Online Stopwatch

Time anything to the hundredth of a second, with laps.

Loading Stopwatch…

How to use Stopwatch

  1. Press Start or the Space bar.
  2. Press Lap (or L) at each split.
  3. Press Stop to pause; press it again to resume.
  4. Copy the laps as text, or press Reset (or R) to start over.

About Stopwatch

A stopwatch that times to the hundredth of a second. Start, stop and resume as often as you like; paused time is never counted. Past 60 minutes the display adds hours.

Press Lap to record splits. The laps table lists each lap's time and the running total, marks the fastest and slowest laps, and copies to plain text in one click. Keyboard shortcuts keep your hands free: Space starts and stops, L records a lap and R resets.

What people use it for

Frequently asked questions

How accurate is this stopwatch?

It reads the browser's high resolution clock and shows hundredths of a second. Stopping and resuming are exact, since elapsed time is added up from the clock rather than counted in steps.

Does it keep timing in a background tab?

Yes. The display may pause while the tab is hidden, but the time is read from the clock, so it is correct the moment you come back.

How do I save my lap times?

Press Copy laps to copy a plain text table (lap, lap time, total, with the fastest and slowest marked) and paste it anywhere.

Is it private?

Every calculation happens on this page, in your own browser. Your input is never sent to a server and never logged, which also means the tool keeps working when you are offline.

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