Everything you need to know about this tool and how to get the most out of it.
What is Stopwatch?
The Stopwatch is a precise online timing tool with lap tracking functionality. It measures elapsed time to the centisecond, making it ideal for sports, workouts, experiments, cooking, and any activity where accurate time measurement matters.
How Stopwatch Works
The stopwatch uses JavaScript's high-resolution timer to track elapsed time in 10ms intervals. When you press Start, the timer begins counting. Use the Lap button to record split times without stopping the main timer. The Reset button clears all times and laps.
Why Use Stopwatch?
Unlike a physical stopwatch, this tool runs in your browser with no app installation required. It's accessible from any device, supports unlimited laps, and displays both cumulative and split times for each lap — perfect for tracking performance improvements.
Tips & Best Practices
- 1Click the Lap button while running to record split times without stopping
- 2Each lap shows both the cumulative time and the individual split time
- 3The stopwatch continues running even if you switch browser tabs
- 4Use keyboard shortcuts: Space to start/stop, L for lap, R to reset
- 5For sports timing, record multiple laps to compare performance across rounds
