Online Stopwatch with Lap Timer

How to Use the Online Stopwatch

Using our free online stopwatch is simple and intuitive. Click the Start button to begin timing, and click Stop to pause the timer. The Lap button records split times while the stopwatch is running, allowing you to track multiple intervals without stopping. Use Reset to clear the timer and start fresh. For a distraction-free experience, activate Fullscreen mode.

Key Features

• Millisecond Precision — Accurate to 0.01 seconds for precise timing
• Lap Tracking — Record lap times and view split durations instantly
• Performance Highlights — Fastest and slowest laps are color-coded for quick reference
• Average Lap Time — Automatically calculated across all recorded laps
• Export Options — Copy laps to clipboard or download as CSV file
• Fullscreen Mode — Immersive, distraction-free timer display
• Keyboard Shortcuts — Control the stopwatch hands-free with Space, L, R, and F keys
• Live Tab Title — Current elapsed time displays in your browser tab
• Session History — Automatically saves your last 5 timing sessions
• Mobile Friendly — Works on all devices with responsive design

Common Use Cases

The online stopwatch is perfect for fitness training, cooking, studying with timed intervals, workout routines, race timing, productivity sprints (Pomodoro), exercise routines, language learning sessions, and any activity requiring precise timing. Whether you're timing your morning run, tracking workout sets, or monitoring study intervals, our stopwatch provides reliable, accurate timing.

Keyboard Shortcuts

• Space — Toggle start and stop
• L — Record a lap time
• R — Reset the timer
• F — Toggle fullscreen mode

Frequently Asked Questions

Is this stopwatch accurate?

Yes, our stopwatch uses your browser's high-resolution timer (performance.now()) for millisecond-level accuracy. While not suitable for official competition timing, it's accurate enough for training, fitness, and everyday use.

Can I save my sessions?

Absolutely! Your stopwatch automatically saves the last 5 sessions in your browser's local storage. You can view them in the "Recent Sessions" section. Sessions are saved locally on your device and are never sent to any server.

How do I export my lap times?

Click the Copy button to copy all lap times to your clipboard, or use CSV to download a comma-separated file that you can open in Excel or Google Sheets for further analysis.

Does fullscreen mode work on mobile?

Yes! Fullscreen mode works on both desktop and mobile browsers. On mobile, it will expand the timer to use the entire screen, providing a clean, distraction-free experience.

What happens to my data when I close the browser?

Your recent sessions are stored locally on your device and will persist even after closing the browser. They remain in your browser's storage until you manually clear your browser cache or use the reset functions.