Frequently Asked Questions
How accurate is this online stopwatch? +
This stopwatch uses JavaScript's performance.now() for millisecond accuracy. Most modern browsers support sub-millisecond timing. The display shows hours, minutes, seconds, and milliseconds.
Does the stopwatch work in the background? +
Most browsers reduce timer accuracy for background tabs. For best precision, keep the tab in the foreground. Timing continues but may drift slightly when the tab is hidden.
How many laps can I record? +
No practical limit. The lap list grows dynamically and scrolls. Each lap records the individual lap time and cumulative time.
Can I use the stopwatch on my phone? +
Yes, fully responsive and works on all modern smartphones and tablets. Large display and touch-friendly buttons. Works offline once loaded.
What is a lap timer? +
A lap timer records intermediate times without stopping the main clock. Press 'Lap' to save the current time while the stopwatch continues running. Each lap shows both individual and cumulative time.
Does this stopwatch work offline? +
Yes, completely offline once loaded. No internet connection needed, no server calls, no data sent anywhere.
How do I reset the stopwatch? +
Click the 'Reset' button (appears after running or pausing). This clears the time to zero and removes all lap records.
Can I export my lap times? +
Lap times are displayed on screen and can be manually selected and copied. Future updates may add CSV export functionality.