Stopwatch - Free Online Stopwatch with Lap Timer

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⏱️ Precise Timing

Accurate to 10 milliseconds. Use the lap button to record split times while the timer continues running. Perfect for sports, workouts, or any timing task.

How to use the online stopwatch

Start, lap, stop — three buttons, nothing to configure.

01
Click Start
Hit Start to begin timing. The stopwatch counts up in hours, minutes, seconds, and milliseconds.
02
Record laps
Click Lap to record a split time without stopping the stopwatch. Each lap is listed below with its split and cumulative time.
03
Stop and reset
Click Stop to pause, then Reset to clear all times and start fresh.

Frequently asked questions

Free, no account needed.

Accurate to 10 milliseconds. Browser-based timers are subject to small variations from JavaScript's event loop, but precise enough for sports, cooking, and most everyday timing.

Yes. Once the page is loaded, the stopwatch works without an internet connection.

The timer keeps running in the background. Modern browsers may throttle background tabs slightly, which can cause minor drift over very long periods.

There's no built-in export, but you can screenshot or manually copy the lap list from the screen.

Yes, in any modern mobile browser.

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