Free online stopwatch with lap times, millisecond precision, and easy controls.
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Why use an online stopwatch?
Perfect for timing experiments, exercises, cooking, presentations, and any activity requiring precise time tracking.
Frequently Asked Questions
How accurate is the stopwatch?
Our stopwatch uses high-precision JavaScript timing APIs, accurate to milliseconds. It's suitable for general timing needs, though professional sports timing may require specialized hardware.
What are lap times?
Lap times record split times without stopping the main timer. Click 'Lap' to mark a point in time while the stopwatch continues running. Perfect for tracking intervals or segment times.
Will the stopwatch keep running if I close the browser?
No, the stopwatch runs in your browser and will stop if you close the tab or browser. For long timing sessions, keep the tab open and ensure your device doesn't sleep.
Can I export my lap times?
Yes! You can copy all lap times to clipboard or download them as a CSV file. This is useful for keeping records of your timing sessions.
Does the stopwatch work offline?
Yes, once loaded, the stopwatch works completely offline. All timing happens locally in your browser without any server communication.