Stopwatch

Online stopwatch with laps, accurate to a hundredth of a second. Start, stop, lap, reset. Works offline on any device.

00:00.00

Runs on your device. Nothing is sent to a server.

How it works

Press Start. Lap records the current time and the split since the previous lap. Stop pauses, Resume continues, Reset clears everything.

Timing is based on the system clock, so it stays correct even if the browser throttles the tab.

How accurate is it?

Display updates about 60 times a second and the elapsed time comes from the system clock, so accuracy is within a few milliseconds.