⏱️ Online Stopwatch
A precision online stopwatch with lap timer functionality. Track split times for sports, workouts, experiments, or any activity. Millisecond accuracy, keyboard shortcuts, and works offline.
Keyboard Shortcuts
Space — Start / Pause / Resume L — Record Lap
Frequently Asked Questions
The stopwatch uses high-resolution timing (performance.now) for millisecond accuracy. Actual precision depends on your device and browser.
Yes! Click the Lap button or press L while the stopwatch is running to record split times. Best and worst laps are automatically highlighted.
Once the page is loaded, the stopwatch works entirely offline since all timing is handled by JavaScript in your browser.
Click the Reset button to stop the stopwatch and clear all recorded lap times. You can also press the Space bar to start/stop.