Online Stopwatch

Time an activity with start, pause, reset, and individual lap splits.

00:00:00
elapsed time

Timing stays in this tab. Save the lap log before closing.

How to use online stopwatch

  1. Start the stopwatch
  2. Record laps or pause and resume
  3. Download a lap log or reset for another activity

Worked example

Laps at 00:30 and 01:10

Splits of 30 seconds and 40 seconds

How the result is calculated

Elapsed time uses the browser’s monotonic clock rather than adding interval ticks. Display updates may slow in a background tab, but elapsed time is recomputed when the tab returns.

Inputs stay in your browser. You can use this tool without joining the waitlist or creating an account.

From a calculation to a daily glance

Keep elapsed time in view.

Create a stopwatch in the app and assign it to Stopwatch 1 or 2 for Lock Screen access. This browser stopwatch does not sync into the app.

  1. 1Create or select your stopwatch in the app.
  2. 2Choose its widget assignment or a matching style.
  3. 3Add the corresponding Lock Screen widget.
Get early accessExplore widget designs

Web results do not automatically sync to the app. Setup is manual; calendar events appear through your enabled calendars.

Stopwatch 1 native iPhone preview
Stopwatch widget · example design from the app

Frequently asked questions

How does this online stopwatch work?
Elapsed time uses the browser’s monotonic clock rather than adding interval ticks. Display updates may slow in a background tab, but elapsed time is recomputed when the tab returns.
How can I use the result with Monthly Calendar Widgets?
Create a stopwatch in the app and assign it to Stopwatch 1 or 2 for Lock Screen access. This browser stopwatch does not sync into the app.
Do I need an account to use this tool?
No. The tool works in your browser without an account. Your inputs are not sent to our servers. Downloaded files stay on your device.

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