User Guide & Keyboard Shortcuts
Welcome to the online stopwatch guide. This tool is designed to measure time with millisecond precision using the high-performance browser performance.now() API.
Keyboard Shortcuts
Control the stopwatch without touching your mouse for instant response:
| Keyboard Key | Action |
|---|---|
| Space | Start or Pause the timer |
| L | Record a split time (Lap) while running |
| R | Reset the stopwatch to 0 |
How to Record & Copy Laps
Click the Lap button or press the L key while the timer is running to capture intervals. You can copy the entire record history to your clipboard at any time by clicking "Copy Records".