Online Stopwatch - Free Lap Timer

About the Online Stopwatch

Our online stopwatch provides a simple yet powerful way to measure elapsed time with millisecond precision. Whether you are timing a workout interval, tracking how long a recipe takes, monitoring study sessions, or measuring any timed activity, this stopwatch delivers accurate results with an easy-to-use interface.

The lap timer feature allows you to record split times without interrupting the main timer. This is especially useful for athletes tracking pace during runs, swimmers recording split times, or anyone who needs to mark intervals during a timed activity. Each lap shows both its individual duration and the total elapsed time.

Unlike physical stopwatches, this digital version is always available on any device with a web browser. No batteries to replace, no buttons to wear out. It uses your device's high-resolution timer for accuracy that meets or exceeds most consumer-grade physical stopwatches.

How to Use the Stopwatch

1. Click the green "Start" button to begin timing. The display will show minutes, seconds, and milliseconds.
2. Click "Lap" at any point while running to record a lap time. The lap will appear in the list below with its duration.
3. Click "Pause" to temporarily stop the timer. The elapsed time is preserved and you can resume by clicking Start again.
4. Click "Reset" to clear the timer and all recorded laps, returning to 00:00:00.000.
5. Review your lap times in the list below the main display, showing each lap's split and cumulative time.