Online stopwatch with laps

Measure elapsed time, pause and resume, record up to 100 laps and download them as CSV. Free, private and ready in one click.

00:00:00.00

Ready when you are

Keep this page open. Browsers may suspend background tabs; sound is not guaranteed when locked or closed. Reloading clears the timer.

Free, no account. Your inputs stay in this tab and are not sent to a server.

Preparing your tool…

How it works

Elapsed time uses a monotonic clock rather than counting animation frames. Each lap records the interval since the previous lap and total elapsed time.

Example

Lap at 10 seconds, then at 25 seconds: lap intervals are 10 and 15 seconds, while elapsed totals are 10 and 25 seconds.

Are laps saved when I leave?

No. Download the CSV before leaving or resetting. The display is a browser stopwatch, not certified timing equipment. Sleep behavior can depend on the browser and operating system.