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Stopwatch & Timer

An accurate online stopwatch with lap times, plus a countdown timer with an alarm. Keeps time even when the tab is in the background.

No uploads
Stopwatch
00:00.00
Countdown timer
: :

How to use Stopwatch & Timer

  1. 1Open Stopwatch & Timer. It runs in your browser, no sign-up.
  2. 2Type or paste your input.
  3. 3Copy or download the result.

Questions

How accurate is it?

It reads the system clock on every frame, so it stays accurate to the millisecond even if the tab is in the background.

Will the timer ring if I switch tabs?

Yes, as long as this tab stays open and your sound is on.

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