Convert times between different time zones easily.